ST STM32F0DISCOVERY User manual

May 2012 Doc ID 022910 Rev 2 1/41
UM1525
User manual
STM32F0DISCOVERY
Discovery kit for STM32 F0 microcontrollers
Introduction
The STM32F0DISCOVERY helps you to discover the STM32 F0 Cortex™-M0 features and
to develop your applications easily. It is based on STM32F051R8T6, an STM32 F0 series
32-bit ARM® Cortex™ microcontroller, and includes an ST-LINK/V2 embedded debug tool,
LEDs, push buttons and a prototyping board.
Figure 1. STM32F0DISCOVERY
Table 1. Applicable tools
Type Part number
Evaluation tools STM32F0DISCOVERY
www.st.com
Downloaded from Arrow.com.

Contents UM1525
2/41 Doc ID 022910 Rev 2
Contents
1 Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Quick start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Development toolchain supporting the STM32F0DISCOVERY . . . . . . . . . 7
2.4 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Hardware and layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1 STM32F051R8T6 microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Embedded ST-LINK/V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.1 Using ST-LINK/V2 to program/debug the STM32 F0 on board . . . . . . . 15
4.2.2 Using ST-LINK/V2 to program/debug an external STM32 application . . 16
4.3 Power supply and power selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.4 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.5 Push buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.6 JP2 (Idd) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.7 OSC clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.7.1 OSC clock supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.7.2 OSC 32 KHz clock supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.8 Solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.9 Extension connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5 Connecting modules on the prototyping board . . . . . . . . . . . . . . . . . . 27
5.1 Mikroelektronica accessory boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.2 ST MEMS “adapter boards”, standard DIL24 socket . . . . . . . . . . . . . . . . 30
5.3 Arduino shield boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6 Mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7 Electrical schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Downloaded from Arrow.com.Downloaded from Arrow.com.

UM1525 Contents
Doc ID 022910 Rev 2 3/41
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

List of tables UM1525
4/41 Doc ID 022910 Rev 2
List of tables
Table 1. Applicable tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. ON/OFF conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Jumper states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 4. Debug connector CN3 (SWD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 5. Solder bridge settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 6. MCU pin description versus board function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 7. Connecting using mikroBUS™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 8. Connecting using IDC10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Table 9. Connecting with a DIL24 board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 10. Supported MEMS adapter boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Table 11. Connecting with Arduino shields. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 12. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

UM1525 List of figures
Doc ID 022910 Rev 2 5/41
List of figures
Figure 1. STM32F0DISCOVERY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 3. Top layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4. Bottom layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 5. STM32F051R8T6 package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 6. STM32F051R8T6 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 7. Typical configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 8. STM32F0DISCOVERY connections image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 9. ST-LINK connections image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 10. Using IDC10 and mikroBUS™ connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 11. DIL24 socket connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 12. Arduino shield board connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 13. STM32F0DISCOVERY mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 14. STM32F0DISCOVERY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 15. ST-LINK/V2 (SWD only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 16. MCU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

Conventions UM1525
6/41 Doc ID 022910 Rev 2
1 Conventions
Tabl e 2 provides the definition of some conventions used in the present document.
Table 2. ON/OFF conventions
Convention Definition
Jumper JP1 ON Jumper fitted
Jumper JP1 OFF Jumper not fitted
Solder bridge SBx ON SBx connections closed by solder
Solder bridge SBx OFF SBx connections left open
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

UM1525 Quick start
Doc ID 022910 Rev 2 7/41
2 Quick start
The STM32F0DISCOVERY is a low-cost and easy-to-use development kit to quickly
evaluate and start development with an STM32 F0 series microcontroller.
Before installing and using the product, please accept the Evaluation Product License
Agreement from www.st.com/stm32f0discovery.
For more information on the STM32F0DISCOVERY and for demonstration software, visit
www.st.com/stm32f0discovery.
2.1 Getting started
Follow the sequence below to configure the STM32F0DISCOVERY board and launch the
DISCOVER application:
1. Check jumper position on the board, JP2 on, CN2 on (Discovery selected).
2. Connect the STM32F0DISCOVERY board to a PC with a USB cable ‘type A to mini-B’
through USB connector CN1 to power the board. Red LED LD1 (PWR) and LD2 (COM)
light up and green LED LD3 blinks.
3. Press user button B1 (bottom left corner of the board).
4. Observe how the green LED LD3 blinking changes according to USER button B1
clicks.
5. Each click on USER button B1 is confirmed by the blue LED LD4.
6. To study or modify the DISCOVER project related to this demo, visit
www.st.com/stm32f0discovery and follow the tutorial.
7. Discover the STM32F0 features, download and execute programs proposed in the list
of projects.
8. Develop your own application using available examples.
2.2 System requirements
●Windows PC (XP, Vista, 7)
●USB type A to Mini-B USB cable
2.3 Development toolchain supporting the STM32F0DISCOVERY
●Altium®, TASKING™ VX-toolset
●ARM®, Atollic TrueSTUDIO®
●IAR™, EWARM (IAR Embedded Workbench®)
●Keil™, MDK-ARM™
2.4 Order code
To order the STM32F0 Discovery kit, use the order code STM32F0DISCOVERY.
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

Features UM1525
8/41 Doc ID 022910 Rev 2
3 Features
The STM32F0DISCOVERY kit offers the following features:
●STM32F051R8T6 microcontroller featuring 64 KB Flash, 8 KB RAM in an LQFP64
package
●On-board ST-LINK/V2 with selection mode switch to use the kit as a standalone
ST-LINK/V2 (with SWD connector for programming and debugging)
●Board power supply: through USB bus or from an external 5 V supply voltage
●External application power supply: 3 V and 5 V
●Four LEDs:
– LD1 (red) for 3.3 V power on
– LD2 (red/green) for USB communication
– LD3 (green) for PC9 output
– LD4 (blue) for PC8 output
●Two push buttons (user and reset)
●Extension header for LQFP64 I/Os for quick connection to prototyping board and easy
probing.
●An additional board is provided with the kit which can be connected to the extension
connector for even easier prototyping and probing.
●A large number of free ready-to-run application firmware examples are available on
www.st.com/stm32f0discovery to support quick evaluation and development.
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

UM1525 Hardware and layout
Doc ID 022910 Rev 2 9/41
4 Hardware and layout
The STM32F0DISCOVERY is designed around the STM32F051R8T6 microcontroller in a
64-pin LQFP package.
Figure 2 illustrates the connections between the STM32F051R8T6 and its peripherals (ST-
LINK/V2, push button, LEDs and connectors).
Figure 3 and Figure 4 help you to locate these features on the STM32F0DISCOVERY.
Figure 2. Hardware block diagram
-36
"
53%2
)/
-INI
53"
,$0#
"
234
2%3%4
)/)/
(EADER
(EADER
37$
%MBEDDED
34,).+6
34-&24
,%$
,$0#
,%$
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.

Hardware and layout UM1525
10/41 Doc ID 022910 Rev 2
Figure 3. Top layout
MS30024V1
(red/green LED) LD2
COM
CN3
SWD connector
IDD measurement
ST-LINK/V2
B1 user button
B2 reset button
LD1 (red LED)
PWR
CN2
ST-LINK/DISCOVERY
selector
(green LED) LD3
LD4 (blue LED)
STM32F051R8T6
JP2
5V power supply
input output
3V power supply
input output
SB1 (VBAT)
SB3(B1-USER)
SB4 (B2-RESET)
Note: Pin 1 of CN2, CN3, P1 and P2 connectors are identified by a square.
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.