1. Features

 8bits micro-controller with Pipe-line structured 8051 compatible instruction set

 Flash ROM: 16K Bytes

 RAM: internal 256 Bytes, external 256 Bytes

 EEPROM-like: 1024 Bytes

 Operation Voltage:

VDD = 2V - 5.5V, fOSC = 32.768kHz - 12MHz

 Oscillator (code option)

- Crystal oscillator: 32.768kHz

- Crystal oscillator: 2MHz - 12MHz

- Ceramic oscillator: 2MHz - 12MHz

- Internal RC: 12MHz (±2%)/128K

 26/18 CMOS bi-directional I/O pins

 8/6 Large-current drive port

 Built-in pull-up resistor for input pin

 Powerful interrupt sources:

- Timer2, 3, 4, 5

- INT2, 3

- INT40, INT41, INT42, INT43

- ADC, SCM , LPD, EUART

- PWM

 EUART (No EUART in 20 PIN package)

 8/6channels 10-bits Analog Digital Converter (ADC), with comparator function built-in

 Buzzer

 Four 16-bit timer/counters T2, T3, T4 and T5

 One 12-bit PWM

 Low Voltage Reset (LVR) function (enabled by code option)

- LVR voltage level 1: 4.3V

- LVR voltage level 2: 2.1V

 CPU Machine cycle: 1 oscillator clock

 Watch Dog Timer (WDT)

 Warm-up Timer

 Support Low power operation modes:

- Idle Mode

- Power-Down Mode

 Flash Type

 Package:

- SOP28

- SOP20/TSSOP20