W77C516 Datasheet 8-BIT Microcontroller

Manufacturer: Winbond

Overview: Preliminary W77C516 8 BIT MICROCONTROLLER GENERAL.

Datasheet Details

The W77C516 is a fast 8051 compatible microcontroller with a redesigned processor core without wasted clock and memory cycles.

As a result, it executes every 8051 instruction faster than the original 8051 for the same crystal speed.

Typically, the instruction executing time of W77C516 is 1.5 to 3 times faster then that of traditional 8051, depending on the type of instruction.

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 cl.