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Last update: 15 November 2004

IC function:256 kbit (256k×1) DRAM
Related components: 8 kbit (8k×1) DRAM, 16 kbit (16k×1) DRAM, 64 kbit (64k×1) DRAM, 1 Mbit (1M×1) DRAM

Component documentation
IC numberManufacturerDocumentation
MB81256FujitsuNot available
HM50256HitachiNot available
MN41256Matsushita (Panasonic)Not available
µPD41256NECNot available
MSM41256OkiNot available
KM41256, KM41256ASamsungNot available
LH21256SharpNot available
TMS4256Texas InstrumentsNot available
TMM41256ToshibaNot available
HYB41256SiemensNot available
LM33256SanyoNot available

Component versions
IC numberPackageAccess time
MB81256-15, HM50256P-15, MN41256-15, D41256C-15, MSM41256-15, KM41256-15, KM41256AP-15, LH21256-15, TMS4256-15NL, TMM41256P-15, HYB41256-15, LM33256G-1516-pin DIP150 ns
HYB41256-12, LM33256G-1216-pin DIP120 ns

Component part numbers
CBM part numberCBM part description
380223-01IC MEM DRAM 256KX1BIT 150ns
380223-03256K X 1 DRAMs 120ns
380223-04256K X 1 DRAMs 100ns
380223-05256K X 1 DRAMs 80ns
390026-01256K X 1 BIT DYNAMIC RAM

Positions
DevicePositionsPackageAccess time
A500 Rev. 5U16..U31DIP150 ns
A2000-CR Rev. 4U501..U532DIP150 ns
A501 Rev. 5U48..U63DIP150 ns
A2052U15..U78DIP150 ns
A1060 main boardU1..U8DIP150 ns
A2088U12..U27DIP150 ns
A2286 sandwich boardU38, U39, U44, U45DIP120 ns
PC-I 5MHzU17..U32DIP150 ns
PC-I 10MHzU17..U32DIP120 ns
PC10 combined boardU22..U30DIP150 ns
PC10 256k RAM expanderU1..U9DIP150 ns
PC10 384k RAM expanderU1..U9DIP150 ns
PC10-III Rev. 5U305..U320DIP120 ns
PC60-IIIU1, U2, U10, U11, U23, U24, U35, U36DIP100 ns

Pinout
PinTypeName
1InputAddress
2InputDIN
3Input_WE
4Input_RAS
5..7InputAddress
8PowerVCC
9..13InputAddress
14OutputDOUT
15Input_CAS
16PowerGND

Copyright © 2003-2004 Ronald van Dijk - All rights reserved