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UCOM-45 Datasheet 4-BIT SINGLE CHIP MICROCOMPUTER

Manufacturer: NEC (now Renesas Electronics)

Overview

NEe Microcomputers, Inc.

NEe J£COM-45 4-81T SINGLE CHIP MICROCOMPUTERS DESC RIPTI ON The IlCOM-45 4-bit single chip microcomputers described below comprise the lower-performance portion of the IlCOM-4 Microcomputer Family.

They are dis· tinguished from other IlCOM-4 products by their smaller ROM and RAM, and their reduced 21 line I/O capability.

Key Features

  • 1000 x 8 ROM (IlPD550 and IlPD550L have 640 x 8 ROM).
  • 32 x 4 RAM.
  • lOlls Instruction Cycle Time, Typical.
  • 58 Powerful Instructions - Table Look.
  • Up Capability with CZP and JPA Instructions - Single Bit Manipulation of RAM or I/O Ports.
  • l-Level Subroutine Stack.
  • Extensive I/O Calla~iI ity - One 4-Bit Input Ports - Two 4-Bit I/O Ports - Two 4-Bit Output Ports - One l-Bit Output Port.
  • Software Testable Interrupt.
  • Built.