ST STM32303C-EVAL User Manual

February 2013 Doc ID 023581 Rev 2 1/58

UM1567

User manual

STM32303C-EVAL evaluation board

Introduction

The STM32303C-EVAL evaluation board has been designed as a complete demonstration
and development platform for STMicroelectronic's ARM cortex-M4 core-based
STM32F303VCT6 microcontrollers. It features two I

2

Cs, three SPIs, five USARTs, one
CAN, four 12-bit ADCs, two 12-bit DACs, internal 40-KByte Data SRAM, 8-KByte Program
SRAM and 256-KByte Flash, Touch sensing, USB FS, JTAG debugging support. This
evaluation board can be used as the reference design for user application development but
it is not considered as a final application.

The full range of hardware features on the board help you to evaluate all peripherals (USB
FS, USART, Audio DAC and ADC, TFT color LCD, IrDA, LDR, MicroSD card, Motor control
connectors, Humidity Sensor, High Brightness LED, CAN, IR, EEPROM, Touch Sensing
Buttons & Temperature Sensor… etc.) and to develop your own applications. Extension
headers make it possible to easily connect a daughter board or a wrapping board for your
specific application.

An ST-LINK/V2 is integrated on the board as an embedded in-circuit debugger and
programmer for the STM32 MCU.

Figure 1. STM32303C-EVAL evaluation board

Ta bl e 1 lists the evaluation tools concerned by this user manual.

Table 1. Applicable tools

Type Applicable tools

Evaluation tools STM32303C-EVAL

www.st.com

Contents UM1567

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Contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2 Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.4 Delivery recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2 Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1 Development and debug support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.3 Clock source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4 Reset source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.5 Boot option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.6 Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.7 USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.8 RS232, RS-485 and IrDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.9 Touch-sensing buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.10 MicroSD card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.11 Serial EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.12 RF EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.13 EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.14 CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.15 IR LED and IR receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.16 High brightness LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.17 Humidity sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.18 Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.19 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.20 Display and input devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.21 Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.1 RF EEPROM daughter board connector (CN1) . . . . . . . . . . . . . . . . . . . . 26

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3.2 Motor control connector (CN2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.3 CAN D-type 9-pin male connector (CN3) . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.4 Motor control connector (CN4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.5 ST-LINK/V2 USB type-B connector (CN5) . . . . . . . . . . . . . . . . . . . . . . . . 30

3.6 Daughter board extension connectors (CN6 and CN7) . . . . . . . . . . . . . . 30

3.7 RS232 and RS485 connector (CN8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3.8 ETM Trace debugging connector (CN9) . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.9 JTAG/SWD connector (CN10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.10 Audio jack (CN11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.11 User USB type-B connector (CN12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.12 ST-LINK/V2 programming connector (CN13) . . . . . . . . . . . . . . . . . . . . . . 36

3.13 Power connector (CN14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.14 TFT LCD connector (CN15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.15 MicroSD connector (CN16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

4 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Appendix A STM32303C-EVAL I/O assignment . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Appendix B Mechanical dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

List of tables UM1567

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List of tables

Table 1. Applicable tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Third-party support of ST-LINK/V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 3. Power supply jumper settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 4. Power mode related jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 5. Low voltage limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 6. 32 kHz crystal X1 related solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 7. 8 MHz crystal X2 related solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 8. Boot-related switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 9. Boot0-related jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 10. Audio-related jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 11. RS232, RS485 and IrDA related jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 12. RS485 related solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 13. Touch-sensing button related solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 14. EEPROM Related Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 15. CAN related jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 16. Humidity sensor related jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 17. Temperature sensor related jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 18. LCD modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 19. Motor control related jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 20. Motor control related switches and solder bridges in OAM position . . . . . . . . . . . . . . . . . . 24

Table 21. Motor control related switches and solder bridges in PGM position . . . . . . . . . . . . . . . . . . 25

Table 22. RF EEPROM daughter board connector (CN1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 23. Motor control 1 connector (CN2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 24. CAN D-type 9-pin male connector (CN3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 25. Motor control 2 connector (CN4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 26. USB type-B connector (CN5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 27. Daughter board extension connector (CN6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 28. Daughter board extension connector (CN7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 29. RS232 and RS485 connector (CN8) with ISP support . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 30. ETM trace debugging connector (CN9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Table 31. JTAG/SWD debugging connector CN10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 32. USB type-B connector (CN12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 33. MicroSD connector (CN16). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Table 34. STM32303C-EVAL I/O assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Table 35. Mechanical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Table 36. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

UM1567 List of figures

Doc ID 023581 Rev 2 5/58

List of figures

Figure 1. STM32303C-EVAL evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 3. STM32303C-EVAL evaluation board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 4. STM32303C-EVAL comparator features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 5. Resistor positions on the PCB board: even number removing . . . . . . . . . . . . . . . . . . . . . . 22

Figure 6. Resistor positions on the PCB board: odd number mounting . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 7. RF EEPROM daughter board connector (CN1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 8. Motor control 1 connector (CN2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 9. CAN D-type 9-pin male connector (CN3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 10. Motor control 2 connector (CN4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 11. USB type-B connector (CN5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 12. RS232 and RS485 connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 13. ETM Trace debugging connector (CN9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 14. JTAG/SWD debugging connector (CN10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 15. USB type-B connector (CN12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 16. Power supply connector (CN14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 17. MicroSD connector (CN16). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 18. STM32330C-EVAL board (MB1019) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 19. STM32330C-EVAL MCU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Figure 20. STM32330C-EVAL Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 21. STM32330C-EVAL RS232, RS485 and IrDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Figure 22. STM32330C-EVAL Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Figure 23. STM32330C-EVAL Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Figure 24. STM32330C-EVAL CAN, IR, High-brightness LED and Humidity sensor . . . . . . . . . . . . . 45

Figure 25. STM32330C-EVAL LCD, SDCard and Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Figure 26. STM32330C-EVAL I2C peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Figure 27. STM32330C-EVAL peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 28. STM32330C-EVAL ST-LINK (JTAG only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Figure 29. STM32330C-EVAL JTAG and Trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Figure 30. TM32330C-EVAL touch sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure 31. Color LCD daughter board (MB895) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 32. Mechanical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Overview UM1567

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1 Overview

1.1 Features

■ Four 5 V power supply options: Power jack, ST-LINK/V2 USB connector, User USB

connector or daughter board

■ I

2

S Audio DAC, stereo audio jack which supports headset with microphone

■ 2-Gbyte or more SPI interface MicroSD card

■ I

2

C compatible serial interface temperature sensor, EEPROM and RF EEPROM

■ RS232 and RS485 communication

■ IrDA transceiver

■ JTAG/SWD and ETM trace debug support, ST-LINK/V2 embedded

■ 1-Mbit SPI serial Flash memory

■ 240x320 TFT color LCD connected to the SPI interface

■ Joystick with 4-direction control and selector

■ Reset, Tamper or Key button

■ 4-color user LEDs and high brightness LED

■ Humidity sensor

■ Extension connectors for daughter board or wrapping board

■ MCU voltage choice: 3.3 V or adjustable from 2.0 V to 3.6 V

■ USB FS connector

■ Touch-sensing buttons

■ RTC with backup battery

■ CAN2.0A/B compliant connection

■ Light-dependent resistor (LDR)

■ IR LED and receiver

■ Potentiometer

■ 2 motor control connectors

1.2 Demonstration software

The demonstration software is preloaded in the board's Flash memory for an easy
demonstration of the device peripherals in standalone mode. For more information and to
download the latest version available, please refer to the STM32303C-EVAL demonstration
software available on www.st.com.

1.3 Order code

To order the STM32F303VCT6 evaluation board, use the STM32303C-EVAL order code.

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1.4 Delivery recommendations

Before using the board for the first time, please verify that nothing was damaged during
shipment and that no components are unplugged or lost.

When the board is extracted from its plastic bag, please check that no component remains
in the bag.

The main components to verify are:

1. The 8 MHz crystal (X2) which may have been removed from its socket by a shock.

2. The MicroSD card which may have been ejected from the CN16 connector (right side
of the board).

3. The dual-interface EEPROM board (ANT7-M24LR-A) which may have been unplugged
from the CN1 connector (top left corner of the board).

For all information concerning the version of the MCU used on the board, its specification
and possible related limitations, please visit the ST web site to download the relevant data
sheet and erratasheet.

Warning: This equipment contains parts (principally an LCD), subject to

be damaged by electrostatic discharge (ESD). Before touching
the LCD or its connector (CN1 on MB895), use one of these
following ESD precautionary procedures:

Wear a ground strap. The function of such strap is to rapidly
and safely dissipate personnel static charge to the ground.

Touch the ground before all other nets or components on
board. The easiest way to proceed is to touch with a finger the
shield available on DB9 connectors (CN3 & CN8), USB
connector (CN5) or uSD card connector (CN16).

Hardware layout and configuration UM1567

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2 Hardware layout and configuration

The STM32303C-EVAL evaluation board has been designed around the STM32F303VCT6
microcontroller (100-pin TQFP package). The hardware block diagram in Figure 2 illustrates
the connection between the STM32F303VCT6 microcontroller and its peripherals (color
LCD, touch sensing buttons, USB FS connector, motor control connectors, temperature
sensor, USART, IrDA, Audio, EEPROM,RF EEPROM, MicroSD card and embedded
ST-LINK). Figure 3 helps to locate these features on the actual evaluation board.

Figure 2. Hardware block diagram

Note: ‘o’ = I/O shared with Motor Control.

GPIO

Comparator

TS

controller

USB FS

I2C

USART1

JTAG

Potentiometer

Joystick

LEDs

Key

button

Photo-R

Touch Sensing

Buttons

USB

connector

Temperature

Sensor

EEPROM

RF EEPROM

connector

Voltage

translator

RS232

transceiver

IrDA

transceiver

RS232/RS485

connector

TFT color

LCD

SPI2

MicroSD

card

I2S

Audio

Codec &

Amplifier

Embedded

ST -LINK/V2

USB TypeB

connector

JTAG & Trace

connector

2.0V to 3.6V
adjustable

regulator

3.3V

regulator

Extension

connector for

GPIOs

Microphone

STM32F303VCT6

EEPROM

High current

LEDs

Humidity

Sensor

TIM

CAN driver

& Connector

CAN

IR LED &

IR receiver

IRTIM
PWM

Voltage

translator

Motor Control

connector 1

Motor Control

connector 2

Comparator

Comparator

PWM

PWM

RS485

transceiver

Headset Jack

MS30710V1

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Figure 3. STM32303C-EVAL evaluation board layout

..

Hardware layout and configuration UM1567

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2.1 Development and debug support

Version 2 of ST-LINK, called ST-LINK/V2, is embedded on the board. This tool allows
program loading and debugging of the STM32 on board using a JTAG or SWD interface.
The third-party debug tools are also supported by the JTAG/SWD connector, CN10, or the
ETM Trace connector, CN9.

A specific driver needs to be installed on your PC for communication with embedded ST­LINK/V2.The install shield called ST-LINK_V2_USBdriver.exe is available at
www.st.com/stlinkv2.

Third-party toolchains, Atollic TrueSTUDIO, KEIL MDK-ARM, IAR EWARM and Tasking VX­Toolset support ST-LINK/V2 according to Ta bl e 2.

The embedded ST-LINK/V2 is connected to the PC via a standard USB cable connected to
connector CN5.The bicolor LED LD8 (COM) advises on the status of the communication as
follows:

● Slow blinking red/off: at power on before USB init

● Fast blinking red/off: after the first correct communication between PC and ST-Link/V2

(enumeration)

● Red LED on: when the initialization between PC and ST-LINK/V2 has been successful

● Green LED on: after a successful target communication initialization

● Blinking red/green: during communication with target

● Red on: communication finished and OK

● Orange on: communication failure

Note: The board can be powered via CN5 (Embedded ST/LINK/V2 USB connector) even if an

external tool is connected to CN9 (ETM Trace connector) or CN10 (External JTAG & SWD
connector).

R111 needs to be removed when using ETM 4-bit function. In this case, the key button does
not work.

Table 2. Third-party support of ST-LINK/V2

Third party

Toolchain Version

Atollic TrueSTUDIO 2.1
IAR EWARM 6.20
Keil MDK-ARM 4.20
TASKING

VX-toolset for ARM Cortex-M 4.0.1

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2.2 Power supply

The STM32303C-EVAL evaluation board has been designed to be powered by 5 V DC
power supply and to be protected by PolyZen from wrong power plug-in event. The
evaluation board can be configured to use any of the four following sources of power supply:

● 5 V DC power adapter connected to CN14, the power jack on the board (Power supply

unit (PSU) on silkscreen of JP14). The external power supply is not provided with the
board.

● 5 V DC power with 500 mA limitation from CN5, the USB type B connector of ST-

LINK/V2 (USB 5 V power source on silkscreen of JP14 ( STlk)).

● 5V DC power with 500mA limitation from CN12, the USB type B connector (USB 5V

power source on silkscreen of JP14 (USB)).

● 5V DC power from CN6 & CN7, the extension connectors for daughter board (daughter

board power source on silkscreen of JP14 (D5V)).

The power s4upply is configured by setting the related jumpers JP14, JP15, JP16 and JP17
as described in Ta bl e 3 .

Table 3. Power supply jumper settings

Jumper Description Setting

JP14

STlk

PSU

U5V

D5V

JP14 is used to select one of the four possible power supply resources.
For power supply from the daughter board connectors (CN6 and CN7) to

STM32303C-EVAL only, JP14 is set as shown to the right:

For power supply from USB (CN12) to STM32303C-EVAL only, JP14 is set as
shown to the right:

For power supply jack (CN14) to the STM32303C-EVAL only, JP14 is set as
shown to the right:

For power supply from USB connector of ST-LINK/V2 (CN5) to STM32303C ­EVAL only, JP14 is set as shown to the right (default setting):

For power supply from power supply jack (CN14) to both STM32303C -EVAL and
daughter board connected on CN6 and CN7, JP14 is set as shown to the right
(the daughter board must not have its own power supply connected):

JP16

Vbat is connected to the battery when JP16 is set as shown to the right:

Vbat is connected to VDD power when JP16 is set as shown to the right (default
setting):

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Note: Though technically adjustable from 2.0 V to 3.6 V, VDD has been designed to adjust from

2.1 V to 3.5 V considering some peripheral component specifications.

LED LD8 is lit when the STM32303C-EVAL evaluation board is correctly powered by 5 V.
A total of three power modes are supported on the board, and can be configured by setting

the related jumpers JP15 and JP17 as described in Tab le 4 and the Note below.

● Mode1: VDD and VDDA were connected together and powered by fixed 3.3 V.

● Mode2: VDD and VDDA were connected together and powered by an adjustable

voltage from 2.0 V to 3.6 V.

● Mode3: VDD is powered by an adjustable voltage from 2.0 V to 3.6 V while VDDA is

powered by fixed 3.3 V.

JP15

VDD is connected to fixed +3.3 V DC power when JP15 is set as shown to the
right (default setting):

VDD is connected to adjustable DC power from 2.0 V to 3.6 V when JP15 is set
as shown to the right:

JP17

VDDA power is connected to VDD when JP17 is set as shown to the right (default
setting):

VDDA power is connected to fixed +3.3 V DC power when JP17 is set as shown
to the right:

Table 3. Power supply jumper settings (continued)

Jumper Description Setting

Table 4. Power mode related jumpers

Power mode

Power mode configuration

MCU I

DD

measurement

JP15 JP17

Mode1

OK

NOT allowed

Mode2 OK

Mode3 NOT allowed

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Note: MCU IDD measurement can be done by the current meter which is mounted on JP12 when it

is open.
JP11 must be open (disconnect VDDA from all analog power VDD_ANA connected to the

analog circuit) for MCU I

DD

measurement.

Due to the characters of some peripheral components' specification, the low voltage
limitations related to the operating voltage of the peripherals (a component will not work
correctly when the power level is under the low voltage limitation) are shown in Ta bl e 5 .

Note: When an external DC 5V power supply is used to power the STM32303C-EVAL, it needs to

be connected to CN14 after verifying the correct polarity as explained in Section 3.13.

Caution: RISK OF EXPLOSION IF THE BATTERY IS REPLACED BY AN INCORRECT TYPE.

DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.

2.3 Clock source

Two clock sources are available on the STM32303C-EVAL evaluation board for
STM32F303VCT6 and RTC embedded:

● X1, 32 kHz crystal for embedded RTC

● X2, 8 MHz crystal with socket for the STM32F303VCT6 microcontroller; it can be

removed from the socket when an internal RC clock is used.

Table 5. Low voltage limitation

Peripheral Component I/O name Low voltage limitation

USB CN12 USB 3V

CAN CN3 CAN 3V

Temperature sensor U1 I2C2 2.25V

Table 6. 32 kHz crystal X1 related solder bridges

Solder bridge Description

SB12

PC14 is connected to the 32 KHz crystal when SB12 is open (default setting).

PC14 is connected to the extension connector CN6 when SB12 is closed. In such
a case, R196 must be removed to avoid disturbance due to the 32 KHz quartz.

SB13

PC15 is connected to the 32 KHz crystal when SB13 is open (default setting).

PC15 is connected to the extension connector CN6 when SB13 is closed. In such
a case, R197 must be removed to avoid disturbance due to the 32 KHz quartz.

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2.4 Reset source

The reset signal of the STM32303C-EVAL evaluation board is low active and the reset
sources include:

● Reset button (B1)

● Debugging tools from JTAG/SWD connector (CN10) and ETM trace connector (CN9)

● Daughter board from CN7

● Embedded ST-LINK/V2

● RS232 connector (CN8) for ISP

Note: The JP10 jumper must be closed for RESET handled by pin8 of RS232 connector, CN8

(CTS signal).

2.5 Boot option

The STM32303C-EVAL evaluation board can boot from:

● the embedded user Flash

● the system memory with boot loader for ISP

● the embedded SRAM for debugging

The boot option is configured by setting switch SW1 (BOOT0) and bit 12 of USER OPTION
BYTES (BOOT1) in Small Information block (SIF). BOOT0 can also be configured via the
RS232 connector, CN8.

Table 7. 8 MHz crystal X2 related solder bridges

Solder bridge Description

SB14

PF0 is connected to the 8 MHz crystal when SB14 is open (default setting).

PF0 is connected to the extension connector CN7 when SB14 is closed. In such a
case, C51 and X2 must be removed to avoid disturbance due to the 8 MHz quartz.

SB15

PF1 is connected to the 8 MHz crystal when SB15 is open (default setting).

PF1 is connected to the extension connector CN7 when SB15 is closed. In such a
case, R205 must be removed.

Table 8. Boot-related switch

Switch

configuration

bit 12 of USER OPTION

BYTES

STM32303C-EVAL boot

0 <----> 1

X

From the user Flash when SW1 is set as
shown to the left (default setting)

0 <----> 1

0

From the embedded SRAM when SW1 and
bit12 in USER OPTION BYTES are set as
shown to the left.

0 <----> 1

1

From the system memory when SW1 and
bit12 in USER OPTION BYTES are set as
shown to the left.

SW1

SW1

SW1

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2.6 Audio

The STM32303C-EVAL evaluation board supports stereo audio play and microphone
recording by an external headset connected on audio jack CN11. An audio DAC CS42L52 is
connected to the I2S port of the STM32F303VCT6 microcontroller. The microphone on
headset or microphone which is reserved on board (U26, default unmounted) are connected
to ADC of CS42L52. The CS42L52 can be configured via I2C2 and be driven by either
I2S_MCK at PA9 or the external I2S clock mode supported by an external PLL (U12).

Note: Please keep VDD to 3.3 V (Power mode 1 in Section 2.2) when using external PLL CS2200.

The I2C communication depends on JP5 and JP6 jumper setting.

The I2C address of CS42L52 is 0b1001010, and that of External PLL CS2200 is
0b1001110.

Table 9. Boot0-related jumper

Jumper Description

JP9

Bootloader_BOOT0 is managed by pin 6 of connector CN8 (RS232 DSR
signal) when JP9 is closed. This configuration is only used for the boot
loader application.

Default Setting: Not fitted

Table 10. Audio-related jumpers

Jumper Description Setting

JP5

PA10 is used as I2C standard mode and it is connected to
I2C2_SDA signal on Audio DAC, Audio external PLL,
temperature sensor and RF EEPROM connector when JP5 is
set as shown to the right (default setting):

PA10 is used as I2C fast mode and it is connected to
I2C2_SDA_F signal on EEPROM when JP5 is set as shown to
the right:

JP6

PF6 is used as I2C standard mode and it is connected to
I2C2_SCL signal on Audio DAC, Audio external PLL,
temperature sensor and RF EEPROM connector when JP6 is
set as shown to the right (default setting):

PF6 is used as I2C fast mode and it is connected to
I2C2_SCL_F signal on EEPROM when JP6 is set as shown to
the right:

JP18

PA9 is connected to I2S_MCK signal on CS42L52 when JP18
is set as shown to the right (default setting)

PA9 is connected to IR_IN signal on TSOP34836 when JP18
is set as shown to the right:

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2.7 USB

The STM32303C-EVAL evaluation board supports USB2.0 compliant full speed
communication via a USB type B connector (CN12). The evaluation board can be powered
by this USB connection at 5 V DC with 500 mA current.

A USB disconnection simulation can be implemented by controlling the 1.5 K pull-up resistor
on the USB+ line and by detecting the 5 V power on the USB connector (CN12) via a
resistor connected to PB8.

USB will work properly when VDD > 3 V.

2.8 RS232, RS-485 and IrDA

The RS232, RS-485 and IrDA communication is supported by D-type 9-pin RS232/RS-485
connectors (CN8) and IrDA transceiver (U10) which is connected to USART1 of
STM32F303VCT6 on the STM32303C-EVAL evaluation board. Bootloader_RESET &
Bootloader_BOOT0 signals are added on the RS232 connector (CN8) for ISP support.

The RS485 communication is supported by the RS485 transceiver, ST3485EBDR, which is
connected to pin4 and pin9 of D-type 9-pin connectors CN8 (share the same connector with
USART1).

Table 11. RS232, RS485 and IrDA related jumpers

Jumper Description Setting

RS232_RX

RS485_RX

IRDA_RX

JP13

RS232_RX is connected to the RS232 transceiver
and the RS232 communication is enabled when JP13
is set as shown to the right (default setting):

RS485_RX is connected to the RS485 transceiver
and the RS485 communication is enabled when JP13
is set as shown to the right:

IrDA_RX is connected to the IrDA transceiver and the
IrDA communication is enabled when JP13 is set as
shown to the right:

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2.9 Touch-sensing buttons

The STM32303C-EVAL evaluation board supports two touch-sensing buttons based on the
charge transfer technology.

Table 12. RS485 related solder bridges

Jumper Description

SB17, SB18

The external failsafe biasing is enabled when solder bridges SB17 and
SB18 are closed.

Default setting: Not fitted

SB16

The bus termination is enabled when solder bridge SB16 is closed.
Default setting: Not fitted.

Table 13. Touch-sensing button related solder bridges

Solder bridge Description

SB6

PD13 is connected to the touch button when SB6 is open.
(Default setting)

PD13 is connected to the extension connector CN7 when SB6 is closed. In
such a case, R104 must be removed to avoid disturbance due to the touch
button.

SB7

PD15 is connected to the touch button when SB7 is open.
(Default setting)

PD15 is connected to the extension connector CN7 when SB7 is closed. In
such a case, R102 must be removed to avoid disturbance due to the touch
button.

SB8

PD12 is connected to the sampling capacitor when SB8 is open.
(Default setting)

PD12 is connected to the extension connector CN7 when SB8 is closed. In
such a case, C52 must be removed to avoid disturbance due to the
capacitor.

SB9

PB12 is connected to the shield when SB9 is open.
(Default setting)

PB12 is connected to the extension connector CN6 when SB9 is closed. In
such a case, R103 must be removed to avoid disturbance due to the
shield.

SB11

PB11 is connected to the shield charge capacitor when SB11 is open.
(Default setting)

PB11 is connected to the extension connector CN6 when SB11 is closed.
In such a case, R137 must be removed to avoid disturbance due to the
capacitor.

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2.10 MicroSD card

The 2 GB (or more) MicroSD card connected to the SPI2 port (Shared with color LCD and
Serial EEPROM) of STM32F303VCT6 is available on the board. The MicroSD card
detection is managed by the standard I/O port, PC6.

2.11 Serial EEPROM

A 1 Mbit (M95M01-R) serial EEPROM connected to the SPI2 port (shared with color LCD
and MicroSD card) of STM32F303VCT6, serial Flash Chip select is managed by I/O pin
PD7.

2.12 RF EEPROM

The RF EEPROM daughter board, ANT7-M24LR-A, is mounted on CN1 to
STM32F303VCT6 via the I2C2 bus.

The I2C address of RF EEPROM is 0b1010000.
The I2C communication depends on JP5 and JP6 jumper setting, as shown in Ta bl e 10 .

2.13 EEPROM

To fit the fast mode requirements, a 1 Mbit EEPROM, M24M01-HR, is directly connected to
the I2C2 bus of STM32F303VCT6 by setting JP5 and JP6 jumpers, as shown in Ta bl e 1 0.

Table 14. EEPROM Related Jumpers

Jumper Description

JP8

The EEPROM is in Write protection mode when JP8 is closed.
Default setting: Not fitted

JP5,JP6 Refer to Ta bl e 1 0

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2.14 CAN

The STM32303C-EVAL evaluation board supports one channel of a CAN2.0A/B compliant
bus communication based on the 3.3V CAN transceiver. The high-speed mode, standby
mode and slope control mode are available and can be selected by setting JP4.

CAN will work properly when VDD > 3 V.

2.15 IR LED and IR receiver

The IR receiver, TSOP34836, is connected to PA9 of STM32F303VCT6 and the IR LED is
driven by PB9 through transistors T4 and T5 on the board. The IR receiver depends on
JP18 jumper setting, as shown in Tab le 1 0 .

Note: The IR LED may be driven by PB9 directly when SB19 is closed and R281 is removed.

2.16 High brightness LED

An amber high brightness LED and its power control circuits are on the STM32303C-EVAL
board. The brightness can be adjusted by the PWM signal from STM32F303VCT6 through
PE13. The current on the LED can be monitored by the STM32F303 thanks to the voltage
measured on PD14, which corresponds to current through R261 (10 ohm).

2.17 Humidity sensor

A humidity sensor, HS1101LF, is on the STM32303C-EVAL board. The charge control signal
is connected to the timer in STM32F303VCT6 through PC8, and the measured result of
HS1101LF is connected with PB0.

Note: Please keep VDDA =V DDIO during the measurement.

A 180 pF 1% capacitor, C121, is used to calibrate the humidity sensor by setting JP19.

Table 15. CAN related jumpers

Jumper Description Setting

JP4

The CAN transceiver is working in standby mode when JP4
is set as shown to the right:

The CAN transceiver is working in high-speed mode when
JP4 is set as shown to the right: (default setting)

The CAN transceiver is working in slope control mode
when JP4 is open.

JP3

The CAN terminal resistor is enabled when JP3 is fitted.
Default setting: Not fitted

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2.18 Comparator

VDD_ANA is divided by the resistor bridge of LDR VT9ON1 & 8.2K resistor and connected
to PA0 (COM7_IN+/COM1_IN-/ADC IN1). VDD_ANA is also divided by the RV2
potentiometer and connected to PC1 (COM7_IN+/ADC12).

Figure 4. STM32303C-EVAL comparator features

2.19 Temperature sensor

A temperature sensor, STTS751, is connected to the I2C2 bus of STM32F303VCT6 by
setting JP5 and JP6 jumpers, as shown in Tab l e 1 0.

Table 16. Humidity sensor related jumper

Jumper Description Setting

JP19

A 180 pF 1% capacitor is connected for calibration when
JP19 is set, as shown to the right:

A humidity sensor is connected to measure the humidity
when JP19 is set, as shown to the right: (default setting)

MS30712V1

LDR

0

VDD_ANA

GND

0

VDD_ANA

GND

+

-

-

+

GPCOMP1_IN-

GPCOMP1_IN+

GPCOMP7_IN+

GPCOMP7_IN-

OUT

OUT

ADC1

ADC12

PA0

PC1

GPCOMP1

GPCOMP7

Table 17. Temperature sensor related jumpers

Jumper Description

JP1

An SMB signal connects to the temperature sensor event signal when JP1
is closed.

Default setting: Not fitted

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The I2C address of the temperature sensor is 0b1001000.
STTS751 will work properly when VDD > 2.25V.

Note: The temperature result measured from PT100 would be a little higher than the ambient

temperature due to the power dissipation of components on the board.

2.20 Display and input devices

The 240x320 TFT color LCD connected to the SPI2 port of STM32F303VCT6 (shared with
the MicroSDcard and Serial EEPROM) and four general-purpose color LEDs (LD1, LD2,
LD3, LD4) are available as display devices. The 4-direction joystick (U27) with the selection
and key button (B2) are available as input devices.

The LCD can be enabled by the chip select signal PE0; this signal should be set as an
open-drain output pin in STM32F303VCT6. All joystick signals should be set as a pull-down
input pin in STM32F303VCT6.

Note: The bi-directional voltage translator is implemented on the SPI MOSI signal between

STM32F303VCT6 and the LCD to support the 3-wire serial interface of the
AM240320LGTNQW-01H LCD panel. The direction of this voltage translator is controlled by
the PE14 I/O (the PB15 I/O is used as a MOSI when PE14 is high, or as a MISO when PE14
is low).

Table 18. LCD modules

TFT LCD CN15

Pin on CN15 Description Pin connection

1CSPE0

2SCLPF9

3 SDI PB15

4RS-

5WR-

6RD -

7 SDO PB14

8 RESET RESET#

9 VDD 3.3V

10 VCI 3.3V

11 GND GND

12 GND GND

13 BL_VDD 5V

14 BL_Control 5V

15 BL_GND GND

16 BL_GND GND

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2.21 Motor control

The STM32303C-EVAL evaluation board supports 2 inductor motor controls via 34-pin
connectors CN2 and CN4, which provide all required control and feedback signals to and
from the motor power-driving board. Available signals on these connectors include
emergency stop, motor speed, 3-phase motor current, bus voltage, Heatsink temperature
coming from the motor driving board and 6 channels of PWM control signal going to the
motor driving circuit.

Some PCB reworks are needed for motor control applications to disconnect peripherals
which share I/Os with motor control connectors and connect these I/Os to motor control
connectors.

To configure the board for motor control application, please follow the procedure below:

1. Remove even number resistors from R1 to R58 (R2, R4, R6….R56, R58 except R12,
R22). The resistor positions on the PCB board are shown in Figure 5:

Figure 5. Resistor positions on the PCB board: even number removing

R52

R58

R50

R38

R36

R16

R18

R2

R14

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2. Mount odd number resistors from R1 to R58 (R1, R3….R55, R57 except R11 which is
mounted by default) with a 0-ohm resistor. The resistor positions on the PCB board are
shown in Figure 6:

Figure 6. Resistor positions on the PCB board: odd number mounting

Table 19. Motor control related jumpers

Jumper Description

JP2

JP2 should be kept open when the encoder signal is from pin31 of the
motor control connector CN2; it should be kept closed when the analog
signal is from pin31 of CN2 for a special motor.

Default setting: Not fitted

JP7

JP7 should be kept open when the encoder signal is from pin31 of the
motor control connector CN4; it should be kept closed when the analog
signal is from pin31 of CN4 for a special motor.

Default setting: Not fitted

R51

R57

R49

R37

R35

R15

R17

R1 R13

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Table 20. Motor control related switches and solder bridges in OAM position

OAM position Other conditions Description

OAM1

R113, R116 mounted

SB2 open

MC1_CurrentA+ connect to OPAMP1_IN+(PA1)
MC1_CurrentB+ connect to OPAMP2_IN1+(PA7)

R113, R116 unmounted

SB2 closed

MC1_CurrentB+ connect to OPAMP1_IN+(PA1)

3SA position

MC1_CurrentC+ connect to OPAMP2_IN2+(PD14)

3SA position

MC1_CurrentC+ connect to OPAMP4_IN1+(PB11)

OAM1

-

MC1_CurrentA+ connect to ADC12(PC2)
MC1_CurrentB+ connect to ADC12(PC3)
MC1_CurrentC+ connect to ADC12(PC0)

OAM2

R132, R134 mounted

SB5 open

MC2_CurrentA+ connect to OPAMP3_IN+(PB0)
MC2_CurrentB+ connect to OPAMP4_IN2 +(PB13)

R132, R134 unmounted

SB5 closed

MC2_CurrentB+ connect to OPAMP3_IN+(PB0)

3SA position

MC2_CurrentC+ connect to OPAMP4_IN1+(PB11)

3SA position

MC2_CurrentC+ connect to OPAMP2_IN2+(PD14)

OAM2

-

MC2_CurrentA+ connect to ADC34(PD11)
MC2_CurrentB+ connect to ADC34(PD12)
MC2_CurrentC+ connect to ADC34(PD10)

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Table 21. Motor control related switches and solder bridges in PGM position

PGM position Other conditions Description

PGM1

-

OPAMP1_IN+,OPAMP2_IN1+, OPAMP2_IN2+
pull-up source connect to +3.3V power

PGM1

PG3SA position

OPAMP1_IN+, OPAMP2_IN1+, OPAMP2_IN2+
pull-up source connect to DAC_OUT1(PA4)

PG3SA position

OPAMP1_IN+, OPAMP2_IN1+ pull-up source
connect to DAC_OUT1(PA4)

OPAMP2_IN2+ pull-up source connect to
DAC_OUT2(PA5)

PGM2

-

OPAMP4_IN+, OPAMP4_IN1+, OPAMP4_IN2+
pull-up source connect to +3.3V power

PGM2

PG3SA position

OPAMP3_IN+, OPAMP4_IN1+, OPAMP4_IN2+
pull-up source connect to DAC_OUT2(PA5)

PG3SA position

OPAMP3_IN+ , OPAMP4_IN2+ pull-up source
connect to DAC_OUT2(PA5)

OPAMP2_IN1+ pull-up source connect to
DAC_OUT1(PA4)

Connector UM1567

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3 Connector

3.1 RF EEPROM daughter board connector (CN1)

Figure 7. RF EEPROM daughter board connector (CN1)

1. Front view

Table 22. RF EEPROM daughter board connector (CN1)

Pin number Description Pin number Description

1SDA(PA10)5 VDD

2NC6NC

3SCL(PF6)7 GND

4 RESET(PE14) 8 NC

MS30715V1

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3.2 Motor control connector (CN2)

Figure 8. Motor control 1 connector (CN2)

1. Top view

MS30716V1

33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1

34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2

Table 23. Motor control 1 connector (CN2)

Description

Pin of

STM32F303VCT6

Pin number of

CN2

Pin number of

CN2

Pin of

STM32F303VCT6

Description

Emergency
STOP

PE15 1 2 GND

PWM-1H PE9 3 4 GND

PWM-1L PE8 5 6 GND

PWM-2H PE11 7 8 GND

PWM-2L PE10 9 10 GND

PWM-3H PE13 11 12 GND

PWM-3L PE12 13 14 PA0 BUS VOLTAGE

CURRENT A+ Ta b le 2 0 for details 15 16 GND

CURRENT B+ Ta b le 2 0 for details 17 18 GND

CURRENT C+ Ta bl e 2 0 for details 19 20 GND

ICL shut out PE4 21 22 GND

DISSIPATIVE
BRAKE PWM

PE5 23 24 PD8

PFC Inductor

current

+5V power 25 26 PF4

Heatsink

temperature

PFC SYNC PE2 27 28 3.3V power

PFC PWM PE3 29 30 PD2 PFC Shut down

Encoder A PD3 31 32 PD9 PFC Vac

Encoder B PD4 33 34 PD7 Encoder Index

Connector UM1567

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3.3 CAN D-type 9-pin male connector (CN3)

Figure 9. CAN D-type 9-pin male connector (CN3)

1. Front view

Table 24. CAN D-type 9-pin male connector (CN3)

Pin number Description Pin number Description

1, 4, 8, 9 NC 7 CANH

2CANL3, 5, 6GND

MS30717V1

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3.4 Motor control connector (CN4)

Figure 10. Motor control 2 connector (CN4)

1. Top view

MS30718V1

33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1

34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2

Table 25. Motor control 2 connector (CN4)

Description

Pin of

STM32F303V

CT6

Pin number of

CN4

Pin number of

CN4

Pin of

STM32F303V

CT6

Description

Emergency STOP PB7 1 2 GND

PWM-1H PC6 3 4 GND

PWM-1L PC10 5 6 GND

PWM-2H PC7 7 8 GND

PWM-2L PC11 9 10 GND

PWM-3H PC8 11 12 GND

PWM-3L PC12 13 14 PC1 BUS VOLTAGE

CURRENT A+

Ta bl e 20 for

details

15 16 GND

CURRENT B+

Ta bl e 20 for

details

17 18 GND

CURRENT C+

Ta bl e 20 for

details

19 20 GND

ICL shut out PD15 21 22 GND

DISSIPATIVE BRAKE
PWM

PF10 23 24 PD8

PFC Inductor

current

+5V power 25 26 PF2

Heatsink

temperature

PFC SYNC PE2 27 28 3.3V power

PFC PWM PE3 29 30 PD2 PFC Shut down

Encoder A PB6 31 32 PD9 PFC Vac

Encoder B PD13 33 34 PB8 Encoder Index

Connector UM1567

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3.5 ST-LINK/V2 USB type-B connector (CN5)

The USB connector, CN5, is used to connect the embedded ST-LINK/V2 to the PC for a
board debugging.

Figure 11. USB type-B connector (CN5)

1. Front view

3.6 Daughter board extension connectors (CN6 and CN7)

Two 52-pin male headers, CN6 and CN7, can be used to connect with the daughter board or
standard wrapping board to the STM32303C-EVAL evaluation board. All GPIOs are
available on them.The space between these two connectors and the position of the power,
GND and RESET pins are defined as a standard which allows developing common
daughter boards for several evaluation boards. The standard width between CN6 pin1 and
CN7 pin1 is 2700mils (68.58 mm). This standard has been implemented on the majority of
the evaluation boards.

Each pin on CN6 and CN7 can be used by a daughter board after disconnecting it from the
corresponding function block on the STM32303C-EVAL evaluation board. For more details,
refer to Ta bl e 2 7 and Ta b le 2 8.

Table 26. USB type-B connector (CN5)

Pin number Description Pin number Description

1VBUS (power)4 GND

2 DM 5, 6 Shield

3DP

MS30719V1

Table 27. Daughter board extension connector (CN6)

Pin Description Alternative function

How to disconnect with function block on

STM32303C-EVAL board

1GND- -

3 PC7 MC2_PWM_2H Disconnect CN4

5 PC9 I2S_CKIN Remove R247

7 PA10 I2C2_SDA Keep JP5 open

9 PA11 USB_DM Remove R266

11 PC14 OSC32_IN Remove R196, Close SB12

UM1567 Connector

Doc ID 023581 Rev 2 31/58

13 PA13 TMS/ SWDAT Disconnect CN9, CN10

15 PC15 OSC32_OUT Remove R197, Close SB13

17 PA15 JTDI Disconnect CN9, CN10

19 GND - -

21 PD0 CAN_RX Remove R124

23 PD2 MC1_MC2_PFC_SD Remove R153, R165

25 PD4 MC1_EnB Remove C12, Disconnect CN2

27 PD6 JOY_RIGHT Remove R12

29 PD7 MC1_EnIndex/ E2P_CS Remove R57, R58

31 PB4 TRST Disconnect CN9, CN10

33 PB6 MC2_EnA

Remove C35, Keep JP7 open, Disconnect
CN4

35 PB8

MC2_EnIndex/
USB_disconnect

Remove R17, R18

37 PE0 LCD_CS Remove R250

39 GND - -

41 PE3

MC1_MC2_PFCpwm/
TRACE_D0

Remove R3, R4

43 PE5

MC1_DissipativeBrake /
TRACE_D2

Remove R7, R8

45 PF9 SPI2_SCK Remove R303

47 PF10 MC2_DissipativeBrake Disconnect CN4

49 D5V - -

51 PB11

OPAMP4_IN1+/
SHIELD_CT

Remove R35, R137, Close SB11

2PC6

MC2_PWM_1H/
SDcard_detect

Remove R47, R48

4PC8

MC2_PWM_3H/
Hum_Out

Remove R49, R50

6 PA8 I2C2_SMB/ MCO Remove R237, Keep JP1 open

8 PA9 I2S_MCK/ IR_IN Keep JP18 open

10 GND - -

12 PA12 USB_DP Remove R260

14 PF6 I2C2_SCL Keep JP6 open

16 PA14 TCK /SWCLK Disconnect CN9, CN10

18 PC10

MC2_PWM_1L/
RS485_DIR/ I2S_SCK

Remove R51, R52, R129

Table 27. Daughter board extension connector (CN6) (continued)

Pin Description Alternative function

How to disconnect with function block on

STM32303C-EVAL board

Connector UM1567

32/58 Doc ID 023581 Rev 2

20 PC11

MC2_PWM_2L/I2S_DOU
T

Remove R53, R54

22 PC12 MC2_PWM_3L/ I2S_DIN Remove R55, R56

24 PD1 CAN_TX Remove R105

26 PD3 MC1_EnA

Remove C10, Keep JP2 open, Disconnect
CN2

28 PD5 JOY_DOWN Remove R22

30 GND - -

32 PB3 TDO/SWO Disconnect CN9, CN10

34 PB5 JOY_LEFT Remove R307

36 PB7 MC2_STOP Remove R79

38 PB9 IR_LED Remove R262

40 PE1 USART1_RX Keep JP13 open

42 PE2

MC1_MC2_PFCsync /
TRACE_CK

Remove R1, R2

44 PE4

MC1_ICL_SHUTOUT /
TRACE_D1

Remove R5, R6

46 PE6 TRACE_D3 / Key_Button Remove R111, Disconnect CN9

48 +3V3 - -

50 GND - -

52 PB12 OPAMP4_OUT / SHIELD Remove R37, R103, Close SB9

Table 28. Daughter board extension connector (CN7)

Pin Description Alternative function

How to disconnect with function block

on STM32303C-EVAL board

1GND-

3 PD14 OPAMP2_IN2+ / LED_FB Remove R45, R46

5 PD11 MC2_Ain+_ADC34 Remove R92

7 PD9 MC1_MC2_PFC_Vac Remove R80, R146, C7, C26

9 PC13 JOY_SEL Remove R308

11 RESET# - -

13 PB15 SPI2_MOSI Remove R310

15 PB13 OPAMP4_IN2+ Remove R110

17 PE15 MC1_STOP/MicroSD_CS Remove R33, R34

19 D5V - -

21 PE12 MC1_PWM_3L Disconnect CN2

Table 27. Daughter board extension connector (CN6) (continued)

Pin Description Alternative function

How to disconnect with function block on

STM32303C-EVAL board

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Doc ID 023581 Rev 2 33/58

23 PF0 OSC_IN Remove X2, C51, Close SB14

25 PE10 MC1_PWM_2L/ LED3 Remove R27, R28

27 PE9 MC1_PWM_1H/ LED2 Remove R25, R26

29 PE7 JOY_UP Remove R309

31 PB2 OPAMP3_IN- / 1V8_POR Remove R21, R245

33 PB0 OPAMP3_IN+/ Hum_In Remove R19, R20

35 PC4 USART1_TX Remove R177

37 PA6 OPAMP2_OUT Remove C33, R117, R118

39 GND - -

41 PF4 MC1_HeatsinkTemp Remove R82, C8

43 PA2 OPAMP1_OUT Remove C37, R115

45 PA0 MC1_BusVoltage/ LDR_OUT Remove R9, R10

47 PC3 MC1_Bin+_ADC12 Remove R77

49 PC1 MC2_BusVoltage/ COM_IN+ Remove R13, R14

51 PC0 MC1_Cin+_ADC12 Remove R85

2 PD15 MC2_ICL_SHUTOUT/TS2 Remove R43, R102, Close SB7

4 PD13 MC2_EnB/TS1 Remove R41, R104, Close SB6

6 PD12 MC2_Bin+_ADC34/TS_CT Remove R39, C52, Close SB8

8 PD10 MC2_Cin+_ADC34 Remove R100

10 GND - -

12 PD8 MC1_MC2_PFC_Ind Remove R119, R123, C22, C23

14 PB14 SPI2_MISO Remove R299

16 PB10 OPAMP4_IN- Remove C21, R130, R131

18 PE14 ACP_RESET/SPI2_DIR Remove R136, R140

20 PE13 MC1_PWM_3H / LED_DRV Remove R31, R32

22 PE11 MC1_PWM_2H / LED4 Remove R29, R30

24 VDD - -

26 PF1 OSC_OUT Remove R205, Close SB15

28 PE8 MC1_PWM_1L / LED1 Remove R23, R24

30 GND - -

32 PB1 OPAMP3_OUT Remove C29, R135

34 PC5 OPAMP2_IN- Remove C33, R117, R118

36 PA7 OPAMP2_IN1+ Remove R75

38 PA5 MC_DAC_OUT2 Set PGM2, PG3SA in default position

Table 28. Daughter board extension connector (CN7) (continued)

Pin Description Alternative function

How to disconnect with function block

on STM32303C-EVAL board

Connector UM1567

34/58 Doc ID 023581 Rev 2

3.7 RS232 and RS485 connector (CN8)

Figure 12. RS232 and RS485 connector

1. Front view

40 PA4 MC_DAC_OUT1 / I2S_WS Remove R15, R16

42 PA3 OPAMP1_IN- Remove C37, R114, R115

44 PA1 OPAMP1_IN+ Remove R74

46 PF2 MC2_HeatsinkTemp Remove R11

48 PC2 MC1_Ain+_ADC12 Remove R84

50 GND - -

52 NC - -

Table 28. Daughter board extension connector (CN7) (continued)

Pin Description Alternative function

How to disconnect with function block

on STM32303C-EVAL board

Table 29. RS232 and RS485 connector (CN8) with ISP support

Pin number Description Pin number Description

1 NC 6 Bootloader_BOOT0

2 RS232_RX (PE1) 7 NC

3 RS232_TX (PC4) 8 Bootloader_RESET

4 RS485_A 9 RS485_B

5GND

MS30720V1

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3.8 ETM Trace debugging connector (CN9)

Figure 13. ETM Trace debugging connector (CN9)

1. Top view

3.9 JTAG/SWD connector (CN10)

Figure 14. JTAG/SWD debugging connector (CN10)

1. Top view

Table 30. ETM trace debugging connector (CN9)

Pin number Description Pin number Description

1 VDD power 2 TMS/PA13

3 GND 4 TCK/PA14

5 GND 6 TDO/PB3

7 KEY 8 TDI/PA15

9 GND 10 RESET#

11 GND 12 TraceCLK/PE2

13 GND 14 TraceD0/PE3 or SWO/PB3

15 GND 16 TraceD1/PE4 or nTRST/PB4

17 GND 18 TraceD2/PE5

19 GND 20 TraceD3/PE6

MS30722V1

19 17 15 13 11 9 7 5 3 1

20 18 16 14 12 10 8 6 4 2

MS30722V1

19 17 15 13 11 9 7 5 3 1

20 18 16 14 12 10 8 6 4 2

Connector UM1567

36/58 Doc ID 023581 Rev 2

3.10 Audio jack (CN11)

A 3.5 mm stereo audio jack, CN11, is available on the STM32303C-EVAL board to support
the headset (headphone and microphone integrated).

3.11 User USB type-B connector (CN12)

Figure 15. USB type-B connector (CN12)

1. Front view

3.12 ST-LINK/V2 programming connector (CN13)

The CN13 connector is only used for embedded ST-LINK/V2 programming during the board
manufacturing. It is not populated by default and not for an end user.

Table 31. JTAG/SWD debugging connector CN10

Pin number Description Pin number Description

1 VDD power 2 VDD power

3 PB4 4 GND

5PA156GND

7PA138GND

9PA1410GND

11 RTCK 12 GND

13 PB3 14 GND

15 RESET# 16 GND

17 DBGRQ 18 GND

19 DBGACK 20 GND

Table 32. USB type-B connector (CN12)

Pin number Description Pin number Description

1VBUS(power)4 GND

2 DM(PA11) 5,6 Shield

3DP(PA12)

MS30719V1

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3.13 Power connector (CN14)

The STM32303C-EVAL evaluation board can be powered from a 5 V DC power supply via
the external power supply jack (CN14) shown in Figure 16. The central pin of CN14 must be
positive.

Figure 16. Power supply connector (CN14)

1. Front view

3.14 TFT LCD connector (CN15)

A TFT color LCD board is mounted on the CN15 connector. For more details, refer to

Section 2.20.

MS30721V1

DC +5V

GND

Connector UM1567

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3.15 MicroSD connector (CN16)

Figure 17. MicroSD connector (CN16)

1. Top view

Table 33. MicroSD connector (CN16)

Pin number Description Pin number Description

1 NC 6 Vss/GND

2 MicroSDcard_CS (PE15) 7 MicroSDcard_DOUT (PB14)

3 MicroSDcard_DIN (PB15) 8 NC

4+3V39GND

5 MicroSDcard_CLK (PF9) 10 MicroSDcard_detect (PC6)

MS30723V1

Schematics UM1567

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4 Schematics

Figure 18. STM32330C-EVAL board (MB1019)

UM1567 Schematics

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Figure 19. STM32330C-EVAL MCU

Schematics UM1567

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Figure 20. STM32330C-EVAL Power

UM1567 Schematics

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Figure 21. STM32330C-EVAL RS232, RS485 and IrDA

Schematics UM1567

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Figure 22. STM32330C-EVAL Audio

UM1567 Schematics

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Figure 23. STM32330C-EVAL Motor control

Schematics UM1567

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Figure 24. STM32330C-EVAL CAN, IR, High-brightness LED and Humidity sensor

UM1567 Schematics

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Figure 25. STM32330C-EVAL LCD, SDCard and Flash

Schematics UM1567

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Figure 26. STM32330C-EVAL I2C peripherals

UM1567 Schematics

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Figure 27. STM32330C-EVAL peripherals

Schematics UM1567

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Figure 28. STM32330C-EVAL ST-LINK (JTAG only)

UM1567 Schematics

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Figure 29. STM32330C-EVAL JTAG and Trace

Schematics UM1567

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Figure 30. TM32330C-EVAL touch sensing

UM1567 Schematics

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Figure 31. Color LCD daughter board (MB895)

UM1567 STM32303C-EVAL I/O assignment

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Appendix A STM32303C-EVAL I/O assignment

Table 34. STM32303C-EVAL I/O assignment

Pin no. Pin name

STM32303C-EVAL double motor

control I/O assignment

STM32303C-EVAL general purpose

features I/O assignment

1 PE2 MC1_MC2_PFC_Sync TRACECK
2 PE3 MC1_MC2_PFC_PWM TRACED0
3 PE4 MC1_ICL-shut-out TRACED1
4 PE5 MC1_Dissipative_brake TRACED2
5 PE6 - WKUP3 Key_button/TRACED3
6VBAT

7

PC13 - TAMPER1 -

WKUP2

Joy_SEL

8 PC14 - OSC32_IN OSC32_IN

9 PC15 - OSC32_OUT OSC32_OUT
10 PF9 SPI2_SCK
11 PF10 MC2_Dissipative_brake
12 PF0-OSC_IN OSC_IN
13 PF1-OSC_OUT OSC_OUT
14 NRST NRST
15 PC0 MC1_Cin+_ADC12_IN6

16 PC1 MC2_BUS_VOLTAGE

Potentiometer_COMP7_INp &

ADC12_IN7
17 PC2 MC1_Ain+_ADC12_IN8
18 PC3 MC1_Bin+_ADC12_IN9
19 PF2 MC2_heat_sink_temp
20 VSSadc / VREF­21 Vref+
22 VDDadc

23

PA0 -TAMPER2-

WKUP1

MC1_BUS_VOLTAGE

LDR_ADC1_IN1 &

COMP7_INp/COMP1_INn
2 4 PA 1 O PAM P 1 _ IN +
2 5 PA 2 O PA MP 1 _ OU T
2 6 PA 3 O PAM P 1 _ IN ­27 PF4 MC1_heatsink_temp
28 VDD4
29 PA4 MC_DAC1_OUT I2S_WS
30 PA5 MC_DAC2_OUT
3 1 PA 6 O PA MP 2 _ OU T
3 2 PA 7 O PA M P2 _ I N 1+
33 PC4 USART1_TX

STM32303C-EVAL I/O assignment UM1567

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34 PC5 OPAMP2_IN­35 PB0 OPAMP3_IN+ Humidity_input
36 PB1 OPAMP3_OUT
37 PB2 OPAMP3_IN- 1.8V POR
38 PE7 Joy_up
39 PE8 MC1_PWM_1L LED1
40 PE9 MC1_PWM_1H LED2
41 PE10 MC1_PWM_2L LED3
42 PE11 MC1_PWM_2H LED4
43 PE12 MC1_PWM_3L
44 PE13 MC1_PWM_3H Power_LED_DRIVE
45 PE14 ACP_RESET
46 PE15 MC1_STOP uSD_CS
47 PB10 OPAMP4_IN­48 PB11 OPAMP4_IN1+ Shield_CT
49 VSS2
50 VDD_2
51 PB12 OPAMP4_OUT Shield
52 PB13 OPAMP4_IN2+
53 PB14 SPI2_MISO
54 PB15 SPI2_MOSI
55 PD8 MC1_MC2_PFC-inductor
56 PD9 MC1_MC2_PFC_VAC
57 PD10 MC2_Cin+_ADC34_IN7
58 PD11 MC2_Ain+_ADC34_IN8
59 PD12 MC2_Bin+_ADC34_IN9 TS_CT
60 PD13 MC2_Encoder_B TS_Button1
61 PD14 OPAMP2_IN2+ Power_LED_Feedback
62 PD15 MC2_ICL-shut-out TS_Button2
63 PC6 MC2_PWM_1H uSD-detect
64 PC7 MC2_PWM_2H
65 PC8 MC2_PWM_3H Humidity_output
66 PC9 I2S_CKIN
67 PA8 I2C2_SMBAl / Audio_MCO
68 PA9 IR_IN / I2S_MCK
69 PA10 I2C2_SDA
70 PA11 USBDM
71 PA12 USBDP
72 PA13 SWDAT/JTMS

Table 34. STM32303C-EVAL I/O assignment (continued)

Pin no. Pin name

STM32303C-EVAL double motor

control I/O assignment

STM32303C-EVAL general purpose

features I/O assignment

UM1567 STM32303C-EVAL I/O assignment

Doc ID 023581 Rev 2 55/58

73 PF6 I2C2_SCL
74 VSS3
75 VDD3
76 PA14 SWCLK/JTCK
77 PA15 JTDI
78 PC10 MC2_PWM_1L RS485_DIR / I2S_CK
79 PC11 MC2_PWM_2L I2S_DOUT
80 PC12 MC2_PWM_3L I2S_DIN
81 PD0 CAN_RX
82 PD1 CAN_TX
83 PD2 MC1_MC2_PFC_Shunt-Down
84 PD3 MC1_Encoder_A
85 PD4 MC1_Encoder_B
86 PD5 Joy_Down
87 PD6 Joy_right
88 PD7 MC1_Encoder_Index EEPROM_CS
89 PB3 JTDO, TRACESWO
90 PB4 NJTRST
91 PB5 Joy_left
92 PB6 MC2_Encoder A
93 PB7 MC2_STOP
94 BOOT0
95 PB8 MC2_Encoder Index USB_disconnect
96 PB9 LED_IR_OUT
97 PE0 LCD_CS
98 PE1 USART1_RX
99 VSSA - VSS1

100 VDDA - VDD1

Table 34. STM32303C-EVAL I/O assignment (continued)

Pin no. Pin name

STM32303C-EVAL double motor

control I/O assignment

STM32303C-EVAL general purpose

features I/O assignment

Mechanical dimensions UM1567

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Appendix B Mechanical dimensions

Figure 32. Mechanical dimensions

Table 35. Mechanical dimensions

Symbol Size (mm) Symbol Size (mm) Symbol Size (mm)

A 68.58 e 77.44 P1 25.4

a1 2.54 H 11 P2 111.76

a2 2.54 Lx 7.62 Q1 25.4

B 36 Ly 5.715 Q2 19.05

D 3.5 Mx 21.62 X 118.11

d 3.2 My 23.81 Y 172.72

UM1567 Revision history

Doc ID 023581 Rev 2 57/58

Revision history

Table 36. Document revision history

Date Revision Changes

20-Nov-2012 1 Initial release.

04-Feb-2013 2 Updated Section 1.4: Delivery recommendations.

UM1567

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