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WESTERN DIGITAL
c oRp o R A T / oN
WD4020 ROMless N-Channel Microcontrollers
FEATURES
LOW COST EXACT CIRCUIT EQUIVALENT OF WD4200 STANDARD 40-PIN DUAL-IN-LINE PACKAGE INTERFACES WITH STANDARD PROM OR ROM 64 x 4 RAM, ADDRESSES UP TO lK x 8 ROM POWERFUL INSTRUCTION SET TRUE VECTORED INTERRUPT, PLUS RESTART THREE-LEVEL SUBROUTINE STACK 4.01's INSTRUCTION TIME SINGLE SUPPLY OPERATION (4.5 V TO 6.3 V) INTERNAL TIME-BASE COUNTER FOR REALTIME PROCESSING INTERNAL BINARY COUNTER REGISTER WITH SERIAL 1/0 CAPABILITY
SOFTWARE/HARDWARE COMPATIBLE WITH OTHER ~
MEMBERS OF WD4000 FAMILY
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GENERAL DESCRfPTfON
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The WD4020 ROMless Microcontrollers are members of the
Control Oriented Processor (COP) family, fabricated using
N-channel, silicon gate MOS technology.
WD4020 Datasheet
