uPD546 Overview
Key Specifications
Description
The NEC uCOM - 43 is a 4- bit parallel central processing unit that forms a single chip microcomputer especially suited for a broad range of low cost and sophisticated controller applications. The uCOM-43 contains all the necessary system functional blocks for a single chip microcomputer, including a 4- bit parallel ALU, 2 , 000 by 8 - bit program ROM, 96 by 4-bit data RAM, 35 input/output channels, a programmable interval timer , interrupt handling circuits, a clock generator and control circuits.
Key Features
- Single chip microcomputer for controller applications
- 2,000 by 8-bit ROM for program storage
- 96 by 4- bit RAM for data storage
- 35 input/output channels, with single bit manipulation and 4-bit parallel processing capabilities for all ports
- Six 4-bit working registers in a portion of RAM
