Olimexino STM32 / Leaflabs Maple

https://www.olimex.com/Products/Duino/STM32/OLIMEXINO-STM32/

http://leaflabs.com/devices/maple/

Specifications

ChipSTM32F103RBT6
PackageLQFP64
RAM20 kBytes
Flash128 kBytes
Speed72 Mhz
USARTs3
SPIs2
I2Cs2
USBYes
DACsNo
SD CardYes

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Pinout

Hover the mouse over a pin function for more information. Clicking in a function will tell you how to use it in Espruino.

GND
PWM D36
SD CARD PWM SPI2 MOSI D34
SD CARD PWM SPI2 SCK D32
I2C2 SDA PWM USART3 RX D30
ADC PWM 3.3v D28
USART3 TX D26
CAN I2C1 SDA PWM D24
D4 3.3v PWM SPI1 MOSI
D11 3.3v ADC PWM SPI1 MOSI
D20 3.3v ADC
D8 PWM USART1 RX
GND
RST
3.3
3.3A
GNDA
GND
VIN
D15 3.3v ADC
D16 3.3v ADC
D17 3.3v ADC
D18 3.3v ADC
D19 3.3v ADC
D20 3.3v ADC
D14 CAN I2C1 SCL PWM
GND
D13 3.3v ADC LED1 SPI1 SCK
D12 3.3v ADC PWM SPI1 MISO
D11 3.3v ADC PWM SPI1 MOSI
D10 3.3v ADC USART2 CK
D9 I2C1 SDA PWM USART1 RX
D8 PWM USART1 RX
D7 PWM USART1 TX
D6 PWM USART1 CK
D5 I2C1 SCL PWM USART1 TX
D4 3.3v PWM SPI1 MOSI
D3 3.3v ADC LED2 PWM
D2 3.3v ADC
D1 3.3v ADC PWM USART2 TX
D0 3.3v ADC PWM USART2 RX
ADC LED1 SPI1 SCK 3.3v D13
ADC PWM SPI1 MISO 3.3v D12
I2C2 SCL PWM USART3 TX D29
PWM USART1 TX D7
3V3

Pins not on connectors

D15 3.3v ADC
D16 3.3v ADC
D17 3.3v ADC
D18 3.3v ADC
D19 3.3v ADC
D21 3.3v
D22 3.3v OSC RTC
D38 BTN1 PWM
D39 USB USART3 CK
D40 CAN USB PWM
D41 CAN USB