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Franzininho C0 Board

The Franzininho C0 is an open hardware development board based on the STM32C0 microcontroller — an ARM Cortex-M0+ from STMicroelectronics — created in Brazil. Its main purpose is to serve as a teaching, learning, and prototyping tool for students, makers, enthusiasts, and developers.

With a small breadboard-compatible form factor, it can be programmed using ST's official tools as well as the Arduino IDE.

Franzininho C0

Hardware features​

  • Microcontroller:
    • STM32C011F6P6 — ARM Cortex-M0+ @ 48 MHz
    • Flash: 32 KB
    • RAM: 6 KB
  • ADC: 12-bit (13 channels + 2 internal)
  • Communication: 1× I2C, 1× SPI, 2× USART
  • RTC
  • Timers/Counters: 8
  • GPIO: 16 — breadboard-compatible
  • USB/Serial converter
  • Micro USB connector
  • Operating voltage: 3.3 V
  • Power supply:
    • 5 V via USB connector
    • 5 V and GND via pins
  • General-purpose button: 1
  • General-purpose LEDs: 2
  • Buttons: 1× Reset, 1× Boot
  • Breadboard-compatible
  • Dimensions: 38.1 mm × 20.32 mm
  • License: CERN Open Hardware Licence version 2

Pinout​

Franzininho C0 Pinout

Onboard resource mapping​

  • Button: PA8
  • LED1: PB6
  • LED2: PB7
  • RX: PA10
  • TX: PA11

Microcontroller pinout​

Franzininho C0 STM32C011F6P6 Pinout

Schematic​

Franzininho C0 Schematic

License​

The Franzininho C0 is an open hardware project licensed under the CERN Open Hardware Licence version 2. Before reproducing or creating derivatives, review the license requirements to ensure compliance.

Repository: Franzininho C0 on OSHWA Lab

Photos​

Franzininho C0 front and back

Franzininho C0 on breadboards