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 Por...

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