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MC4044 Phase-Frequency Detector used in Commodore and Amiga equipment

IC numbers

MC4044

IC function

Phase-Frequency Detector

Component documentation

IC number	Manufacturer	Documentation
MC4044	Motorola	Not available

Component versions

IC number	Package	CBM part number	CBM part description
MC4044P	14-pin DIP	906128-01	MC4044

Positions

Device	Position	Package
C64 Original board	U32	DIP
C64 A board	U32	DIP

Pinout

Pin	Function	Name
1	Phase Frequency Detector #1, #2	R
2	Phase Frequency Detector #1	D1
3	Phase Frequency Detector #1, #2	V
4	Chanrge Pump	PU
5	Chanrge Pump	UF
6	Phase Frequency Detector #2	D2
7	All	Gnd
8	Amplifier	Output
9	Amplifier	Amp In
10	Chanrge Pump	DF
11	Chanrge Pump	PD
12	Phase Frequency Detector #2	U2
13	Phase Frequency Detector #1	U1
14	All	VCC

Copyright © 2006 Ronald van Dijk - All rights reserved
Last update: 13 September 2006