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Database Client Software 2.0 Manual
» Chip Identification

Help Identifying Chips

Part #'s are often prefixed with a few characters indicating the maker name and type of part. Sometimes multiple manufacturers will use the same part name or will omit the alpha-portion of the prefix, but they can generally still be distinguished by a company logo or by the format of the datecode.

Common Prefixes, Manufacturers, and Chip Types
AM27 EPROMs
MB74 Discrete parts
MB83 Mask ROMs
MB84 SRAMs
MBM27 EPROMs
GD74 Discrete parts
GM76 SRAMs
CD74 Discrete parts
HD74 Discrete parts
HM62 SRAMs
HN27, HN48 EPROMs
HN61, HN62 Mask ROMs
HY61, HY62 SRAMs
D27, P27 EPROMs
MX23 Mask ROMs
RO9 Mask ROMs
M5L27, M5M27 EPROMs
M5M23 Mask ROMs
M5M51 SRAMs
M74 Discrete parts
MS62 SRAMs
MC74, SN74 Discrete parts
MCM60 SRAMs
DM74 Discrete parts
NM27 EPROMs
D23, UPD23 Mask ROMs
D27 EPROMs
D43 SRAMs
D74 Discrete parts
M27 EPROMs
M38 Mask ROMs
M51 SRAMs
M74 Discrete parts
MN23 Mask ROMs
MN44 SRAMs
MN74 Discrete parts
FCB61 SRAMs
PC74 Discrete parts
RP23, RP2D, RP53 Mask ROMs
BR62, XLJ62 SRAMs
KM23 Mask ROMs
KM62 SRAMs
KS74 Discrete parts
LC35, LC36 SRAMs
LC74 Discrete parts
SRM20 SRAMs
SP74 Discrete parts
LH23, LH53 Mask ROMs
LH51, LH52 SRAMs
LR74 Discrete parts
LH57 EPROMs
LROG Chip-on-Board PCBs
CXK38 Mask ROMs
CXK58 SRAMs
M27 EPROMs
T74 Discrete parts
SN74 Discrete parts
TMS27 EPROMs
TC53, TMM23 Mask ROMs
TC55, TMM20 SRAMs
TC57, TMM24 EPROMs
TC74 Discrete parts
V63, V65 SRAMs
WR25 Mask ROM
X24 EEPROMs
YM22, YM23 Mask ROMs

Common Mask ROMs

Here is a small selection of commonly used mask ROMs. In the pictures, the colored rectangles show the different meanings: Part #, Part Suffix, ROM Label, DateCode

RP23256E
RP23256E
LH231G
LH231G
MN231001
MN231001
TC531003CP
TC531003CP
UPD23C2013C
UPD23C2013C
M38128B
M38128B
[IM231003]
[IM231003]
[UPD23C1010]
[UPD23C1010]
[UPD23C1013]
[UPD23C1013]
[MB831002]
[MB831002]
831000-15
831000-15
HN62302BP
HN62302BP


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