1. Features
 8051 compatible Pipe-lined instruction based on the single-chip 8-bit micro-controller
 Flash ROM: 64K Bytes
 EEPROM: 2K Bytes
 RAM: internal 256 Bytes and external 2816 Bytes
LCD RAM：32 Bytes
 Operation voltage: 2.2V - 3.8V
 Oscillator (Code option):
- fOSC=32.768kHz
- Build in PLL : PLL= 8.192MHz
 46 CMOS general purpose I/O ports
 Built-in pull-up resistor for I/O
 Three 16-bit timer / counters: T0, T1 & T2
 Powerful interrupt sources:
- Timer0, Timer1, Timer2
- External interrupt 1, 2, 3
- EUART0, EUART1, EUART2
- RTC, LPD
- ADC, EMU, PWM
 Energy Metering
Active/ reactive/ apparent Energy Metering and voltage/ current rms metering
Accuracy of 0.1% for active energy over a dynamic range of 2000:1.
Accuracy of 0.5% for reactive energy over a dynamic range of 1000:1.
Less than 0.5% error for voltage/ current rms
 5 channels 10-bit Analog to Digital Converter (ADC) with built-in compare function
 EUART0,EUART1 (built-in IR), EUART2
 Built-in Calendar clock
 Two 12-bit PWM timers
 LCD driver:
- 4 COM x 32 SEG (1/4 duty 1/3 bias)
- 6 COM x 30 SEG (1/6 duty 1/3 bias)
- 8 COM x 28 SEG (1/8 duty 1/4 bias)
- 8 levels contrast software programmable
 Built-in low power detection (LPD)
 Built-in low voltage reset (LVR) function (enabled by code option)
LVR voltage: 2.3V
 Built-in Watch Dog Timer (WDT)
 Warm-up timer for power-on reset
 CPU Machine cycle: 1 oscillator clock
 Support Low power operation modes:
- IDLE Mode
- Power-Down Mode
 Low-power Comsumption
 Package: LQFP64(10*10) / LQFP64 (7*7)