Description
The W78C51D microcontroller supplies a wider frequency and supply voltage range than most 8-bit microcontrollers on the market.
Features
- Fully static design.
- Supply voltage of 4.5V to 5.5V.
- DC-40 MHz operation.
- 128 bytes of on-chip scratchpad RAM.
- 4K bytes of on-chip mask ROM.
- 64K bytes program memory address space.
- 64K bytes data memory address space.
- Four 8-bit bidirectional ports.
- Two 16-bit timer/counters.
- One full duplex serial port.
- Seven-source, two-level interrupt capability.
- One extra 4-bit bit-addressable I/O por.
W78-C51D.pdf