STM32 Core: Module Specifications
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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 | |
| D6 | PA14 | SWCLK | |
| D7 | PA15 | TMR2_CH1 | |
| D8 | PB3 | TMR2_CH2, SPI1_SCK | |
| D9 | PB4 | TM3_CH1 | |
| 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 |
