Ultra-low-power Arm Cortex-M3 MCU with 64 Kbytes of Flash memory, 32 MHz CPU, USB

32-bit ARM Cortex-M3 MCU, 128KB Flash, 32MHz, UFQFPN, USB, I2C, SPI

Ultra-low-power Arm Cortex-M3 MCU with 64 Kbytes of Flash memory, 32 MHz CPU, USB
32-bit ARM Microcontroller, 32KB FLASH, 10KB RAM, 37 I/Os, 8 Timers