1. Features
 8bits micro-controller with Pipe-line structured 8051 compatible instruction set
 Flash ROM: 8K Bytes
 RAM: internal 256 Bytes, external 256 Bytes, LCD RAM 19Bytes
 EEPROM-like: 1K Bytes
 Operation Voltage:
fOSC = 32.768kHz - 12.3MHz, VDD = 2V - 5.5V
 Oscillator (code option)
- Crystal oscillator: 32.768kHz
- Crystal oscillator: 2MHz - 12.3MHz
- Ceramic oscillator: 2MHz - 12.3MHz
- Internal RC: 12.3MHz (±2%)/128K
 26 CMOS bi-directional I/O pins
 Built-in pull-up resistor for input pin
 Four 16-bit timer/counters T2, T3, T4 and T5
 One 12-bit PWM
 Powerful interrupt sources:
- Timer2, 3, 4, 5
- INT2, 3
- INT40, INT41, INT42, INT43
- ADC, EUART, SCM, LPD
- PWM
 EUART0
 6channels 10-bits Analog Digital Converter (ADC), with comparator function built-in
 Buzzer
 LED driver:
- 4 X 8 dots (1/4 duty)
 LCD driver:
- 4 X 12 dots (1/4 duty 1/3 bias)
 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/TSSOP28