It features 64KB Flash, 4KB SRAM, high-speed communication interfaces, small pins, small size, which is suitable for application in all kinds of consumer electronics, home appliances and other fields > ARM Cortex M0+ core > Operating voltage: 1.8V-5.5V @64MHz > Operating temperature: -40℃ - 85℃ > 64KB Flash > 4KB SRAM > 1KB DATA FLASH > 8x 16-bit general-purpose timers > 8-channel enhanced PWM module > Built-in high precision 12-bit ADC, sampling rate: 500Ksps > 1 RTC > 2 UART interfaces 1 I2C interface 1 SPI interface > Supports 4 types of oscillation > 22 general-purpose GPIOs > Package type: QFN24