User`s manual

NEC

Eproms
Part # Volts Type Menu Size, notes
µPD2716D 25.0 N MB 2K
µPD2732D 25.0 N MC 4K
µPD2732C 25.0 N MC 4K
µPD2732AD 21.0 N MD 4K
µPD27C32D 21.0 N MD 4K
µPD2764D 21.0 N ME 8K
µPD2764C 21.0 N ME 8K
µPD27C64D 21.0 C ME 8K
µPD27C64C 21.0 C ME 8K
µPD27128D 21.0 N MF 16K
µPD27128C 21.0 N MF 16K
µPD27256D 21.0 N M8 32K
µPD27256C 21.0 N M8 32K
µPD27C256A 12.5 C M% 32K
µPD27C256D 21.0 C M8 32K
µPD27C256C 21.0 C M8 32K
µPD27C512D 12.5 C M5 64K
µD27C1000A 12.5 C M= 128K Note 7*
µPD27C1001A 12.5 C M= 128K Note 6*
µPD27C1024 12.5 C M= 64Kx16 Note 1
µPD27C2001 12.5 C call 256K Note 6*
*Note NEC µPD27C1001 is same “pinout” as OKI MSM271000 or a
Toshiba TC571000. NEC apparently has the 1000 and the 1001 reversed
in their part numbers. On an NEC part, the “1000” has a non–standard
JEDEC pinout, and the “1001” has the standard JEDEC pinout. Pins 2
and 24 (A16 and –OE on a standard JEDEC part) are reversed.
Model 9000 Appendix B
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