MikroElektronika
Figure 1: USB UART additional board
FP1
FERRITE
CN1
USBDM
USBDP
RX-MCU
DTR
DCD
DSR
RI
RTS-MCU
TX-MCU
CTS-MCU
P3
P1
P0
P2
P4
OSCIDTR#
OSCOTXD
TEST
VCC
RTS#
DSR#
AGND
RESET#
VCCIO
DCD#
NC
GND
RXD
CTS#
CBUS1
USBDM
GND
CBUS2
GND
USBDP
NC
CBUS3
CBUS0
3V3OUT
RI#
CBUS4
FT232RL
U1
3V3OUT
C4
100nF
C1
C2
100nF
100nF
VCCIO
E1
10uF
VCCIO
RX-MCU
DT
R RI
TX-MCU
P4
DC
D
CTS-MCU
P3
DS
R
P1
RTS-MCU
P2
P0
CN2
CN3
J6
VCC
3V3OUT
VCC
VCCIO
22.1
6mm
26.92mm
Figure 3: USB UART additional board connection schematic
Figure 4: Dimensions of the board
How to connect the board?
The USB UART additional board is connected to USB devices via the USB MINIB connector CN1. Connection with the microcontroller is established via a 1x6 connector CN2 and 1x9 connector CN3. Jumper J6 is used to select a logic level to be sent to the VCCIO pin on 1x6 connector CN2. This logic level may be 3.3V or 5V.
USB UARTThe USB UART additional board is used to connect USB devices to the UART module built into the microcontroller.
Key features:
- Serial data transfer via UART communication; - 5V DC power supply voltage; - Low power consumption; etc.