INITIALIZING_CMOS_STORAGE

Published:2009/7/5 20:42:00 Author:May | From:SeekIC

Simple RC circuit initializes all storage elements (flip-flops, registers, and counters) of CMOS system to all 1s (switch at left) or all 0s (switch at right) when power supply is turned on. For most CMOS storage elements, 30 pF for C ensures setting or resetting when power is applied by closing switch. If power supply is turned on while supply line is directly connected,C should be 1000 to 1500 pF Article also shows how to get set or reset function after initialization by uslng pairof CD4016A or CD4066A transmission gates,-o,Bismarck,A Simple Method for lnitiaizing CMOS Storage Elements,EDN Magazine, Feb.20,1974.p83



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/INITIALIZING_CMOS_STORAGE.html

Print this Page | Comments | Reading(3)