SN8F27E23 series 8-bit micro-controller is a new series production applied advanced semiconductor technology to implement flash ROM architecture. SN8F27E23 is RISC-like high performance and wide operating range (1.8V~5.5V @32mips). One clock per instruction cycle (1T) architecture will provide up to 32MIPS computation power. The device is designed with the excellent IC structure including the program memory up to 4K-word Flash ROM, data memory of 128-bytes RAM, 8-level stack buffers, multi-interrupt vector, five 8-bit timers, high performance 12+1 channel 12-bit ADC(one internal ADC channel for 2V/3V/4V measurement), one channel PWM output (PWM0), six channel PWM output (PWM10/11, 20/21, 30/31), 2-type serial interfaces and flexible operating modes. There are four oscillator configurations to select for generating system clock, including high speed crystal, ceramic resonator, external clock input or cost-saving RC. This device also includes an internal 32MHz RC oscillator for system clock. Under flash ROM platform, SN8F27E23 builds in in-system-programming (ISP) function extending to EEPROM emulation and Embedded ICE function. Powerful functionality, high reliability and low power consumption can apply to AC power application and battery level application easily.