Features

CMOS technology for low power consumption

Operating voltage: 4.4V to 5.25V

3.3V regulator output

- Maximum driving current 35mA

8-bit CMOS Micro-Processor (uP) core

- Instruction set is compatible with standard 8051

Program Memory

- 16K Bytes Program Memory (MASK ROM)

Data Memory

- 256 Bytes Internal RAM

Two 8-Bit auto-reloadable Base Timer

Interrupt

- 11 vectors interrupt structure

- 2 programmable priority levels

Built-in 1.5K ohm USB pull-up resistor

USB Specification Compliance

- Complies with USB specification 1.1

- Support one Low-Speed USB Device Address with3

endpoints (endpoint 0, 1, and 2)

One set of Time Capture circuit (rising and falling edge)

Two Blue LED ports

On-chip oscillator

- Built-in 6MHz RC oscillator for MCU and USB

- Built-in 32KHz RC oscillator for programmable Wake-up

Timer

General Purpose I/O

- Up to 36 selectable GPIO

- External interrupt input: P46

- Source current selectable: Port0, Port1, Port2, Port3

Reset

- Hardware Reset (External Reset, Power-on reset and

Low-Voltage Reset)

- USB Reset

- Watch-dog Reset

- Resume Reset

Two power-reducing mode

- IDLE mode

- Power-down mode