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PIC16F15376 Curiosity Nano PIC16F15376 Curiosity Nano Hardware User Guide
Preface
The PIC16F15376 Curiosity Nano Evaluation Kit is a hardware platform to evaluate the PIC16F15376microcontroller.
Supported by Microchip MPLAB® X Integrated Development Environment (IDE), the kit provides easyaccess to the features of the PIC16F15376 to explore how to integrate the device into a custom design.
The Curiosity Nano series of evaluation kits include an on-board debugger. No external tools arenecessary to program and debug the PIC16F15376.
© 2019 Microchip Technology Inc. User Guide 50002900A-page 1
Table of Contents
Preface............................................................................................................................ 1
1. Introduction................................................................................................................41.1. Features....................................................................................................................................... 41.2. Kit Overview................................................................................................................................. 4
2. Getting Started.......................................................................................................... 52.1. Curiosity Nano Quick Start...........................................................................................................52.2. Design Documentation and Relevant Links................................................................................. 5
3. Curiosity Nano........................................................................................................... 63.1. On-board Debugger..................................................................................................................... 6
3.1.1. Virtual COM Port............................................................................................................63.1.1.1. Overview..................................................................................................... 63.1.1.2. Limitations................................................................................................... 73.1.1.3. Signaling......................................................................................................73.1.1.4. Advanced Use.............................................................................................7
3.1.2. Mass Storage Disk.........................................................................................................83.1.2.1. Mass Storage Device.................................................................................. 83.1.2.2. Configuration Words....................................................................................9
3.2. Curiosity Nano Standard Pinout...................................................................................................93.3. Power Supply............................................................................................................................. 10
3.3.1. Target Regulator.......................................................................................................... 103.3.2. External Supply............................................................................................................113.3.3. VBUS Output Pin......................................................................................................... 11
3.4. Target Current Measurement..................................................................................................... 123.5. Disconnecting the On-Board Debugger..................................................................................... 13
4. Hardware User Guide..............................................................................................154.1. Connectors.................................................................................................................................15
4.1.1. PIC16F15376 Curiosity Nano Pinout...........................................................................154.1.2. Using Pin Headers.......................................................................................................15
4.2. Peripherals................................................................................................................................. 164.2.1. LED..............................................................................................................................164.2.2. Mechanical Switch.......................................................................................................164.2.3. Crystal..........................................................................................................................164.2.4. On-Board Debugger Implementation...........................................................................17
4.2.4.1. On-Board Debugger Connections............................................................. 17
5. Hardware Revision History and Known Issues........................................................185.1. Identifying Product ID and Revision........................................................................................... 185.2. Revision 2...................................................................................................................................185.3. Revision 1...................................................................................................................................18
6. Document Revision History..................................................................................... 20
PIC16F15376 Curiosity Nano
© 2019 Microchip Technology Inc. User Guide 50002900A-page 2
7. Appendix..................................................................................................................217.1. Schematic...................................................................................................................................217.2. Assembly Drawing......................................................................................................................237.3. Curiosity Nano Base for Click boards™...................................................................................... 247.4. Connecting External Debuggers................................................................................................ 25
The Microchip Website..................................................................................................27
Product Change Notification Service.............................................................................27
Customer Support......................................................................................................... 27
Microchip Devices Code Protection Feature................................................................. 27
Legal Notice...................................................................................................................28
Trademarks................................................................................................................... 28
Quality Management System........................................................................................ 29
Worldwide Sales and Service........................................................................................30
PIC16F15376 Curiosity Nano
© 2019 Microchip Technology Inc. User Guide 50002900A-page 3
1. Introduction
1.1 Features• PIC16F15376-I/MV Microcontroller• One Yellow User LED• One Mechanical User Switch• Footprint for 32.768 kHz Crystal• On-Board Debugger:
– Board identification in Microchip MPLAB® X– One green power and status LED– Programming and debugging– Virtual COM port (CDC)– One logic analyzer channel (DGI GPIO)
• USB Powered• Adjustable Target Voltage:
– MIC5353 LDO regulator controlled by the on-board debugger– 2.3-5.1V output voltage (limited by USB input voltage)– 500 mA maximum output current (limited by ambient temperature and output voltage)
1.2 Kit OverviewThe Microchip PIC16F15376 Curiosity Nano Evaluation Kit is a hardware platform to evaluate thePIC16F15376 microcontroller.
Figure 1-1. PIC16F15376 Curiosity Nano Evaluation Kit Overview
PIC16F15376 Curiosity NanoIntroduction
© 2019 Microchip Technology Inc. User Guide 50002900A-page 4
2. Getting Started
2.1 Curiosity Nano Quick StartSteps to start exploring the Curiosity Nano platform:
1. Download Microchip MPLAB® X.2. Launch Microchip MPLAB® X.3. Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the debug USB
port on the kit.
When the Curiosity Nano kit is connected to your computer for the first time, the operating system willperform a driver software installation. The driver file supports both 32- and 64-bit versions of Microsoft®Windows® XP, Windows Vista®, Windows 7, Windows 8, and Windows 10. The drivers for the kit areincluded with Microchip MPLAB® X.
Once the Curiosity Nano board is powered the green status LED will be lit and Microchip MPLAB® X willauto-detect which Curiosity Nano board is connected. Microchip MPLAB® X will present relevantinformation like data sheets and kit documentation. The PIC16F15376 device is programmed anddebugged by the on-board debugger and therefore no external programmer or debugger tool is required.
2.2 Design Documentation and Relevant LinksThe following list contains links to the most relevant documents and software for the PIC16F15376Curiosity Nano.
• MPLAB® X IDE - MPLAB® X IDE is a software program that runs on a PC (Windows®, Mac OS®,Linux®) to develop applications for Microchip microcontrollers and digital signal controllers. It is calledan Integrated Development Environment (IDE) because it provides a single integrated “environment”to develop code for embedded microcontrollers.
• MPLAB® Code Configurator - MPLAB® Code Configurator (MCC) is a free software plug-in thatprovides a graphical interface to configure peripherals and functions specific to your application.
• Microchip Sample Store - Microchip sample store where you can order samples of devices.• Data Visualizer - Data Visualizer is a program used for processing and visualizing data. The Data
Visualizer can receive data from various sources such as the EDBG Data Gateway Interface foundon Curiosity Nano and Xplained Pro boards and COM Ports.
• PIC16F15376 Curiosity Nano website - Kit information, latest user guide and designdocumentation.
• PIC16F15376 Curiosity Nano on microchipDIRECT - Purchase this kit on microchipDIRECT.
PIC16F15376 Curiosity NanoGetting Started
© 2019 Microchip Technology Inc. User Guide 50002900A-page 5
https://www.microchip.com/mplab/mplab-x-idehttps://www.microchip.com/mplab/mplab-code-configuratorhttps://www.microchip.com/samples/default.aspxhttps://www.microchip.com/mplab/avr-support/data-visualizerhttp://www.microchip.com/DevelopmentTools/ProductDetails.aspx?PartNO=DM164148http://www.microchipdirect.com/ProductSearch.aspx?Keywords=DM164148
3. Curiosity NanoCuriosity Nano is an evaluation platform of small boards with access to most of the microcontrollers I/Os.The platform consists of a series of low pin-count microcontroller (MCU) boards with on-board debuggers,which are integrated with Microchip MPLAB® X. Each board is identified in the IDE, and relevant userguides, application notes, data sheets, and example code are easy to find. The on-board debuggerfeatures a Virtual COM port (CDC) for serial communication to a host PC, and a Data Gateway Interface(DGI) GPIO logic analyzer pin.
3.1 On-board DebuggerThe PIC16F15376 Curiosity Nano contains an on-board debugger for programming and debugging. Theon-board debugger is a composite USB device of several interfaces: A debugger, a mass storage device,a data gateway, and a Virtual COM port (CDC).
Together with Microchip MPLAB® X, the on-board debugger can program and debug the PIC16F15376.
A Data Gateway Interface (DGI) is available for use with the logic analyzer channels for codeinstrumentation, to visualize the program flow. DGI GPIOs can be graphed using the Data Visualizer.
The Virtual COM port is connected to a UART on the PIC16F15376 and provides an easy way tocommunicate with the target application through terminal software.
The on-board debugger controls a Power and Status LED (marked PS) on the PIC16F15376 CuriosityNano. The table below shows how the LED is controlled in different operation modes.
Table 3-1. On-Board Debugger LED Control
Operation Mode Status LED
Boot Loader mode LED blink at 1 Hz during power-up.
Power-up LED is ON.
Normal operation LED is ON.
Programming Activity indicator: The LED flashes slowly during programming/debugging.
Fault The LED flashes fast if a power fault is detected.
Sleep/Off LED is off. The on-board debugger is either in Sleep mode or powered down.This can occur if the kit is externally powered.
3.1.1 Virtual COM PortThe Virtual COM Port is a general purpose serial bridge between a host PC and a target device.
3.1.1.1 OverviewThe on-board debugger implements a composite USB device that includes a standard CommunicationsDevice Class (CDC) interface, which appears on the host as a Virtual COM Port. The CDC can be usedto stream arbitrary data in both directions between the host and the target: All characters sent from thehost will be sent through a UART on the CDC TX pin, and UART characters sent into the CDC RX pin willbe sent back to the host through the Virtual COM Port.
On Windows machines, the CDC will enumerate as Curiosity Virtual COM Port and appear in the Portssection of the device manager. The COM port number is shown here.
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https://www.microchip.com/mplab/avr-support/data-visualizer
On Linux machines, the CDC will enumerate and appear as /dev/ttyACM#.On MAC machines, the CDC will enumerate and appear as /dev/tty.usbmodem#. Depending onwhich terminal program is used, it will appear in the available list of modems as usbmodem#.
Info: On older Windows systems, a USB driver is required for CDC. This driver is included inMPLAB X and Atmel® Studio installations.
3.1.1.2 LimitationsNot all UART features are implemented in the on-board debugger CDC. The constraints are outlinedhere:
• Baud rate must be in the range 1200 bps to 500 kbps. Any baud rate outside this range will be set tothe closest limit, without warning. Baud rate can be changed on-the-fly.
• Character format: Only 8-bit characters are supported.• Parity: Can be odd, even, or none.• Hardware flow control: Not supported.• Stop bits: One or two bits are supported.
3.1.1.3 SignalingDuring USB enumeration, the host OS will start both communication and data pipes of the CDC interface.At this point, it is possible to set and read back the baud rate and other UART parameters of the CDC, butdata sending and receiving will not be enabled.
When a terminal connects on the host, it must assert the DTR signal. This is a virtual control signalimplemented on the USB interface, but not in hardware in the on-board debugger. Asserting DTR fromthe host will indicate to the on-board debugger that a CDC session is active, will enable its level shifters(if available) and start the CDC data send and receive mechanisms.
Deasserting the DTR signal will not disable the level shifters but disable the receiver so no further datawill be streamed to the host. Data packets that are already queued up for sending to the target willcontinue to be sent out, but no further data will be accepted.
Remember: Enable to set up your terminal emulator to assert the DTR signal. Without it, theon-board debugger will not send or receive any data through its UART.
3.1.1.4 Advanced Use
CDC Override ModeIn normal operation, the on-board debugger is a true UART bridge between the host and the device.However, under certain use cases, the on-board debugger can override the basic operating mode anduse the CDC pins for other purposes.
Dropping a text file (with extension .txt) into the on-board debugger’s mass storage drive can be usedto send characters out of the CDC TX pin. The text file must start with the characters:CMD:SEND_UART=
The maximum message length is 50 characters - all remaining data in the frame are ignored.
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The default baud rate used in this mode is 9600 bps, but if the CDC is already active or has beenconfigured, the baud rate last used still applies.
USB-Level Framing ConsiderationsSending data from the host to the CDC can be done byte-wise or in blocks, which will be chunked into 64-byte USB frames. Each such frame will be queued up for sending to the CDC TX pin. Transferring a smallamount of data per frame can be inefficient, particularly at low baud rates, since the on-board debuggerbuffers frames and not bytes. A maximum of 4 x 64-byte frames can be active at any time. The on-boarddebugger will throttle the incoming frames accordingly. Sending full 64-byte frames containing data is themost efficient.
When receiving data from the target, the on-board debugger will queue up the incoming bytes into 64-byte frames, which are sent to the USB queue for transmission to the host when they are full. Incompleteframes are also pushed to the USB queue at approximately 100 ms intervals, triggered by USB start-of-frame tokens. Up to 8 x 64-byte frames can be active at any time.
If the host, or the software running on it, fails to receive data fast enough, an overrun will occur. When thishappens, the last-filled buffer frame will be recycled instead of being sent to the USB queue, and a fullframe of data will be lost. To prevent this occurrence, the user must ensure that the CDC data pipe isbeing read continuously, or the incoming data rate must be reduced.
3.1.2 Mass Storage DiskA simple way to program the target device is through drag and drop with .hex files.
3.1.2.1 Mass Storage DeviceThe on-board debugger implements a highly optimized variant of the FAT12 file system that has a numberof limitations, partly due to the nature of FAT12 itself and optimizations made to fulfill its purpose for itsembedded application.
The CURIOSITY drive is USB Chapter 9 compliant as a mass storage device but does not, in any way,fulfill the expectations of a general purpose mass storage device. This behavior is intentional.
The on-board debugger enumerates as a Curiosity Nano USB device that can be found in the disk drivessection of the Windows device manager. The CURIOSITY drive appears in the file manager and claimsthe next available drive letter in the system.
The CURIOSITY drive contains approximately one MB of free space. This does not reflect the size of thetarget device’s Flash in any way. When programming a .hex file, the binary data are encoded in ASCIIwith metadata providing a large overhead, so one MB is a trivially chosen value for disk size.
It is not possible to format the CURIOSITY drive. When programming a file to the target, the filename mayappear in the disk directory listing. This is merely the operating system’s view of the directory, which, inreality, has not been updated. It is not possible to read out the file contents. Removing and replugging thekit will return the file system to its original state, but the target will still contain the application that hasbeen previously programmed.
To erase the target device, copy a text file starting with “CMD:ERASE” onto the disk.
By default, the CURIOSITY drive contains several read-only files for generating icons as well as reportingstatus and linking to further information:
• AUTORUN.ICO - icon file for the Microchip logo.• AUTORUN.INF - system file required for Windows Explorer to show the icon file.• KIT-INFO.HTM - redirect to the development board website.
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• KIT-INFO.TXT - a text file containing details about the kit firmware, name, serial number, anddevice.
• STATUS.TXT - a text file containing the programming status of the board.
Info: STATUS.TXT is dynamically updated by the on-board debugger, the contents may becached by the OS and therefore not reflect the correct status.
3.1.2.2 Configuration Words
Configuration Words (PIC® MCU Targets)Configuration Word settings included in the project being programmed after program Flash isprogrammed. The debugger will not mask out any bits in the Configuration Words when writing them, butsince it uses Low-Voltage Programming mode, it is unable to clear the LVP Configuration bit. If theincorrect clock source is selected, for example, and the board does not boot, it is always possible toperform a bulk erase (always done before programming) and restore the device to its default settings.
3.2 Curiosity Nano Standard PinoutThe twelve edge connections closest to the USB connector on Curiosity Nano kits have a standardizedpinout. The program/debug pins have different functions depending on the target programming interfaceas shown in the table and figure below.
Table 3-2. Curiosity Nano Standard Pinout
Debugger Signal ICSPTM Target Description
ID - ID line for extensions.
CDC TX UART RX USB CDC TX line.
CDC RX UART TX USB CDC RX line.
DBG0 ICSPDAT Debug data line.
DBG1 ICSPCLK Debug clock line/DGI GPIO.
DBG2 GPIO0 DGI GPIO.
DBG3 MCLR Reset line.
NC - No connect.
VBUS - VBUS voltage for external use.
VOFF - Voltage Off input.
VTG - Target voltage.
GND - Common ground.
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Figure 3-1. Curiosity Nano Standard Pinout
USB
DEBUGGER
PS LEDNC
NC
ID
ID
CDC RX
CDCRX
CDC TX
CDCTX
DBG1
DBG
1
DBG2
DBG
2
VBUS
VBU
S
VOFF
VO
FF
DBG3
DBG
3
DBG0
DBG
0
GND
GN
D
VTG
VTGCURIOSITY NANO
3.3 Power SupplyThe kit is powered through the USB port and contains two LDO regulators, one to generate 3.3V for theon-board debugger, and an adjustable LDO regulator for the target microcontroller PIC16F15376 and itsperipherals. The voltage from the USB connector can vary between 4.4V to 5.25V (according to the USBspecification) and will limit the maximum voltage to the target. The figure below shows the entire powersupply system on PIC16F15376 Curiosity Nano.
Figure 3-2. Power Supply Block Diagram
USBTarget MCU
Power source
Cut strap
Power consumer P3V3 DEBUGGERPower converter
DEBUGGERRegulator
VUSB
TargetRegulator
Power Supply strap
Adjust
Level shifter
VLVLVREG
I/O I/O GPIOstraps
I/O
On/OffMeasure On/Off
ID system#VOFF
PTC Fuse
Power protection
VBUS
Target Power strap
VTG
3.3.1 Target RegulatorThe target voltage regulator is a MIC5353 variable output LDO. The on-board debugger can adjust thevoltage output supplied to the kit target section by manipulating the MIC5353’s feedback voltage. Thehardware implementation is limited to an approximate voltage range from 1.7V to 5.1V. Additional outputvoltage limits are configured in the debugger firmware to ensure that the output voltage never exceedsthe hardware limits of the PIC16F15376 microcontroller. The voltage limits configured in the on-boarddebugger on PIC16F15376 Curiosity Nano are 2.3-5.1V.
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Info: The target voltage is set to 3.3V in production. It can be changed through MPLAB Xproject properties. Any change to the target voltage is persistent, even through a power toggle.
The MIC5353 supports a maximum current load of 500 mA. It is an LDO regulator in a small package,placed on a small PCB, and the thermal shutdown condition can be reached at lower loads than 500 mA.The maximum current load depends on the input voltage, the selected output voltage, and the ambienttemperature. The figure below shows the safe operating area for the regulator, with an input voltage of5.1V and an ambient temperature of 23°C.
Figure 3-3. Target Regulator Safe Operation Area
3.3.2 External SupplyPIC16F15376 Curiosity Nano can be powered by an external voltage instead of the on-board targetregulator. When the Voltage Off (VOFF) pin is shorted to ground (GND) the on-board debugger firmwaredisables the target regulator, and it is safe to apply an external voltage to the VTG pin.
WARNING Applying an external voltage to the VTG pin without shorting VOFF to GND may causepermanent damage to the kit.
WARNING Absolute maximum external voltage is 5.5V for the on-board level shifters, and the standardoperating condition of the PIC16F15376 is 2.3-5.5V. Applying a higher voltage may causepermanent damage to the kit.
Programming, debugging, and data streaming is still possible with an external power supply: Thedebugger and signal level shifters will be powered from the USB cable. Both regulators, the debugger,and the level shifters are powered down when the USB cable is removed.
3.3.3 VBUS Output PinPIC16F15376 Curiosity Nano has a VBUS output pin which can be used to power external componentsthat need a 5V supply. The VBUS output pin has a PTC fuse to protect the USB against short circuits. A
PIC16F15376 Curiosity NanoCuriosity Nano
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side effect of the PTC fuse is a voltage drop on the VBUS output with higher current loads. The chartbelow shows the voltage versus the current load of the VBUS output.
Figure 3-4. VBUS Output Voltage vs. Current
3.4 Target Current MeasurementPower to the PIC16F15376 is connected from the on-board power supply and VTG pin through a 100-milpin header cut Target Power strap marked with “POWER” in silkscreen (J101). To measure the powerconsumption of the PIC16F15376 and other peripherals connected to the board, cut the Target PowerStrap and connect an ammeter over the strap.
Figure 3-5. Target Power Strap
Target Power strap (top side)
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Tip: A 100-mil pin header can be soldered into the Target Power strap (J101) footprint for easyconnection of an ammeter. Once the ammeter is not needed anymore, place a jumper-cap onthe pin header.
Info: The on-board level shifters will draw a small amount of current even when they are not inuse. A maximum of 10 µA can be drawn from the target power net, and an additional 2 µA canbe drawn from each I/O pin connected to a level shifter for a total of 20 µA. Disconnect the on-board debugger and level shifters as described in Section 3.5 Disconnecting the On-BoardDebugger and keep any I/O pin connected to a level shifter in tri-state to prevent leakage.
3.5 Disconnecting the On-Board DebuggerThe block diagram below shows all connections between the debugger and the PIC16F15376microcontroller. The rounded boxes represent connections to the board edge on PIC16F15376 CuriosityNano. The signal names shown in Figure 3-1 are printed in silkscreen on the bottom side of the board.
Figure 3-6. On-Board Debugger Connections to the PIC16F15376
DEB
UG
GER
TARGETLevel-Shift
PA04/PA06PA07PA08PA16PA00PA01
USB
DIR x 5
VCC_P3V3
VBUS
VCC
_LEV
EL
VCC
_TA
RGET
DBG0DBG1DBG2DBG3CDC TXCDC RX
CDC RXCDCTX
DBG3DBG2DBG1DBG0
GPIO straps
LDO
VOFF
LDO
VBUS VTG
VCC_EDGE
Power Supply strap Target Power strap
By cutting the GPIO straps with a sharp tool, as shown in Figure 3-7, all I/Os connected between thedebugger and the PIC16F15376 are completely disconnected. To completely disconnect the targetregulator and level shifter power from the target, cut the Power Supply strap (J100) as shown in Figure3-7.
Info: Cutting the connections to the debugger will disable programming, debugging, datastreaming, and the target power supply. The signals will also be disconnected from the boardedge next to the on-board debugger section.
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Tip: Solder in 0Ω resistors across the footprints or short-circuit them with tin solder toreconnect any cut signals.
Figure 3-7. Kit Modifications
GPIO straps (bottom side) Power Supply strap (top side)
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4. Hardware User Guide
4.1 Connectors
4.1.1 PIC16F15376 Curiosity Nano PinoutAll the PIC16F15376 I/O pins are accessible at the edge connectors on the board. The image belowshows the kit pinout.
Figure 4-1. PIC16F15376 Curiosity Nano Pinout
USB
DEBUGGER
PIC16F15376
SW0
LED0
PS LEDNC
NC
ID
IDCDC RX
CDC RXRD0
CDC TX
CDC TXRD1
DBG1
DBG
1RB6ICSPCLK
DBG2
DBG
2RE2SW0
RC2
RC2TX
RC3
RC3RX
RB2
RB2SDA
RB1
RB1SCL
RC4
RC4MOSI
RC5
RC5MISO
RC6
RC6SCK
RD4
RD4SS
GND
GN
D
RB0
RB0TX
RB3
RB3RX
RB4
RB4
RC7
RC7
RD0
RD0TX
RD1
RD1RX
RD2
RD2
RD3
RD3
GND
GN
D
VBUS
VBU
S
VOFF
VO
FF
DBG3
DBG
3 RE3 MCLR
DBG0
DBG
0 RB7 ICSPDAT
GND
GN
D
VTG
VTG
RA7
RA7 ANA7
RA6
RA6 ANA6
RA5
RA5 ANA5
RA4
RA4 ANA4 PWM
RA3
RA3 ANA3 PWM
RA2
RA2 ANA2
RA1
RA1 ANA1
RA0
RA0 ANA0
GND
GN
D
RD7
RD7
RD6
RD6
RD5
RD5
RB5
RB5
(RC1)
(RC1) SOSCI
(RC0)
(RC0) SOSCO
RE1
RE1
RE0
RE0 LED0
GND
GN
D
PIC16F15376CURIOSITY NANO
Analog
Debug
I2C
SPI
UART
Shared pinout
Peripheral
Port
PWM
Power
Ground
4.1.2 Using Pin HeadersThe edge connector footprint on PIC16F15376 Curiosity Nano has a staggered design where each of theholes is shifted 8 mil (~0.2 mm) off center. The hole shift allows the use of regular 100-mil pin headers onthe kit without soldering. Once the pin headers are firmly in place, they can be used in normalapplications like pin sockets and prototyping boards without any issues.
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Tip: Start at one end of the pin header and gradually insert the header along the length of theboard. Once all the pins are in place, use a flat surface to push them all the way in.
Tip: For applications where the pin headers will be used permanently, it is still recommendedto solder them in place.
Important: Once the pin headers are in place, they are hard to remove by hand. Use a set ofpliers and carefully remove the pin headers to avoid damage to the pin headers and printedcircuit board.
4.2 Peripherals
4.2.1 LEDThere is one yellow user LED available on the PIC16F15376 Curiosity Nano kit that can be controlled byeither GPIO or PWM. The LED can be activated by driving the connected I/O line to GND.
Table 4-1. LED Connection
PIC16F15376 Pin Function Shared Functionality
RE0 Yellow LED0 Edge connector
4.2.2 Mechanical SwitchThe PIC16F15376 Curiosity Nano has one mechanical switch. This is a generic user-configurable switch.When the switch is pressed, it will drive the I/O line to ground (GND).
Tip: There is no externally connected pull-up resistor on the switch. To use the switch, makesure that an internal pull-up resistor is enabled on pin RE2.
Table 4-2. Mechanical Switch
PIC16F15376 Pin Description Shared Functionality
RE2 User switch (SW0) Edge connector
4.2.3 Crystal
The PIC16F15376 Curiosity Nano board has a footprint for a 32.768 kHz crystal.
The crystal footprint is connected to the PIC16F15376 by default, but the GPIOs are routed out to theedge connector through open solder straps. The two I/O lines routed to the edge connector aredisconnected by default to both reduce the chance of contention to the crystal as well as removingexcessive capacitance on the lines when using the crystal. To use the pins RC0 and RC1 as GPIO on theedge connector, some hardware modification is needed. Add a solder blob to the open straps on the
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bottom side to connect the routing. The crystal should be disconnected when using the pin as GPIO, asthis might harm the crystal.
Table 4-3. Crystal Connections
PIC16F15376 Pin Function Shared Functionality
RC0 SOSC0 (Crystal output) Edge connector
RC1 SOSCI (Crystal input) Edge connector
4.2.4 On-Board Debugger ImplementationPIC16F15376 Curiosity Nano features an on-board debugger that can be used to program and debug thePIC16F15376 using ICSP. The on-board debugger also includes a Virtual Com port interface over UARTand DGI GPIO. Microchip MPLAB® X can be used as a front-end for the on-board debugger forprogramming and debugging. Data Visualizer can be used as a front-end for the CDC and DGI GPIO.
4.2.4.1 On-Board Debugger ConnectionsThe table below shows the connections between the target and the debugger section. All connectionsbetween the target and the debugger are tri-stated as long as the debugger is not actively using theinterface. Hence there is little contamination of the signals the pins can be configured to anything the userwants.
For further information on how to use the capabilities of the on-board debugger, see Section 3. CuriosityNano.
Table 4-4. On-Board Debugger Connections
PIC16F15376Pin
Debugger Pin Function Shared Functionality
RD1 CDC TX UART RX (PIC16F15376 RXline)
Edge connector
RD0 CDC RX UART TX (PIC16F15376 TX line) Edge connector
RB7 DBG0 ICSPDAT Edge connector
RB6 DBG1 ICSPCLK Edge connector
RE2 DBG2 GPIO Edge connector
RE3 DBG3 MCLR Edge connector
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© 2019 Microchip Technology Inc. User Guide 50002900A-page 17
https://www.microchip.com/mplab/avr-support/data-visualizer
5. Hardware Revision History and Known IssuesThis user guide provides the latest available revision of the kit. This section contains information aboutknown issues, a revision history of older revisions, and how older revisions differ from the latest revision.
5.1 Identifying Product ID and RevisionThe revision and product identifier of the PIC16F15376 Curiosity Nano can be found in two ways; eitherthrough Microchip MPLAB® X or by looking at the sticker on the bottom side of the PCB.
By connecting a PIC16F15376 Curiosity Nano to a computer with Microchip MPLAB® X running, aninformation window will pop up. The first six digits of the serial number, which is listed under kit details,contain the product identifier and revision.
The same information can be found on the sticker on the bottom side of the PCB. Most kits will print theidentifier and revision in plain text as A09-nnnn\rr, where “nnnn” is the identifier and “rr” is the revision.The boards with limited space have a sticker with only a QR-code, containing the product identifier,revision and the serial number.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number
The product identifier for PIC16F15376 Curiosity Nano is A09-3251.
5.2 Revision 2Revision 2 adds the Target Power strap and staggered the holes along the edge of the PCB forconvenient use of pin headers without soldering.
5.3 Revision 1Revision 1 is the initially released revision with limited distribution.
The holes along the edge of revision 1 are not staggered as described in 4.1.2 Using Pin Headers, andrequires that any pin headers must be soldered into the board for use.
Revision 1 does not have the Target Power strap described in 3.4 Target Current Measurement, insteadcurrent can be measured across the Power Supply strap as described in 3.5 Disconnecting the On-Board Debugger.
PIC16F15376 Curiosity NanoHardware Revision History and Known Issues
© 2019 Microchip Technology Inc. User Guide 50002900A-page 18
Figure 5-1. PIC16F15376 Curiosity Nano Revision 1
PIC16F15376 Curiosity NanoHardware Revision History and Known Issues
© 2019 Microchip Technology Inc. User Guide 50002900A-page 19
6. Document Revision HistoryDoc. rev. Date Comment
A 07/2019 Initial document release.
PIC16F15376 Curiosity NanoDocument Revision History
© 2019 Microchip Technology Inc. User Guide 50002900A-page 20
7. Appendix
7.1 SchematicFigure 7-1. PIC16F15376 Curiosity Nano Schematic
11
22
33
44
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66
77
88
DD
CC
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AA
2 of
4
PIC
16F
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6 C
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Dra
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By:
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Size
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GN
D
VC
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GET
32.7
68kH
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orpo
ratio
nST
3215
SB32
768C
0HPW
BB
XC
200
N.M
.
10p
C20
3N
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GN
D
100n
C20
2
GN
D
VC
C_T
AR
GET
100n
C20
0
GN
D32kH
z C
RY
STA
L
1kR203
1kR203
USE
R L
ED
VC
C_T
AR
GET
GN
D
USE
R B
UTT
ON
1k1kR202
YELLOWLEDSML-D12Y1WT86
2 1D200
TS604VM1-035CR13
4 2
SW20
0
GN
D
GN
DG
ND
GN
DG
ND
J203
J201
J202
J204
J209
PIC
16F1
5376
2.2u
FC
205
GN
D
DBG0
CDC_
UART
TXRX
UA
RT
CDC_TXCDC_RX
DBG2
DBG1
DBG3
DBG2
DE
BU
GG
ER
CO
NN
EC
TIO
NS
DBG1
DBG3
DBG0
CDC_
UART
CDC_
UART
TXRX
UA
RT
DBG1
DBG3
DBG2
DBG0
PIC
16F1
5376
Signal
DB
G0
DB
G1
DB
G2
DB
G3
Interface
CD
C T
X
CD
C R
X
UA
RT
RX
UA
RT
TX
VT
G
VOFF
ID_S
YS
ID_SYS
VOFF
2.2u
FC
205
GN
D
TA
RG
ET B
UL
K
100kR200
VC
C_T
AR
GET
100kR200
VC
C_T
AR
GET
MC
LR
PU
LL-
UP
VB
US
RC
7R
D4_
SSR
D5
RD
6R
D7
RB
0_TX
RB
1_SC
LR
B2_
SDA
RC
0_SO
SCO
RA
6_A
NA
6R
A7_
AN
A7
RE2
_SW
0R
E1R
E0_L
ED0
RA
5_A
NA
5R
A4_
AN
A4_
PWM
RB3_RXRB4RB5RB6_ICSPCLKRB7_ICSPDATRE3_MCLRRA0_ANA0RA1_ANA1RA2_ANA2RA3_ANA3_PWM
RC6_SCKRC5_MISORC4_MOSIRD3RD2
RD0_TXRD1_RX
RC3_RXRC2_TXRC1_SOSCI
CD
C R
X3
CD
C T
X4
DB
G1
5D
BG
26
0 TX
71
RX
82
SDA
93
SCL
104
MO
SI11
5 M
ISO
126
SCK
137
SS14
GN
D15
0 (T
X)
161
(RX
)17
218
319
020
GN
D24
DB
G3
46D
BG
045
GN
D44
VC
C43
PWM
338
AD
C 2
37A
DC
136
AD
C 0
35G
ND
34
430
426
GN
D25
AD
C 7
42A
DC
641
AD
C 5
40PW
M 4
39
DEB
UG
GER
TAR
GET
ID2
VO
FF47
121
222
323
527
628
729
531
632
733
RES
ERV
ED1
VB
US
48
CN
AN
O48
-pin
edg
e co
nnec
tor
J200
RD
0_TX
RD
1_R
XR
B6_
ICSP
CLK
RE2
_SW
0R
C2_
TXR
C3_
RX
RB
2_SD
AR
B1_
SCL
RC
4_M
OSI
RC
5_M
ISO
RC
6_SC
KR
D4_
SS
RD
0_TX
RD
1_R
XR
D2
RD
3
RB
0_TX
RB
3_R
XR
B4
RC
7
RE3
_MC
LRR
B7_
ICSP
DA
T
RA
7_A
NA
7R
A6_
AN
A6
RA
5_A
NA
5R
A4_
AN
A4_
PWM
RA
3_A
NA
3_PW
MR
A2_
AN
A2
RA
1_A
NA
1R
A0_
AN
A0
RD
7R
D6
RD
5R
B5
RC
1_SO
SCI
RC
0_SO
SCO
RE1
RE0
_LED
0
RE2_SW0
RE0_LED0
J205
J206
RC0_SOSCO
RC1_SOSCI
ICSP
DA
T
ICSP
CLK
GPI
O
MC
LR
2.3V
- 5.
5V
PRO
G/D
EB
UG
PU
LL
47k 47kR204
47k 47kR205
GN
D
DB
G0
DB
G1
J211
J210
J207
J208
GN
D
RE3
_MC
LR
PIC
16F1
5376
T-I/M
V
RC7
1RD
42
RD5
3RD
64
RD7
5VS
S6
VDD
7RB
08
RB1
9RB
210
RB3 11RB4 12RB5 13RB6/ICSPCLK 14RB7/ICSPDAT 15RE3/MCLR 16RA0 17RA1 18RA2 19RA3 20
RA4
21RA
522
RE0
23RE
124
RE2
25VD
D26
VSS
27RA
728
RA6
29RC
030
RC131 RC232 RC333 RD034 RD135 RD236 RD337 RC438 RC539 RC640PAD41
U20
0
(RC
1)_S
OSC
I(R
C0)
_SO
SCO
NC
10p
C20
4N
.M.
VC
C_E
DG
E
VC
C_E
DG
E
NO
TE o
n U
AR
T/C
DC
:
RX
/TX
on
the
head
er d
enot
es th
e in
put/o
utpu
t di
rect
ion
of th
e si
gnal
resp
ectiv
e to
it's
sour
ce.
CD
C T
X is
out
put f
rom
the
on-b
oard
deb
ugge
r.C
DC
RX
is in
put t
o th
e on
-boa
rd d
ebug
ger.
TX is
out
put f
rom
the
TAR
GET
dev
ice.
RX
is in
put t
o th
e TA
RG
ET d
evic
e.
NO
TE o
n I2
C:
No
pull-
ups o
n bo
ard.
Pul
l-ups
shou
ld b
e m
ount
ed c
lose
to sl
ave
devi
ce(s
).
PIC16F15376 Curiosity NanoAppendix
© 2019 Microchip Technology Inc. User Guide 50002900A-page 21
11
22
33
44
55
66
77
88
DD
CC
BB
AA
3 of
4
PIC
16F
1537
6 C
urio
sity
Nan
o
09.0
5.20
19PI
C16
F153
76_C
urio
sity
_Nan
o_D
ebug
ger.S
chD
oc
Proj
ect T
itle
PCB
Ass
embl
y N
umbe
r:PC
BA
Rev
isio
n:
File
:PC
B N
umbe
r:PC
B
Rev
isio
n:
Des
igne
d wi
th
Dra
wn
By:
Mic
roch
ip N
orw
ay
Shee
t Titl
eD
ebug
ger
Engi
neer
:TF
, HN
A08
-298
02
Size
A3
A09
-325
12
Page
:D
ate:A
ltium
.com
GN
D
USB
D_P
USB
D_N
100n
C10
7
100n
C10
8
RXTX
UA
RT
CDC_
UART
1kR
107
VC
C_P
3V3
100n
C10
4
GN
D
SRST
STA
TUS_
LED
SHIE
LD
VC
C_P
3V3
GN
D
TP10
0
Test
poin
t Arr
ay
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
GN
D
4.7u
F
C10
0
DBG0
DB
G0
21
GR
EEN
LED
SML-
P12M
TT86
R
D10
0
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B01
42A
B2-
269
J105
PAD
33PA
D
PA00
1PA
012
PA02
3PA
034
GND 10VDDANA 9
PA04
5PA
056
PA06
7PA
078
PA08 11PA09 12PA10 13PA11 14PA14 15PA15 16
PA16
17PA
1718
PA18
19PA
1920
PA22
21US
B_SO
F/PA
2322
USB_
DM/P
A24
23US
B_DP
/PA2
524
PA2725 RESETN26 PA2827 GND28 VDDCORE29 VDDIN30 SWDCLK/PA3031 SWDIO/PA3132
SAM
D21
E18A
-MU
TU
100
VOUT
1
VOUT
2
GND 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-3.3
YM
TU
101
VC
C_V
BU
SV
CC
_P3V
3
GN
D
USB
D_P
USB
D_N
GN
D
1uC10
6V
CC
_MC
U_C
OR
E
VC
C_P
3V3
VC
C_P
3V3
GN
D
4.7u
F
C10
0VO
UT1
VOUT
2
GNGGD 3
EN4
VIN
6
NC5
EP 7
MIC
5528
-3.3
YM
TU
101
VC
C_V
BU
SV
CC
_P3V
3
GN
D
2.2u
FC
101
GN
D
74LV
C1T
45FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
3
VC
C_P
3V3
GN
D
74LV
C1T
45FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
4
VC
C_P
3V3
GN
D
74LV
C1T
45FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
5
VC
C_P
3V3
GN
D
GN
D GN
D
GN
D
GN
D
74LV
C1T
45FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
7
VC
C_P
3V3
GN
DDB
G2
DB
G3_
CTR
L
S1_0
_TX
S1_1
_RX
S0_2
_TX
DA
CV
TG_A
DC
RES
ERV
ED
S0_3
_CLK
DBG0_CTRL
CD
C_T
X_C
TRL
BO
OT
DE
BUG
GE
R P
OW
ER
/ST
AT
US
LED
1kR
107
VC
C_P
3V3
21
GR
EEN
LED
SML-
P12M
TT86
R
D10
0
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NC/A
DJ5
GND 7M
IC53
53U
102
VC
C_V
BU
S
100n
C10
2
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R10
6
GN
D
EN1
BYP
6
VOUT
4
GND
2
VIN
3
NC/A
DJ5
GND 7M
IC53
53U
102
VC
C_V
BU
S
100n
C10
2
GN
D
GN
D
47kR101
27kR104 G
ND
33k
R10
6
2.2u
F
C10
3 GN
D
1k1kR
108
J100
VC
C_L
EVEL
VC
C_R
EGU
LATO
R
74LV
C1T
45FW
4-7
VCCA
1VC
CB6
A3
GND
2DI
R5
B4
U10
6
VC
C_P
3V3
GN
DDB
G1
CD
C_R
XC
DC
_TX
DBG3
DBG1_CTRL
DE
BU
GG
ER
RE
GU
LA
TO
R
REG_ENABLE
REG
_EN
AB
LE
47k 47kR103
VC
C_L
EVEL
VC
C_L
EVEL
VC
C_L
EVEL
VC
C_L
EVEL
VC
C_L
EVEL
47k 47kR102
47k 47kR105
SWC
LK
GN
D
47k 47kR100 G
ND
DB
G2
S0_0
_RX
DB
G1_
CTR
L
DB
G0_
CTR
L
GN
D
DB
G3
OPE
N D
RA
IN
TA
RG
ET
AD
JUST
AB
LE
REG
ULA
TO
R
SRST
100n
C10
4
GN
D
SRST
VC
C_P
3V3
GN
D
Test
poin
t Arr
ay
12
34
56
78
910
TCK
TDO
TMS
Vsu
pTD
IG
ND
TRST
SRST
VTr
efG
ND
J102
SWC
LK
DEB
UG
GER
TE
STPO
INT
s DBG2_CTRL
VO
FFC
DC
_RX
_CTR
L
47k 47kR109
DB
G1
CD
C_T
X_C
TRL
CD
C_R
X_C
TRL
SWC
LK
REG_ADJUST
DBG2_GPIO
DB
G3_
CTR
L
DB
G2_
CTR
L
UPD
I
UPD
I
GPI
O
GPI
O
RES
ET
Signal
DB
G0
DB
G1
DB
G2
DB
G3
ICSP
Interface
DA
T
CLK
GPI
O
MC
LR
DB
G3
CD
C T
X
CD
C R
X
UA
RT
RX
UA
RT
TX
UA
RT
RX
UA
RT
TX
TA
RG
ET
TA
RG
ET
1k 1kR
110
VBUS_ADC
DM
N65
D8L
FB
1
23
Q10
1
VC
C-
-
ID_S
YS
VOFF
1kR112
VC
C_P
3V3
ID_S
YSID
_SYS
1kR112
VC
C_P
3V3
VTG
_AD
CD
AC
MIC
9416
3
VIN
B2VO
UTA1
VIN
A2
ENC2
GND
C1VO
UTB1
U10
8
GN
D
ID_S
YS
VTG
_EN
VTG_EN
VBUS_ADC
SWD
IO
ID_S
YS
TP10
1G
ND
SWD
IO
VO
FF
47k 47kR111 G
ND
ID P
IN
DE
BU
GG
ER U
SB M
ICR
O-B
CO
NN
EC
TO
R
GN
D
USB
D_P
USB
D_N SH
IELD
VBUS
1D-
2D+
3
GND
5SH
IELD
16
SHIE
LD2
7
ID4
SHIE
LD3
8SH
IELD
49 M
U-M
B01
42A
B2-
269
J105
VB
US
MC
3621
3
F100
VC
C_V
BU
S
VC
C_E
DG
E
J101
VC
C_T
AR
GET
Prog
ram
min
g co
nnec
tor
for f
acto
ry p
rogr
amm
ing
of
Deb
ugge
r
MIC
5528
:V
in: 2
.5V
to 5
.5V
Vou
t: Fi
xed
3.3V
Imax
: 500
mA
Dro
pout
: 260
mV
@ 5
00m
AA
djus
tabl
e ou
tput
and
lim
itatio
ns:
- The
onb
oard
deb
ugge
r can
adj
ust t
he o
utpu
t vol
tage
of t
he re
gula
tor b
etw
een
1.25
V a
nd 5
.1V
to th
e ta
rget
.- T
he le
vel s
hifte
rs h
ave
a m
inim
al v
olta
ge le
vel o
f 1.6
5V a
nd w
ill li
mit
the
min
imum
ope
ratin
g vo
ltage
allo
wed
for t
he
targ
et to
still
allo
w c
omm
unic
atio
n.- T
he o
utpu
t sw
itch
has a
min
imal
vol
ateg
e le
vel o
f 1.7
0V a
nd w
ill li
mit
the
min
imum
vol
tage
del
iver
ed to
the
targ
et.
- Firm
war
e co
nfig
urat
ion
will
lim
it th
e vo
ltage
rang
e to
be
with
in th
e th
e ta
rget
spec
ifica
tion.
- Firm
war
e fe
edba
ck lo
op w
ill a
djus
t the
out
put v
olta
ge a
ccur
acy
to w
ithin
0.5
%.
PTC
Res
etta
ble
fuse
:H
old
curr
ent:
500m
ATr
ip c
urre
nt: 1
000m
A
MIC
5353
:V
in: 2
.6V
to 6
VV
out:
1.25
V to
5.1
VIm
ax: 5
00m
AD
ropo
ut (t
ypic
al):
50m
V@
150m
A, 1
60m
V @
500
mA
Acc
urac
y: 2
% in
itial
Ther
mal
shut
dow
n an
d cu
rren
t lim
it
Max
imum
out
put v
olta
ge is
lim
ited
by th
e in
put v
olta
ge a
nd th
e dr
opou
t vol
tage
in th
e re
gula
tor.
(Vm
ax =
Vin
- dr
opou
t)
J100
:C
ut-s
trap
used
for f
ull s
epar
atio
n of
targ
et p
ower
from
the
leve
l shi
fters
and
on-
boar
d re
gula
tors
.- F
or c
urre
nt m
easu
rem
ents
usi
ng a
n ex
tern
al p
ower
supp
ly, t
his s
trap
coul
d be
cut
for m
ore
accu
rate
mea
sure
men
ts. L
eaka
ge b
ack
thro
ugh
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PIC16F15376 Curiosity NanoAppendix
© 2019 Microchip Technology Inc. User Guide 50002900A-page 22
7.2 Assembly DrawingFigure 7-2. PIC16F15376 Curiosity Nano Assembly Drawing Top
PIC®MCU
b
PAC10002 PAC10001 COC100 PAC10102 PAC10101 COC101
PAC10201 PAC10202 COC102
PAC10301 PAC10302 COC103
PAC10402 PAC10401 COC104
PAC10602 PAC10601 COC106 PAC10702 PAC10701 COC107
PAC10802
PAC10801 COC108
PAC20001 PAC20002 COC200
PAC20201 PAC20202 COC202
PAC20302
PAC20301 COC203 PAC20402 PAC20401 COC204
PAC20501 PAC20502 COC205
PAD10001 PAD10002 COD100
PAD20002
PAD20001 COD200
PAF10001
PAF10002 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10206
PAJ10205
PAJ10204
PAJ10203
PAJ10202
PAJ10201 COJ102
PAJ105011
PAJ105010 PAJ10508
PAJ10509 PAJ10507
PAJ10506 PAJ10501
PAJ10502
PAJ10503
PAJ10504
PAJ10505
PAJ10500
COJ105
PAJ200048 PAJ200047
PAJ200024 PAJ20002 PAJ20001
PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023
PAJ200026 PAJ200025 PAJ200027 PAJ200028 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204 PAJ20502 PAJ20501 COJ205 PAJ20602 PAJ20601 COJ206
PAJ20702 PAJ20701 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208 PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100 COQ101
PAR10001 PAR10002 COR100
PAR10102 PAR10101 COR101
PAR10201 PAR10202 COR102
PAR10301 PAR10302 COR103
PAR10402 PAR10401 COR104
PAR10501
PAR10502 COR105
PAR10602 PAR10601 COR106
PAR10701 PAR10702 COR107
PAR10802 PAR10801 COR108
PAR10902
PAR10901 COR109 PAR11002 PAR11001 COR110
PAR11102 PAR11101 COR111
PAR11202 PAR11201 COR112
PAR20001 PAR20002 COR200
PAR20201 PAR20202 COR202 PAR20301 PAR20302 COR203
PAR20401 PAR20402 COR204
PAR20501 PAR20502 COR205
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100 PATP10101 COTP101
PAU10009 PAU10008 PAU10007
PAU10006
PAU10005 PAU10004
PAU10003
PAU10002
PAU10001
PAU100010 PAU100011 PAU100012 PAU100013 PAU100014 PAU100015 PAU100016 PAU100017 PAU100018
PAU100019
PAU100020 PAU100021
PAU100022
PAU100023
PAU100024
PAU100025 PAU100026 PAU100027 PAU100028 PAU100029 PAU100030 PAU100031 PAU100032
PAU100033 COU100
PAU10101 PAU10102 PAU10103
PAU10106 PAU10105 PAU10104
PAU10107
PAU10100 COU101 PAU10201 PAU10202 PAU10203
PAU10206
PAU10205 PAU10204
PAU10207 COU102
PAU10301
PAU10302 PAU10303 PAU10304
PAU10305 PAU10306
PAU10300 COU103
PAU10401
PAU10402 PAU10403 PAU10404
PAU10405 PAU10406
PAU10400 COU104
PAU10501
PAU10502 PAU10503 PAU10504
PAU10505 PAU10506
PAU10500 COU105
PAU10601
PAU10602 PAU10603 PAU10604
PAU10605 PAU10606
PAU10600 COU106
PAU10701
PAU10702 PAU10703 PAU10704
PAU10705 PAU10706
PAU10700 COU107
PAU1080C2 PAU1080C1 PAU1080B2 PAU1080B1
PAU1080A2 PAU1080A1 COU108
PAU20001 PAU20002 PAU20003 PAU20004
PAU20005 PAU20006 PAU20007 PAU20008 PAU20009
PAU200010 PAU200011 PAU200012
PAU200013 PAU200014 PAU200015 PAU200016
PAU200017 PAU200018 PAU200019 PAU200020 PAU200021 PAU200022 PAU200023 PAU200024 PAU200025 PAU200026 PAU200027 PAU200028 PAU200029 PAU200030
PAU200031 PAU200032 PAU200033 PAU200034 PAU200035 PAU200036 PAU200037 PAU200038 PAU200039 PAU200040
PAU200041 PAU20000 COU200 PAXC20001 PAXC20002
COXC200
Figure 7-3. PIC16F15376 Curiosity Nano Assembly Drawing Bottom
ctR
PAC10002 PAC10001 COC100 PAC10102 PAC10101 COC101
PAC10201 PAC10202 COC102
PAC10301 PAC10302 COC103
PAC10402 PAC10401 COC104
PAC10602 PAC10601 COC106 PAC10702 PAC10701 COC107
PAC10802
PAC10801 COC108
PAC20001 PAC20002 COC200
PAC20201 PAC20202 COC202
PAC20302
PAC20301 COC203 PAC20402 PAC20401 COC204
PAC20501 PAC20502 COC205
PAD10001 PAD10002 COD100
PAD20002
PAD20001 COD200
PAF10001
PAF10002 COF100
PAJ10002 PAJ10001 COJ100
PAJ10101 PAJ10102 COJ101
PAJ10206
PAJ10205
PAJ10204
PAJ10203
PAJ10202
PAJ10201 COJ102
PAJ105011
PAJ105010 PAJ10508
PAJ10509 PAJ10507
PAJ10506 PAJ10501
PAJ10502
PAJ10503
PAJ10504
PAJ10505
PAJ10500
COJ105
PAJ200048 PAJ200047
PAJ200024 PAJ20002 PAJ20001
PAJ200046 PAJ200045 PAJ200044 PAJ200043 PAJ200042 PAJ200041 PAJ200040 PAJ200039 PAJ200038 PAJ200037 PAJ200036 PAJ200035 PAJ200034 PAJ200033 PAJ200032 PAJ200031 PAJ200030 PAJ200029
PAJ20003 PAJ20004 PAJ20005 PAJ20006 PAJ20007 PAJ20008 PAJ20009 PAJ200010 PAJ200011 PAJ200012 PAJ200013 PAJ200014 PAJ200015 PAJ200016 PAJ200017 PAJ200018 PAJ200019 PAJ200020 PAJ200021 PAJ200022 PAJ200023
PAJ200026 PAJ200025 PAJ200027 PAJ200028 PAJ20000
COJ200
PAJ20102 PAJ20101 COJ201
PAJ20202 PAJ20201 COJ202
PAJ20302 PAJ20301 COJ203
PAJ20402 PAJ20401 COJ204 PAJ20502 PAJ20501 COJ205 PAJ20602 PAJ20601 COJ206
PAJ20702 PAJ20701 PAJ20705 COJ207
PAJ20801 PAJ20802 PAJ20805 COJ208 PAJ20901 PAJ20902 COJ209
PAJ21002 PAJ21001 COJ210
PAJ21102 PAJ21101 COJ211
COLABEL1
PAQ10101 PAQ10102 PAQ10103 PAQ10100 COQ101
PAR10001 PAR10002 COR100
PAR10102 PAR10101 COR101
PAR10201 PAR10202 COR102
PAR10301 PAR10302 COR103
PAR10402 PAR10401 COR104
PAR10501
PAR10502 COR105
PAR10602 PAR10601 COR106
PAR10701 PAR10702 COR107
PAR10802 PAR10801 COR108
PAR10902
PAR10901 COR109 PAR11002 PAR11001 COR110
PAR11102 PAR11101 COR111
PAR11202 PAR11201 COR112
PAR20001 PAR20002 COR200
PAR20201 PAR20202 COR202 PAR20301 PAR20302 COR203
PAR20401 PAR20402 COR204
PAR20501 PAR20502 COR205
PASW20003
PASW20004 PASW20002
PASW20001 COSW200
PATP10001 COTP100 PATP10101 COTP101
PAU10009 PAU10008 PAU10007
PAU10006
PAU10005 PAU10004
PAU10003
PAU10002
PAU10001
PAU100010 PAU100011 PAU100012 PAU100013 PAU100014 PAU100015 PAU100016 PAU100017 PAU100018
PAU100019
PAU100020 PAU100021
PAU100022
PAU100023
PAU100024
PAU100025 PAU100026 PAU100027 PAU100028 PAU100029 PAU100030 PAU100031 PAU100032
PAU100033 COU100
PAU10101 PAU10102 PAU10103
PAU10106 PAU10105 PAU10104
PAU10107
PAU10100 COU101 PAU10201 PAU10202 PAU10203
PAU10206
PAU10205 PAU10204
PAU10207 COU102
PAU10301
PAU10302 PAU10303 PAU10304
PAU10305 PAU10306
PAU10300 COU103
PAU10401
PAU10402 PAU10403 PAU10404
PAU10405 PAU10406
PAU10400 COU104
PAU10501
PAU10502 PAU10503 PAU10504
PAU10505 PAU10506
PAU10500 COU105
PAU10601
PAU10602 PAU10603 PAU10604
PAU10605 PAU10606
PAU10600 COU106
PAU10701
PAU10702 PAU10703 PAU10704
PAU10705 PAU10706
PAU10700 COU107
PAU1080C2 PAU1080C1 PAU1080B2 PAU1080B1
PAU1080A2 PAU1080A1 COU108
PAU20001 PAU20002 PAU20003 PAU20004
PAU20005 PAU20006 PAU20007 PAU20008 PAU20009
PAU200010 PAU200011 PAU200012
PAU200013 PAU200014 PAU200015 PAU200016
PAU200017 PAU200018 PAU200019 PAU200020 PAU200021 PAU200022 PAU200023 PAU200024 PAU200025 PAU200026 PAU200027 PAU200028 PAU200029 PAU200030
PAU200031 PAU200032 PAU200033 PAU200034 PAU200035 PAU200036 PAU200037 PAU200038 PAU200039 PAU200040
PAU200041 PAU20000 COU200 PAXC20001 PAXC20002
COXC200
PIC16F15376 Curiosity NanoAppendix
© 2019 Microchip Technology Inc. User Guide 50002900A-page 23
7.3 Curiosity Nano Base for Click boards™Figure 7-4. PIC16F15376 Curiosity Nano Pinout Mapping
USB
DEB
UG
GER
PIC1
6F15
376
SW0
LED
0
PS L
EDNC
NC
ID
ID
CDC RX
CDC RX
RD0
CDC TX
CDC TX
RD1
DBG1
DBG1
RB6
ICSPCLK
DBG2
DBG2
RE2
SW0
RC2
RC2
TX
RC3
RC3
RX
RB2
RB2
SDA
RB1
RB1
SCL
RC4
RC4
MOSI
RC5
RC5
MISO
RC6
RC6
SCK
RD4
RD4
SS
GND
GND
RB0
RB0
TX
RB3
RB3
RX
RB4
RB4
RC7
RC7
RD0
RD0
TX
RD1
RD1
RX
RD2
RD2
RD3
RD3
GND
GND
VBUS
VBUS
VOFF
VOFF
DBG3
DBG3
RE3
MCLR
DBG0
DBG0
RB7
ICSPDAT
GND
GND
VTG
VTG
RA7
RA7
ANA7
RA6
RA6
ANA6
RA5
RA5
ANA5
RA4
RA4
ANA4
PWM
RA3
RA3
ANA3
PWM
RA2
RA2
ANA2
RA1
RA1
ANA1
RA0
RA0
ANA0
GND
GND
RD7
RD7
RD6
RD6
RD5
RD5
RB5
RB5
(RC1)
(RC1)
SOSCI
(RC0)
(RC0)
SOSCO
RE1
RE1
RE0
RE0
LED0
GND
GND
PIC1
6F15
376
CURI
OSI
TY N
AN
O
Analog
Debug
I2C
SPI
UART
Shared pinout
Peripheral
Port
PWM
Power
Ground
1
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
.3V
+5V
GN
DG
ND
2
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
.3V
+5V
GN
DG
ND
3
AN
PWM
RST
INT
CSRX
SCK
TXM
ISO
SCL
MO
SISD
A+3
.3V
+5V
GN
DG
ND
Xpl
aine
d Pr
o Ex
tens
ion
EXT1
12
1920
Curio
sity
Nan
o Ba
sefo
r clic
k bo
ards
TM
RA0
RA3
RA7
RA6
RD4
RC3
RC6
RC2
RC5
RB1
RC4
RB2
+3.3V
+5V
GND
GND
RA1
RA4
RC7
RB4
RD6
RB3
RC6
RB0
RC5
RB1
RC4
RB2
+3.3V
+5V
GND
GND
RA2
RA5
RD5
RB5
RD7
RC3
RC6
RC2
RC5
RB1
RC4
RB2
+3.3V
+5V
GND
GND
ID
GND
RA1
RA2
RC7
RD5
RA4
RA5
RB4
RD7
RB2
RB1
RB3
RB0
RD6
RC4
RC5
RC6
GND
+3.3V
PIC16F15376 Curiosity NanoAppendix
© 2019 Microchip Technology Inc. User Guide 50002900A-page 24
7.4 Connecting External DebuggersEven though there is an on-board debugger, external debuggers can be connected directly to thePIC16F15376 Curiosity Nano to program/debug the PIC16F15376. The on-board debugger keeps all thepins connected to the PIC16F15376 and board edge in tri-state when not actively used. Therefore, theon-board debugger will not interfere with any external debug tools.
Figure 7-5. Connecting the MPLAB PICkit™ 4 In-Circuit Debugger/Programmer to PIC16F15376Curiosity Nano
2345678 1
MCLRVDD GroundDATACLOCK
3 = Ground
4 = PGD
5 = PGC
6 = Unused7 = Unused
8 = Unused
2 = VDD 1 = MCLR
MPLAB® PICkit™ 4
USB
DEBUGGER
PS LEDNC
ID
CDC RX
CDC TX
DBG1
DBG2
VBUS
VOFF
DBG3
DBG0
GND
VTGCURIOSITY NANO
CAUTION The MPLAB PICkit 4 In-circuit Debugger/Programmer is capable of delivering high voltage onthe MCLR pin. R110 can be permanently damaged by the high voltage. If R110 is broken, theon-board debugger can not enter programming mode of the PIC16F15376, and will typically failat reading the device ID.
PIC16F15376 Curiosity NanoAppendix
© 2019 Microchip Technology Inc. User Guide 50002900A-page 25
CAUTION To avoid contention between the external debugger and the on-board debugger, do not start anyprogramming/debug operation with the on-board debugger through Microchip MPLAB® X ormass storage programming while the external tool is active.
PIC16F15376 Curiosity NanoAppendix
© 2019 Microchip Technology Inc. User Guide 50002900A-page 26
The Microchip Website
Microchip provides online support via our website at http://www.microchip.com/. This website is used tomake files and information easily available to customers. Some of the content available includes:
• Product Support – Data sheets and errata, application notes and sample programs, designresources, user’s guides and hardware support documents, latest software releases and archivedsoftware
• General Technical Support – Frequently Asked Questions (FAQs), technical support requests,online discussion groups, Microchip design partner program member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip press releases,listing of seminars and events, listings of Microchip sales offices, distributors and factoryrepresentatives
Product Change Notification Service
Microchip’s product change notification service helps keep customers current on Microchip products.Subscribers will receive email notification whenever there are changes, updates, revisions or erratarelated to a specified product family or development tool of interest.
To register, go to http://www.microchip.com/pcn and follow the registration instructions.
Customer Support
Users of Microchip products can receive assistance through several channels:
• Distributor or Representative• Local Sales Office• Embedded Solutions Engineer (ESE)• Technical Support
Customers should contact their distributor, representative or ESE for support. Local sales offices are alsoavailable to help customers. A listing of sales offices and locations is included in this document.
Technical support is available through the web site at: http://www.microchip.com/support
Microchip Devices Code Protection Feature
Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet.• Microchip believes that its family of products is one of the most secure families of its kind on the
market today, when used in the intended manner and under normal conditions.• There are dishonest and possibly illegal methods used to breach the code protection feature. All of
these methods, to our knowledge, require using the Microchip products in a manner outside theoperating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so isengaged in theft of intellectual property.
• Microchip is willing to work with the customer who is concerned about the integrity of their code.• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their
code. Code protection does not mean that we are guaranteeing the product as “unbreakable.”
PIC16F15376 Curiosity Nano
© 2019 Microchip Technology Inc. User Guide 50002900A-page 27
http://www.microchip.com/http://www.microchip.com/pcnhttp://www.microchip.com/support
Code protection is constantly evolving. We at Microchip are committed to continuously improving thecode protection features of our products. Attempts to break Microchip’s code protection feature may be aviolation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your softwareor other copyrighted work, you may have a right to sue for relief under that Act.
Legal Notice
Information contained in this publication regarding device applications and the like is provided only foryour convenience and may be superseded by updates. It is your responsibility to ensure that yourapplication meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS ORWARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORYOR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITSCONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE.Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in lifesupport and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend,indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resultingfrom such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectualproperty rights unless otherwise stated.
Trademarks
The Microchip name and logo, the Microchip logo, Adaptec, AnyRate, AVR, AVR logo, AVR Freaks,BesTime, BitCloud, chipKIT, chipKIT logo, CryptoMemory, CryptoRF, dsPIC, FlashFlex, flexPWR,HELDO, IGLOO, JukeBlox, KeeLoq, Kleer, LANCheck, LinkMD, maXStylus, maXTouch, MediaLB,megaAVR, Microsemi, Microsemi logo, MOST, MOST logo, MPLAB, OptoLyzer, PackeTime, PIC,picoPower, PICSTART, PIC32 logo, PolarFire, Prochip Designer, QTouch, SAM-BA, SenGenuity, SpyNIC,SST, SST Logo, SuperFlash, Symmetricom, SyncServer, Tachyon, TempTrackr, TimeSource, tinyAVR,UNI/O, Vectron, and XMEGA are registered trademarks of Microchip Technology Incorporated in theU.S.A. and other countries.
APT, ClockWorks, The Embedded Control Solutions Company, EtherSynch, FlashTec, Hyper SpeedControl, HyperLight Load, IntelliMOS, Libero, motorBench, mTouch, Powermite 3, Precision Edge,ProASIC, ProASIC Plus, ProASIC Plus logo, Quiet-Wire, SmartFusion, SyncWorld, Temux, TimeCesium,TimeHub, TimePictra, TimeProvider, Vite, WinPath, and ZL are registered trademarks of MicrochipTechnology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, BlueSky,BodyCom, CodeGuard, CryptoAuthentication, CryptoAutomotive, CryptoCompanion, CryptoController,dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, EtherGREEN, In-Circuit SerialProgramming, ICSP, INICnet, Inter-Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, memBrain,Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, OmniscientCode Generation, PICDEM, PICDEM.net, PICkit, PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE,Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI, SuperSwitcher, SuperSwitcher II, TotalEndurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA aretrademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.
The Adaptec logo, Frequency on Demand, Silicon Storage Technology, and Symmcom are registeredtrademarks of Microchip Technology Inc. in other countries.
PIC16F15376 Curiosity Nano
© 2019 Microchip Technology Inc. User Guide 50002900A-page 28
GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary ofMicrochip Technology Inc., in other countries.
All other trademarks mentioned herein are property of their respective companies.© 2019, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
ISBN: 978-1-5224-4762-7
Quality Management System
For information regarding Microchip’s Quality Management Systems, please visit http://www.microchip.com/quality.
PIC16F15376 Curiosity Nano
© 2019 Microchip Technology Inc. User Guide 50002900A-page 29
http://www.microchip.com/qualityhttp://www.microchip.com/quality
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© 2019 Microchip Technology Inc. User Guide 50002900A-page 30
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PrefaceTable of Contents1. Introduction1.1. Features1.2. Kit Overview
2. Getting Started2.1. Curiosity Nano Quick Start2.2. Design Documentation and Relevant Links
3. Curiosity Nano3.1. On-board Debugger3.1.1. Virtual COM Port3.1.1.1. Overview3.1.1.2. Limitations3.1.1.3. Signaling3.1.1.4. Advanced Use
3.1.2. Mass Storage Disk3.1.2.1. Mass Storage Device3.1.2.2. Configuration Words
3.2. Curiosity Nano Standard Pinout3.3. Power Supply3.3.1. Target Regulator3.3.2. External Supply3.3.3. VBUS Output Pin
3.4. Target Current Measurement3.5. Disconnecting the On-Board Debugger
4. Hardware User Guide4.1. Connectors4.1.1. PIC16F15376 Curiosity Nano Pinout4.1.2. Using Pin Headers
4.2. Peripherals4.2.1. LED4.2.2. Mechanical Switch4.2.3. Crystal4.2.4. On-Board Debugger Implementation4.2.4.1. On-Board Debugger Connections
5. Hardware Revision History and Known Issues5.1. Identifying Product ID and Revision5.2. Revision 25.3. Revision 1
6. Document Revision History7. Appendix7.1. Schematic7.2. Assembly Drawing7.3. Curiosity Nano Base for Click boards™7.4. Connecting External Debuggers
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