SN32F240B series 32-bit micro-controller is a new series of extremely Low Power Consumption and High Performance MCU powered by ARM Cortex-M0 processor with Flash ROM architecture. SN32F240B series MCU is high performance and wide operating range (2.5V~5.5V, 48 MHz maximum frequency). The device is designed with the excellent IC structure including the program memory up to 64KB Flash ROM, data memory of 8KB RAM, Nested Vectored Interrupt Controller (NVIC), two 16-bit timers, I2C, SPI, UART interfaces, Full Speed USB 2.0 SIE, PS/2 mode, 16+1-channel 12-bit SAR ADC and flexible operating modes. There are several system clock sources, including internal 48MHz RC oscillator, internal 32KHz RC oscillator. Under Flash ROM platform, SN32F240B series MCU builds in in-system-programming (ISP) function extending to EEPROM emulation. Powerful functionality, high reliability and low power consumption can apply to battery level application easily.