1. Features

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

 Flash ROM: 64K Bytes

 ISP ROM: 1K Bytes

 RAM: internal 256 Bytes, external 2816 Bytes

 EEPROM-Like:bulid-in 2048 Bytes

 5 Bytes MCU identification number to be readable

 The highest CPU frequency up to 24M

 Operation Voltage: VDD = 2.0V - 5.5V

 Oscillator (code option):

- High frequency Crystal oscillator: 2MHZ-12MHZ

- low frequency Crystal oscillator: 32.768kHz

- internal frequency Ceramic oscillator: 12MHz

- Internal low frequency RC oscillator: 128KHz

- PLL oscillator: four times

 61 CMOS bi-directional I/O pins

 Built-in pull-up resistor for input pin

 Two 16-bit timer/counters T2 and T3

 Four PCA, of which the PCA0, PCA2, PCA3 each containing two comparison/capture moudles, PCA1 has three comparative/capture moudles

 10 External interrupt sources

 Powerful interrupt sources:

- Timer2, 3, PCA0, 1, 2, 3

- INT2, 3 INT40-47

- ADC, DAC, SCM, LPD

- EUART0, EUART1, TWI, SPI, USB

 LCD driver:

- 4 X 40dots (1/4 duty 1/3 bias)

- 5 X 39 dots (1/5 duty 1/3 bias)

- 6 X 38 dots (1/6 duty 1/3 bias)

 LED driver: 10 X 8dots

 Two Enhanced UART (EUART) with own baud rate generator

 Built-in regulator

- Output: 3.3V

 12-bit 1M spsSAR Analog Digital Converter

- built-in 1.5V/2.5V reference voltage

- 12 external analog inputs

 12-bit voltage type DAC digital-to-analog converters

- 12-bit Accuracy

- 1 channel

 The Universal Serial Bus (USB)

- Compatible with USB2.0 (Full speed 12Mbps)

- Support control, interrupt and buck data transfer

- Support 3 endpoints: (EP0, EP1, EP2)

 Built-in operational Amplifier (OP)

 SPI (Master/slave Mode)

 TWI (I2C Interface)

 Built-in low voltage Reset (LVR) function (code option)

- LVR Voltage: 2.1v

- LVR Voltage: 2.7v

- LVR Voltage: 3.7v

- LVR Voltage: 4.1v

 CPU Machine period: 1 oscillator clock

 Built-in Watch Dog Timer (WDT) (code option)

 Built-in oscillator Warm-up timer

 Support Low power operation modes:

- Idle Mode

- Power-Down Mode

 Flash Type

 Package: LQFP64, TQFP48