4-BIT SINGLE CHIP MICROCOMPUTER
NEe Microcomputers, Inc.
NEe
J£COM-45
4-81T SINGLE CHIP MICROCOMPUTERS
DESC RIPTI ON
The IlCOM-45 4-bit single chip ...
Description
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.
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·ln Clock Signal Generation Circuitry Built·ln RESET Circuitry Single Power Supply Low Power Consumption PMOS or CMOS Technologies 28-Pin Plastic DIP Choice of 5 Diff...
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