Description: CPU Core: ARM Cortex-M0 CPU Maximum primary frequency: 40 MHz Operating Voltage Range: 2.1V~3.6V Internal Oscator: External Clock frequency Range: 24 MHz ~ 36 MHz Program FLASH Capacity: 250KB RAM Total Capacity: 32KB EEPROM / Data FLASH Capacity: 2KB GPIO Number of ports: 40 ADC (Number of cells /