详细说明：

Enhanced I/O Flash Type MCU 8-Bit MCU with EEPROM Features CPU Features  Operating Voltage: fSYS= 8MHz: 2.2V~5.5V fSYS= 12MHz: 2.7V~5.5V fSYS= 20MHz: 4.5V~5.5V  Up to 0.2s instruction cycle with 20MHz system clock at VDD=5V  Power down and wake-up functions to reduce power consumption  Five oscillators: External Crystal - HXT External 32.768kHz Crystal - LXT External RC - ERC Internal RC - HIRC Internal 32kHz RC - LIRC  Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP  Fully integrated internal 4MHz, 8MHz and 12MHz oscillator requires no external components  All instructions executed in one or two instruction cycles  Table read instructions  63 powerful instructions  Up to 12-level subroutine nesting  Bit manipulation instruction Peripheral Features  Flash Program Memory: 1K14 ~ 12K16  RAM Data Memory: 648 ~ 5768  EEPROM Memory: 328~2568  Watchdog Timer function  Up to 50 bidirectional I/O lines  Software controlled 4-SCOM lines LCD driver with 1/2 bias  Multiple pin-shared external interrupts  Multiple Timer Module for time measure, input capture, compare match output, PWM output or single pulse output function  Serial Interfaces Module - SIM for SPI or I2C  Dual Comparator functions  Dual Time-Base functions for generation of fixed time interrupt signals  Low voltage reset function  Low voltage detect function  Wide range of available package types