| PartNumber | AT28HC256F-90JC | AT28HC256F-90JA | AT28HC256F-90JI |
| Description | EEPROM 256K FAST PROG SDP - 90NS COM TEMP | IC EEPROM 256K PARALLEL 32PLCC | IC EEPROM 256K PARALLEL 32PLCC |
| Manufacturer | Microchip | - | - |
| Product Category | EEPROM | - | - |
| RoHS | N | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | PLCC-32 | - | - |
| Memory Size | 256 kbit | - | - |
| Organization | 32 k x 8 | - | - |
| Interface Type | Serial, 4-Wire, SDI, SPI | - | - |
| Access Time | 70 ns | - | - |
| Data Retention | 10 Year | - | - |
| Supply Current Max | 80 mA | - | - |
| Supply Voltage Min | 4.5 V | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Minimum Operating Temperature | 0 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Series | AT28HC256 | - | - |
| Height | 2.79 mm (Min) | - | - |
| Length | 14.1 mm (Max) | - | - |
| Width | 11.51 mm (Max) | - | - |
| Brand | Microchip Technology / Atmel | - | - |
| Operating Supply Current | 80 mA | - | - |
| Operating Supply Voltage | 5 V | - | - |
| Output Enable Access Time | 40 ns | - | - |
| Product Type | EEPROM | - | - |
| Programming Voltage | 4.5 V to 5.5 V | - | - |
| Factory Pack Quantity | 32 | - | - |
| Subcategory | Memory & Data Storage | - | - |