Ultra-low-power Arm Cortex-M0+ MCU with 64-Kbytes of Flash memory, 32 MHz CPU
Ultra-low-power Arm Cortex-M0+ MCU with 64 Kbytes of Flash memory, 32 MHz CPU, USB
Ultra-low-power Arm Cortex-M0+ MCU with 128-Kbytes of Flash memory, 32 MHz CPU
Ultra-low-power Arm Cortex-M0+ MCU with 16-Kbytes Flash, 32 MHz CPU

32-bit ARM Cortex-M0+ MCU, 64KB Flash, 32MHz, USB, LCD, 48-Pin PQFP

Ultra-low-power Arm Cortex-M0+ MCU with 32 Kbytes of Flash memory, 32 MHz CPU, USB