STM32 development board

introduction

The BitWizard STM32 development board is an STM32F072 development board that is a bit more compact than the ST Nucleo boards.

It differs from the Nucleo in that it does not try to break out EVERY pin of the chip, just a useful subset. Some pins that have I2C, SPI, or UART functionality are broken out on connectors specifically tailored for that use case. Many other GPIO pins are broken out on standard 2x10 headers.

The board is available for purchase "on request". It cannot compete with the ST Nucleo boards (on price). But if you want one shoot us an Email and we'll sell you one (or more).

pinout

IO voltage

The "VCCIO" voltage can be set with the jumper "5V/3.3V"

Note that this is "power for the slave device", it does not imply that the outgoing signals will have a 5V level (that's always 3.3V), or that the pins are 5V tolerant.

UART

(not all pin numbers are typed out fully).

• 1 GND
• PA10 RX
• PA9 TX
• 4 VCCIO

Position of this connector: X 1475, Y 100 mil.

I2C1

(not all pin numbers are typed out fully).

• 1 GND
• PB7 SDA
• PB6 SCL
• 4 VCCIO

I2C2

(not all pin numbers are typed out fully).

• 1 GND
• PB11 SDA
• PB10 SCL
• 4 VCCIO

SPI

See elsewhere on this site for the SPI functions of this connector. It is connected to PB12-15.

Position of this connector: X 450, Y 150 mil.

SV2

General purpose IO connector. (not all pin numbers are typed out fully).

• 1 GND
• 2 GND
• 3 PA0
• PA1
• PA2
• PA3
• PA4
• PA5
• PA6
• PA7
• PA8
• PA15
• PB0
• PB1
• PD2
• PB5
• PB8
• PB9
• 19 VCCIO
• 20 VCCIO

Position of this connector: X 125 Y 1100 mil.

SV3

General purpose IO connector.

• 1 GND
• 2 GND
• 3 PC0
• 4 PC1
• 5 PC2
• 6 PC3
• 7 PC4
• 8 PC5
• 9 PC6
• 10 PC7
• 11 PC8
• 12 PC9
• 13 PC10
• 14 PC11
• 15 PC12
• 16 PC13
• 17 PC14
• 18 PC15
• 19 VCCIO
• 20 VCCIO

Position of this connector: X 775, Y 1825 mil .

SWD

• 1 VCC 3.3V
• 2 SWCK PA14
• 3 GND
• 4 SWDAT PA13
• 5 NRST
• 6 BOOT0

Position of this connector: X 1850, Y 1025 mil.