21
Introduction The STEVAL-STMODLTE expansion board adds LTE connectivity to evaluation boards hosting the STMod+ expansion connector. It embeds an LTE cellular modem and an eSIM with a worldwide coverage. The expansion board can be used only with the furnished antenna and is compatible with all STMicroelectronics Discovery kits featuring an STMod+ connector, such as the STM32L496G-DISCO, and with any STMod+ compatible evaluation board. The package, combined with any compatible evaluation board, represents an ideal development platform for cellular and cloud technology-based solutions. Figure 1. STEVAL-STMODLTE expansion board Getting started with the LTE connectivity expansion board for STMod+ connector compatible evaluation boards UM2810 User manual UM2810 - Rev 1 - December 2020 For further information contact your local STMicroelectronics sales office. www.st.com

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Page 1: Getting started with the LTE connectivity expansion board

IntroductionThe STEVAL-STMODLTE expansion board adds LTE connectivity to evaluation boards hosting the STMod+ expansionconnector. It embeds an LTE cellular modem and an eSIM with a worldwide coverage.

The expansion board can be used only with the furnished antenna and is compatible with all STMicroelectronics Discovery kitsfeaturing an STMod+ connector, such as the STM32L496G-DISCO, and with any STMod+ compatible evaluation board.

The package, combined with any compatible evaluation board, represents an ideal development platform for cellular and cloudtechnology-based solutions.

Figure 1. STEVAL-STMODLTE expansion board

Getting started with the LTE connectivity expansion board for STMod+ connector compatible evaluation boards

UM2810

User manual

UM2810 - Rev 1 - December 2020For further information contact your local STMicroelectronics sales office.

www.st.com

Page 2: Getting started with the LTE connectivity expansion board

1 Overview

The STEVAL-STMODLTE expansion board main features are:• LTE connectivity expansion for evaluation boards hosting the STMod+ connector• Embedded Quectel BG96 FCC and IC certified LTE module (FCC ID: XMR201707BG96 and IC:

10224A-201709BG96)• Modem reset red LED and modem signaling green LED• ST Incard eSIM• Switchable SIM interface, eSIM and MicroSIM• Pulse SMA antenna for the following frequency ranges: 824/900/1800/1900/2100 MHz• Modem firmware can be easily upgraded through the dedicated micro-B USB connector

UM2810Overview

UM2810 - Rev 1 page 2/21

Page 3: Getting started with the LTE connectivity expansion board

2 Board components

Figure 2 shows the STEVAL-STMODLTE top side main components:1. Penta band (EU/US GSM/WCDMA) right angle stubby antenna, model W1900 by Pulse Larsen Antennas,

for M2M applications, with a frequency range of 850/900/1800/1900/2100 MHz

Table 1. Antenna electrical specifications

Frequency (MHz) Max Gain(dBi) Efficiency (% / dB) Return lossmin. (dB) Impedance (Ω) Operating

temperature (°C)

824 ÷ 960 1.0 (peak)-0.5 (min.)

65 / -1.8 (peak)50 / -3.0 (min.) -4

50 -40 ÷ 851710 ÷ 1990 2.0 (peak0.5 (min.)

65 / -1.8 (peak)50 / -3.0 (min.) -6

1920 ÷ 2170 2.5 (peak)2.0 (min.)

65 / -1.8 (peak)50 / -3.0 (min.) -6

Important:As required by the U.S. Federal Communications Commission normative (cfr. section 15.203 Antenna requirement), noantenna other than that furnished shall be used with the device. The antenna must be professionally installed and the usercannot replace it with a different one.

2. Micro USB type AB for firmware update3. ST Incard eSIM4. STMod+ for connection with compatible mother boards5. Green LED for modem signaling mode6. Red LED indicating the modem is ready for operation7. Quectel BG96 LTE Cat M1/Cat NB1/EGPRS module offering maximum data rates of 375 kbps downlink and

uplink and featuring global frequency bands and ultra-low power consumption

Figure 2. STEVAL-STMODLTE expansion board main components - top view

1

2

3

456

7

UM2810Board components

UM2810 - Rev 1 page 3/21

Page 4: Getting started with the LTE connectivity expansion board

Figure 3 shows the STEVAL-STMODLTE bottom side main components:1. Micro SIM card socket2. I2C EEPROM

Figure 3. STEVAL-STMODLTE expansion board main components - bottom view

1

2

2.1 STMod+ connectorThe STEVAL-STMODLTE STMod+ connector allows physical connection with any compatible mother board.

Table 2. STMod+ connector pin-out details

Pin number Pin name Pin function

1 CTSS Modem UART CTS

2 RXDS Modem UART RXD

3 TXDS Modem UART TXD

4 RTSS Modem UART RTS

5 GND Ground

6 VCC +5 V

7 STMod+ IO7 I2C clock for EEPROM

8 Sim_select1 SIM selection IO1: always set to 1

9 PWRen Modem power enable

10 I2C I2C data for EEPROM

11 RIS Modem ring indicator RI

12 RST Modem reset

13 sim_CLK SIM clock

14 DTRS Modem wake-up

15 VCC +5 V

16 GND Ground

17 Sim_RST SIM reset

18 Sim_select0 SIM selection IO0: 0 for plastic external SIM and 1 for embedded SIM

UM2810STMod+ connector

UM2810 - Rev 1 page 4/21

Page 5: Getting started with the LTE connectivity expansion board

Pin number Pin name Pin function

19 Sim_DATA SIM data

20 STAS Modem status

UM2810STMod+ connector

UM2810 - Rev 1 page 5/21

Page 6: Getting started with the LTE connectivity expansion board

3 X-CUBE-CELLULAR

The X-CUBE-CELLULAR cellular software expansion for STM32Cube consists of a set of libraries and applicationexamples for STM32L4 series MCUs acting as hosts for cellular connectivity applications, driving STMod+compatible cellular-modem add-on boards such as the STEVAL-STMODLTE.X-CUBE-CELLULAR enables connection to the Internet through the cellular network by using the providedbaseline and its main features are:• STMicroelectronics framework for devices based on LPWAN cellular networks• FreeRTOS™ for easy integration into a complete platform• Easy portability across different STM32 microcontroller series thanks to STM32Cube and STM32CubeMX• BSD-like socket APIs for data plane• TCP-UDP/IP connectivity with IP stack on host or modem• Flexible and modular software architecture for easy integration of other modems• PC terminal boot menu for device firmware customization (API key, APN, band)• Connected application examples

UM2810X-CUBE-CELLULAR

UM2810 - Rev 1 page 6/21

Page 7: Getting started with the LTE connectivity expansion board

4 Modem power supply

The STEVAL-STMODLTE expansion board is supplied through the 5V on the STMod+ connector (pins 6 and 15).The modem is enabled by the power enable pin 9. When this pin is driven, a few seconds later, the red LEDswitches on indicating the modem is ready for operation, and the green LED starts flashing signaling the modemis scanning for cellular synchronization. AT command, then, can be sent via UART.If the power supply is not enough, in signaling mode, additional power supply can be provided through the USBconnector.

UM2810Modem power supply

UM2810 - Rev 1 page 7/21

Page 8: Getting started with the LTE connectivity expansion board

5 SIM selection

The STEVAL-STMODLTE offers the possibility of switching between the embedded SIM or a plastic external SIM.You just have to set Sim_select0 pin to:• LOW to select the plastic external SIM• HIGH to select the embedded SIM

UM2810SIM selection

UM2810 - Rev 1 page 8/21

Page 9: Getting started with the LTE connectivity expansion board

6 Modem firmware update

The modem firmware can be updated using the micro USB connector (see Figure 2) and following the procedurebelow.

Step 1. Install the USB drivers of the modem from Quectel.

Step 2. Install Qflash from Quectel and upload the firmware.

Step 3. Press start and reset the modem to download the firmware.

UM2810Modem firmware update

UM2810 - Rev 1 page 9/21

Page 10: Getting started with the LTE connectivity expansion board

7 Bill of materials

Table 3. STEVAL-STMODLTE bill of materials

Item Q.ty Ref. Part/Value Description Manufacturer Order code

1 11

C1, C3,C10,C11,C12,C14,C22,C23,C24,C30,C32

100 nF, 16 V, X7R, ±10%,0402 Capacitor YAGEO CC0402KRX7R7BB104

2 2 C13,C25

100 µF, 6V3, X5R, ±10%,1210 Capacitor

AVX 12106D107KAT2A

Murata GRM32ER60J107ME20L

3 2 C18,C26 470 µF, 6.3 V ±20%, C7343 Capacitor SANYO 6TPB470M

4 1 C19 10 nF, 16 V, X7R, ±10%,0402 Capacitor YAGEO CC0402KRX7R7BB103

5 2 C2, C5 5.1 pF, 50 V, NPO, ±0.25pF, 0402 Capacitor YAGEO CC0402CRNPO9BN5R1

6 1 C20 10 µF, 6V3, X5R, ±10%,0603 Capacitor YAGEO CC0603KRX5R5BB106

7 1 C21 2.2 µF, 10 V, X5R, ±10%,0603 Capacitor

YAGEO CC0603KRX5R6BB225

KEMET C0603C225K8PACTU

8 3C4,C28,C31

10 pF, 50 V,NPO, ±5%,0402 Capacitor YAGEO CC0402JRNPO9BN100

9 9

C6, C7,C8, C9,C15,C16,C17,C27,C29

33 pF, 50 V, ±5%, 0402,COG Capacitor YAGEO CC0402JRNPO9BN330

10 1 CN1 SMA-J-P-H-ST-EM1RF SMAconnector PCBedge

SAMTEC SMA-J-P-H-ST-EM1

11 1 CN2 10104111-0001LF USB, micro ABreceptacle FCI 10104111-0001LF

12 1 CN3 Header 10x2 STMod+ Header 20 pins,2 rows

ATOM PH200210C-07000

SAMTEC TMM-110-01-L-D-RA

13 1 CN4 786463001 Micro SIM socketmicrosim MOLEX 786463001

14 2 D1, D2 MMSZ5V1T1G Zener diode ONSEMICONDUCTOR MMSZ5V1T1G

15 1 LD1 RED LED OSRAM OPTOSEMICONDUCTORS LS Q976-NR-1

16 1 LD2 GREEN LED OSRAM OPTOSEMICONDUCTORS LG Q396-PS-35

UM2810Bill of materials

UM2810 - Rev 1 page 10/21

Page 11: Getting started with the LTE connectivity expansion board

Item Q.ty Ref. Part/Value Description Manufacturer Order code

17 4 Q1, Q2,Q3, Q4 DTC043ZEBTL Buffer transistor ROHM DTC043ZEBTL

18 1 R1 0 R, 0402, ±5% Resistor YAGEO RC0402JR-070RL

19 1 R11 120 K, 0402, ±1% Resistor YAGEO RC0402FR-07120KL

20 1 R12 10 K, 0603, ±1% Resistor YAGEO RC0603FR-0710KL

21 2 R13,R14 2K2, 0402, ±1% Resistor YAGEO RC0402FR-072K2L

22 1 R17 100 K, 0402, ±1% Resistor YAGEO RC0402FR-07100KL orRT0402FRE07100KL

23 1 R18 47 K, 0402, ±1% Resistor YAGEO RC0402FR-0747KL

24 1 R19 470 R, 0402, ±1% Resistor YAGEO RC0402FR-07470RL

25 6

R2, R4,R5, R6,R15,R16

18 R, 0402, ±5% Resistor YAGEO RC0402JR-0718RL

26 2 R20,R21 10 K, 0402, ±1% Resistor YAGEO RC0402FR-0710KL

27 2 R3, R7 15 K, 0402, ±5% Resistor YAGEO RC0402JR-0715KL

28 1 R8 15 K, 0402, ±5% Resistor YAGEO RC0402JR-0715KL

29 2 R9, R10 51 K, 0402, ±1%, Resistor YAGEO RC0402FR-0751KL

30 1 U1 STMPS2171Enhanced singlechannel powerswitch

ST STMPS2171STR

31 1 U10 M24256D-FMN6TP256-Kbit serialI2C busEEPROM

ST M24256D-FMN6TP

32 1 U2 Embedded SIM - -

33 1 U3 BG96 Cellular modem QUECTEL BG96MA-128-SNN

34 2 U4, U5 ESDA6V8AV6 ESD protection WILLSEMI ESDA6V8AV6

35 1 U6 SN74CB3Q3257PW Multiplexerswitch

TEXASINSTRUMENTS SN74CB3Q3257PW

36 1 U7 TXS0108EPWR Bidirectionallevel shifter

TEXASINSTRUMENTS TXS0108EPWR

37 1 U8 MIC29302WU

Adjustable LDO,VOUT = 1V 25-to-25 V,3A,VINmax = 26 V

MICREL MIC29302WU

38 1 U9 LD3985M33R

Ultra low drop-low noiseBiCMOS voltage,regulators lowESR capacitorcompatible

ST LD3985M33R

39 1 Antenna PULSE W1900

UM2810Bill of materials

UM2810 - Rev 1 page 11/21

Page 12: Getting started with the LTE connectivity expansion board

8 Schematic diagrams

Figure 4. STEVAL-STMODLTE circuit schematic (1 of 4)

GND

pwr

sim_GNDsim_CLKsim_Datasim_RST

VDD_EXT

STA

RI

RXDTXDCTSRTS

DTR

GND

RI

RXDDTR

CTSTXD

GND

RST

VBAT

VBAT

GND

5.1pF 5.1pFC5

GND GND

GND GND

NETLIGHT

NETLIGHT

2K2R14

2K2R13

VBAT VBAT

RI

RXDDTR

CTSTXD

VDD_EXT

3

1

2

DTC043ZEBTL Q4

1

3

PCM_CLK_MIC2P4 PCM_SYNC_MIC2N5 PCM_DIN_MIC1P6 PCM_DOUT_MIC1N7USB_VBUS 8

USB_DP 9USB_DM 10

Reserved-SPK1N11

Reserved-SPK1P12 Reserved-LOUDSPKN13 Reserved-LOUDSPKP14

PWRKEY 15PWRDWN_N 16

RESET_N17

18

AP_READY 19STATUS 20

NETLIGHT 21reserved_DBG_RXD22 reserved_DBG_TXD23

24

CLK_OUT 25

Reserved_SIM2_DATA26 Reserved_SIM2_CLK27 Reserved_SIM2_VDD28

VDD_EXT 29

DTR30

31

VBAT_BB 32VBAT_BB 33

UART-RXD34 UART-TXD35 UART-RCS36 UART_RTS37

DCD38 RI39 I2C_SCL40 I2C_SDA41

USIM_PRESENCE 42USIM_VDD 43USIM_RST 44USIM_DATA 45USIM_CLK 46USIM_GND 47

48

49

50

VRTC 51VBAT_RF 52VBAT_RF 53

5 5

565 7

58 59

RF_ANT60

61 62

6364566

67 68 69 70 71 72 73 74

75767778

79 80 81 82

838485868788

89 90 91

9293949596979899

100

101

102

UG96U3

3

1

2

DTC043ZEBTLQ3

3

1

2

DTC043ZEBTLQ2 3

1

2

DTC043ZEBTLQ1

RTSRTS

LG Q396-PS-35LD2 LS Q976-NR-1

LD1

RSTPWRenRST

sim_GNDsim_CLKsim_Datasim_RST

sim_GNDsim_CLK

sim_DATAsim_RST

STASTA

STA

PWRen

PWRen

RF 1

GND2

GND3

GND4 GND5

SMA-J-P-H-ST-EM1

CN1

USB_VBUS

USB_D_PUSB_D_N

VBUS1DM2DP3ID4GND5

SH1SH1SH2SH2EXP1EXP1EXP2EXP2

10104111-0001LF

CN2

100nFC1

GND

USB_VBUS

GND

USB_D_PUSB_D_N

INO

UT

1

GN

D2

EN4

FAU

LT3

GND

VCC

100nFC32

GND

RI

RXDDTR

CTSTXD

VDD_SIM

GND GND

RI

RXDDTR

CTSTXD

24 49 7576777883848586

RTSRTS

RSTPWRenRST

sim_GNDsim_CLKsim_Datasim_RST

sim_GNDsim_CLK

sim_DATAsim_RST

STASTA

PWRen

RF

GND2

GND

GND4 GND5

CN1

USB

_Mic

ro-A

B re

cept

acle

ND

E

R1

C2

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

GN

DG

ND

4 5

26

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

dR

eser

ved

Res

erve

d

STM

PS21

71

UM

2810 - Rev 1

page 12/21

UM

2810Schem

atic diagrams

Page 13: Getting started with the LTE connectivity expansion board

Figure 5. STEVAL-STMODLTE circuit schematic (2 of 4)

VDD_SIM

VDD_SIM1GND

GNDGNDGND

GND GND GND

GND

sim_GND

sim_CLK

sim_DATAsim_RST

sim_GND

GND

Sim_select0Sim_select1

VDD_SIM1

VDD_SIM2

sim_GND

18ohmR4

18ohmR5

18ohmR2

S1

1B1 21B2 31A42B1 52B2 62A7

GN

D8

3A9

3B2 103B1 114A12

4B2 134B1 14OE15

VCC

16 SN74CB3Q3257PWU6

15KR7

33pFC9

33pFC17

33pFC16

15KR3

33pFC8

33pFC6

33pFC7

GND1NC2DATA3NC4 NC 5CLK 6RST 7VSIM 8

ES4620

U2

1

23456

ESDA6V8AV6U4

1

23456

ESDA6V8AV6U5

100nFC10

100nFC3

VDD_SIM2

VDD_SIM1

VDD_SIM2

sim_GND

sim_GND

3V3

15KR8

3V3

GND

VDDC1RSTC2CLKC3GNDC5NCC6DATAC7

GN

D1

GN

D2

GN

D3

GN

D4

GN

D5

GN

D6

X1

7X

28

786463001CN4socket_microsim_786463001

18ohmR6

18ohmR1618ohmR15

VDD_SIM1GND

35

VDD_SIM2

UM

2810 - Rev 1

page 13/21

UM

2810Schem

atic diagrams

Page 14: Getting started with the LTE connectivity expansion board

Figure 6. STEVAL-STMODLTE circuit schematic (3 of 4)VCC

STmod+

sim_CLK

sim_DATA

GNDGND10K

R12120KR11

GND

GND

VDD_EXT

100nF

C12

100nF

C11GND GND

VDD_EXT

RTSRXD

CTSTXD

RI

RTSRXD

DTR

CTSTXD

STATXDS

RXDS

CTSS

RTSS

VDD_EXT

E01E12E23VSS4 SDA 5SCL 6WC 7VCC 8

M24128DWMN

U10

A11 VCC

A2

A23A34A45A56A67A78A89

OE10

GN

D11

B8 12B7 13B6 14B5 15B4 16B3 17B2 18B1 20VCC

B19

TXS0108EPWRU7

1

3

5

7

9

11

13

15

17

19

2

4

6

8

10

12

14

16

18

20

TMM-110-01-L-D-RA

CN3

51KR9 51KR10

GND

GND

STMOD+_IO7STMOD+_IO10

RIS

sim_RST

DTRS

3V3

3V33V3

3V3 3V3

VCC

Sim_select0Sim_select1 STMOD+_IO8

STMOD+_IO12STMOD+_IO13

STMOD+_IO17STMOD+_IO18STMOD+_IO19STMOD+_IO20

STMOD+_IO14

STMOD+_IO9

STMOD+_IO4

RIS

DTRS

STA

RTSS

RXDS

STAS

CTSS

TXDS

DTRRI

PWRen

RST

STMOD+_IO7

STMOD+_IO10

10KR20

10KR21

STAS

GND

VDD_EXT

CTSTXD

RXD

CTSTXD

STA 789

STA

UM

2810 - Rev 1

page 14/21

UM

2810Schem

atic diagrams

Page 15: Getting started with the LTE connectivity expansion board

Figure 7. STEVAL-STMODLTE circuit schematic (4 of 4)

47KR18

100KR17

470RR19

10pFC31

GNDGND

VCC VBAT

10pFC4

GND

GND

GND

VBATVBAT

VBAT

33pFC27

33pFC15

33pFC29

470uFC18

470uFC26

10pFC28

100nFC14

100nFC30

100nFC23

51

2

GND3

4

BYPASSINH

Vin Vout

LD3985M33RU9

10uFC20

100nFC22

10nFC19

2.2uFC21

100nFC24

GND GND GNDGNDGND GND

VCC 3V3

IN2

EN1 ADJ 5

OUT 4

GND

3

EPA

6

MIC29302WUU8

GND

12

D1MMSZ5V1T1G

12

D2MMSZ5V1T1G

100uFC25

100uFC13

GND

UM

2810 - Rev 1

page 15/21

UM

2810Schem

atic diagrams

Page 16: Getting started with the LTE connectivity expansion board

9 Regulatory information

Formal Notice Required by the U.S. Federal Communications Commission

FCC NOTICEThis device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) Thisdevice may not cause harmful interference, and (2) this device must accept any interference received, includinginterference that may cause undesired operation.Changes or modifications not expressly approved by the manufacturer could void the user’s authority to operatethe equipment.

Formal Product Notice Required by Industry Canada

Innovation, Science and Economic Development Canada ComplianceThis device complies with Innovation, Science and Economic Development RSS standards. Operation is subjectto the following two conditions: (1) this device may not cause harmful interference, and (2) this devicemust accept any interference received, including interference that may cause undesired operation. Changesor modifications not expressly approved by the manufacturer could void the user’s authority to operate theequipment.Conformité à Innovation, Sciences et Développement Économique CanadaCet appareil est conforme aux normes RSS d'Innovation, Science et Développement économique. L'utilisationest soumise aux deux conditions suivantes: (1) cet appareil ne doit pas causer d'interférences nuisibles, et (2)cet appareil doit accepter de recevoir tous les types d’interférence, y comprises les interférences susceptiblesd'entraîner un fonctionnement indésirable. Les changements ou les modifications non expressément approuvéspar le fabricant pourraient annuler le permis d'utiliser l'équipement.

UM2810Regulatory information

UM2810 - Rev 1 page 16/21

Page 17: Getting started with the LTE connectivity expansion board

Revision history

Table 4. Document revision history

Date Revision Changes

01-Dec-2020 1 Initial release.

UM2810

UM2810 - Rev 1 page 17/21

Page 18: Getting started with the LTE connectivity expansion board

Contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2 Board components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2.1 STMod+ connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 X-CUBE-CELLULAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

4 Modem power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

5 SIM selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

6 Modem firmware update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

7 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

8 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

9 Regulatory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

UM2810Contents

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List of figuresFigure 1. STEVAL-STMODLTE expansion board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Figure 2. STEVAL-STMODLTE expansion board main components - top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Figure 3. STEVAL-STMODLTE expansion board main components - bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Figure 4. STEVAL-STMODLTE circuit schematic (1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 5. STEVAL-STMODLTE circuit schematic (2 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Figure 6. STEVAL-STMODLTE circuit schematic (3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Figure 7. STEVAL-STMODLTE circuit schematic (4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

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List of tablesTable 1. Antenna electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Table 2. STMod+ connector pin-out details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Table 3. STEVAL-STMODLTE bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Table 4. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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