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Last update: 29 March 2006

IC number:27C128
IC function:128 kbit (16k×8) EPROM
Related components:64 kbit (8k×8) EPROM, 256 kbit (32k×8) EPROM, 1 Mbit (128k×8) EPROM

Component documentation
IC numberManufacturerDocumentation
TMS27C128Texas InstrumentsWeb page, Datasheet (PDF)

Component versions
IC numberPackageAccess time
TMS27C128-120JL28-pin Ceramic DIP120 ns

Programmed components
IC numberCBM part numberCBM part descriptionChip descriptionChecksum
TMS27C128-120JL390337-02EPROM1, VGA BIOS - LOW (27128-15)PC40-III VGA BIOS V2.0 lowB065
TMS27C128-120JL390338-02EPROM2, VGA BIOS - HIGH (27128-15)PC40-III VGA BIOS V2.0 high389B
TMS27C128-120JL390339-04PC40-III BIOS V2.03 low03BC
TMS27C128-120JL390340-04PC40-III BIOS V2.03 high3344

Positions
DevicePositionsPackageSoftware
PC40-IIIU1101DIP390339-04 (03BC)
PC40-IIIU1102DIP390340-04 (3344)
PC40-IIIU108DIP390337-02 (B065)
PC40-IIIU109DIP390338-02 (389B)

Pinout
PinTypeName
1PowerVPP
2InputA12
3..10InputA7..A0
11..13OutputDQ0..DQ2
14PowerGND
15..19OutputDQ3..DQ7
20InputE_
21InputA10
22InputG_
23InputA11
24..25InputA9..A8
26InputA13
27InputPGM_
28PowerVCC

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