PROM_CONTROLLED_COUNTER

Published:2009/7/13 4:16:00 Author:May | From:SeekIC

Universal counter can be set to count in any desired se-quence ranging from simple binary to pseudorandom, using only one programmable read-only memory chip and one 74174 edge-triggered flip-flop register chip, Version shown is 6-bit 64-state counter for which PROM is organized in 64 8-bit words. Pull-up resistors are required. Article covers application details, in-cluding expansion techniques. PR0M outputs serve as data input to register chip, and register outputs provide PR0M address inputs. -T. M. Farr, Jr., Read-only Memory Controls Universal Counter, EDN Magazine, May 5, 1976, p 114.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Measuring_and_Test_Circuit/PROM_CONTROLLED_COUNTER.html

Print this Page | Comments | Reading(3)