| Part Numbers | Manufacturer Name | Datasheet | Format - Memory | Memory Type | Memory Size | Speed | Interface | Voltage - Supply | Operating Temperature | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|
| AT28C256-20UM/883 | ATMEL CORP | EEPROMs - Parallel | EEPROM | 256K (32K x 8) | 200ns | Parallel | 4.5 V ~ 5.5 V | -55?C ~ 125?C | 28-CBPGA | |
| AT28C256-25UM/883 | ATMEL CORP | EEPROMs - Parallel | EEPROM | 256K (32K x 8) | 250ns | Parallel | 4.5 V ~ 5.5 V | -55?C ~ 125?C | 28-CBPGA | |
| AT28C256E-20UM/883 | ATMEL CORP | EEPROMs - Parallel | EEPROM | 256K (32K x 8) | 200ns | Parallel | 4.5 V ~ 5.5 V | -55?C ~ 125?C | 28-CBPGA | |
| AT28HC256-12UM/883 | ATMEL CORP | EEPROMs - Parallel | EEPROM | 256K (32K x 8) | 120ns | Parallel | 4.5 V ~ 5.5 V | -55?C ~ 125?C | 28-CBPGA | |
| AT28HC256-90UM/883 | ATMEL CORP | EEPROMs - Parallel | EEPROM | 256K (32K x 8) | 90ns | Parallel | 4.5 V ~ 5.5 V | -55?C ~ 125?C | 28-CBPGA | |
| AT28HC256E-12UM/883 | ATMEL CORP | EEPROMs - Parallel | EEPROM | 256K (32K x 8) | 120ns | Parallel | 4.5 V ~ 5.5 V | -55?C ~ 125?C | 28-CBPGA | |
| AT28HC256F-12UM/883 | ATMEL CORP | EEPROMs - Parallel | EEPROM | 256K (32K x 8) | 120ns | Parallel | 4.5 V ~ 5.5 V | -55?C ~ 125?C | 28-CBPGA | |
| AT28HC256E-90UM/883 | ATMEL CORP | EEPROMs - Parallel | EEPROM | 256K (32K x 8) | 90ns | Parallel | 4.5 V ~ 5.5 V | -55?C ~ 125?C | 28-CBPGA | |
| AT28HC256F-90UM/883 | ATMEL CORP | EEPROMs - Parallel | EEPROM | 256K (32K x 8) | 90ns | Parallel | 4.5 V ~ 5.5 V | -55?C ~ 125?C | 28-CBPGA | |
| AT28C256E-25UM/883 | ATMEL CORP | EEPROMs - Parallel | EEPROM | 256K (32K x 8) | 250ns | Parallel | 4.5 V ~ 5.5 V | -55?C ~ 125?C | 28-CBPGA |
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