GENERAL DESCRIPTION

The single-chip 8-bit microcontroller is manufactured in MXICs advanced CMOS process. This device uses the

same powerful instruction set, has the same architecture, and is pin-to-pin compatible with the existing 80C51.

FEATURE

• High performance CMOS MTP ROM CPU

• Operation Voltage 5V

• Up to 40MHz operation (3.5MHz to 40MHz)

• Three 16-bit timer/counters

• 256 Bytes of on-chip data RAM

• 64 Kbytes on-chip Flash memory

• 32 Programmable I/O lines

• 6 interrupt Sources

• Code protection

• Two priority levels

• Power saving Idle and power down modes

• 64 K external program memory space

• 64 K external data memory space

• Four 8-bit I/O ports

• Full-duplex enhanced UART compatible with the standard 80C51 and the 80C52