8-BIT MICROCONTROLLER

 

 

 

FEATURES

8-bit CMOS microcontroller

High speed architecture of 4 clocks/machine cycle runs up to 40 MHz

Pin compatible with standard 80C52

Instruction-set compatible with MCS-51

64KB on-chip Mask-ROM

Four 8-bit I/O Ports

One extra 4-bit I/O port and Wait State control signal (available on 44-pin PLCC/QFP package)

Three 16-bit Timers

12 interrupt sources with two levels of priority

On-chip oscillator and clock circuitry

Two enhanced full duplex serial ports

64KB In-System Programmable Flash EPROM (APROM)

4KB Auxiliary Flash EPROM for loader program (LDROM)

256 bytes scratch-pad RAM

1KB on-chip SRAM for MOVX instruction

Programmable Watchdog Timer

Dual 16-bit Data Pointers

Software programmable access cycle to external RAM/peripherals   

Packages:

DIP 40: W77E516-25/40

PLCC 44: W77E516P-25/40

QFP 44: W77E516F-25/40

 

 

 

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