STM32 Core: Module Specifications

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Microduino-CoreSTM32

The Core STM32 is based on ST's STM32F103CBT6 microcontroller, also used in LeafLabs' Maple Mini. However, note that the connections from the STM32's pins to the Arduino I/O's (D0-13, A0-A7) don't match the way the Mini is connected.

Pinout

Please note this is UNOFFICIAL information, see discussion page

Upin27 pin STM32 port Other functions Notes
Rx0 PA10 USART1_RX, TMR1_CH3
Tx1 PA9 USART1_TX, TMR1_CH2
D2 PB11 USART3_RX, I2C2_SDA
D3 PB10 USART3_TX, I2C2_SCL
D4 PA8 TMR1_CH1 On board LED, 1 = LED on
D5 PA13 SWDIO, JTMS
D6 PA14 SWCLK, JTCK
D7 PA15 TMR2_CH1, JTDI
D8 PB3 TMR2_CH2, SPI1_SCK, JTDO
D9 PB4 TM3_CH1, JNTRST
D10 PA4 SPI1_NSS, ADC_IN4
D11 PA7 SPI1_MOSI, ADC_IN7, TMR3_CH2
D12 PA6 SPI1_MISO, ADC_IN6, TMR3_CH1
D13 PA5 SPI1_SCK, ADC_IN5
A0 PA0 ADC_IN0, TMR2_CH1
A1 PA1 ADC_IN1, TMR2_CH2
A2 PA2 USART2_TX, ADC_IN2, TMR2_CH3
A3 PA3 USART2_RX, ADC_IN3, TMR2_CH4
SDA PB7 I2C1_SDA, TMR4_CH2 Not an analog input
SCL PB6 I2C1_SCL, TMR4_CH1 Not an analog input
A6 PB0 ADC_IN8, TMR3_CH3
A7 PB1 ADC_IN9, TMR3_CH4