描述 Description

The MVI MV20556 is an 8 - bit single chip microcontroller. It provides hardware features and powerful instruction set that are necessary to make it a versatile and cost effective controller for mouse applications which needs up to 4K byte internal memory either for program or for data and mixed.

A serial input / output port is provided for I/O expansion, Inter - processor communications, full duplex UART.

特性 Features

■ General 8051 instruction family compatible

■ Operate at voltage 5.0V.

■ No External Memory is supported

■ 8 bit bus I/O ports

■ 4 K byte ROM

■ 128 byte RAM

■ 128 byte depth stack

■ Two 16 bit Timers (Event Counters)

■ 15 programmable I/O pins

■ Five interrupt sources

■ Programmable serial UART channel

■ Direct LED drive output

■ Bit operation instructions

■ Page free jumps

■ 8 - bit Unsigned Division

■ 8 - bit Unsigned Multiply

■ BCD arithmatic

■ Direct Addressing

■ Indirect Addressing

■ Nested Interrupt

■ Two priority level interrupt

■ A full duplex serial I/O port

■ Working at 16/25/40 MHz Clock

■ Full static operation: 3 MHz through 16 MHz