32-bit ARM Cortex-M3 MCU, 32MHz, 256KB Flash, UFQFPN, 37 I/O
32-bit ARM Cortex-M4 MCU, 80MHz, 256KB Flash, 160KB RAM, 38 I/O
32-bit ARM Cortex-M3 MCU, 256KB Flash, 32MHz, USB, 37 I/O, S-PQFP-G48
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
