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Last update: 25 October 2004

IC function:256 kbit (64k×4) DRAM
Related components: 64 kbit (16k×4) DRAM, 1 Mbit (256k×4) DRAM, 4 Mbit (1M×4) DRAM

Component documentation
IC numberManufacturerDocumentation
HM50464HitachiNot available
MB81464FujitsuNot available
D41464NECNot available
TMS4464Texas InstrumentsNot available
LH2464SharpNot available
M41464OkiNot available
MN41464APanasonicNot available

Component versions
IC numberAccess timePackage
HM50464P-15, MB81464-15, D41464C-15, TMS4464JL-15, TMS4464NL-15150 ns18-pin DIP
LH2464-12, M41464-12120 ns18-pin DIP
D41464C-10, TMS4464-10NL100 ns18-pin DIP
MN41464A-8080 ns18-pin DIP
MN41464AZ-8080 ns20-pin ZIP

Component part numbers
CBM part numberCBM part description
390083-02MEM DRAM 64KX4 BIT 150NS
390083-0464K X 4 DRAMs 100ns
390083-0564K X 4 DRAMs 80ns
390083-0764 X 4 D-RAM
380256-01DRAM 64K X 4, 120 ns

Positions
DevicePositionsPositions (not installed)PackageAccess time
A1000 main boardU1B..U1E, U2B..U2EDIP150 ns
A1000 piggyback boardU1B..U1E, U2B..U2EDIP150 ns
A1050 RAM expansionU1..U8DIP150 ns
A1060 interface boardU19..U22DIP150 ns
A2088U32..U35DIP150 ns
A2286 main boardU62..U65DIP150 ns
A2386U406..U409ZIP80 ns
PC-IU66, U67DIP150 ns
PC10 256k RAM expanderU12..U15DIP150 ns
PC10 384k RAM expanderU12..U15DIP150 ns
PC10-III Rev. 5 or 6U605, U606DIP100 ns
PC10-III Rev. 5U321..U324DIP100 ns
PC10-III Rev. 6U309..U312DIP120 ns
PC30-IIIU709, U710, U713, U714DIP100 ns
PC40-IIIU118..U125DIP100 ns
PC60-IIIU114, U115, U121, U122, U130, U131, U136, U137DIP100 ns
C64CU10, U11DIP150 ns
C128DCRU23, U25, U38..U41DIP150 ns

Pinout DIP package
PinTypeName
1Input_OE
2..3I/OData
4Input_WE
5Input_RAS
6..8InputAddress
9PowerVCC
10..14InputAddress
15I/OData
16Input_CAS
17I/OData
18PowerGND

Pinout ZIP package
PinTypeName
1I/OData
2Input_CAS
3I/OData
4PowerGND
5Input_OE
6..7I/OData
8Input_WE
9Input_RAS
10..11N/CNC
12..14InputAddress
15PowerVCC
16..20InputAddress

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