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| PartNumber | 25AA256-E/P | 25AA256-E/MF | 25AA256 |
| Description | EEPROM 256k, 32K X 8, 1.8V SER EE EXT | EEPROM 256k, 32K X 8, 1.8V SER EE EXT | |
| Manufacturer | Microchip | Microchip | Microchip Technology |
| Product Category | EEPROM | EEPROM | Memory |
| RoHS | Y | Y | - |
| Mounting Style | Through Hole | SMD/SMT | - |
| Package / Case | PDIP-8 | DFN-8 | - |
| Memory Size | 256 kbit | 256 kbit | 256K (32K x 8) |
| Organization | 32 k x 8 | 32 k x 8 | - |
| Interface Type | Serial, 4-Wire, SDI, SPI | Serial, 4-Wire, SDI, SPI | - |
| Data Retention | 200 Year | 200 Year | - |
| Packaging | Tube | Tube | Tube Alternate Packaging |
| Brand | Microchip Technology | Microchip Technology | - |
| Product Type | EEPROM | EEPROM | - |
| Factory Pack Quantity | 60 | 60 | - |
| Subcategory | Memory & Data Storage | Memory & Data Storage | - |
| Unit Weight | 0.032805 oz | 0.001319 oz | - |
| Series | - | - | - |
| Package Case | - | - | 8-VDFN Exposed Pad |
| Operating Temperature | - | - | -40°C ~ 125°C (TA) |
| Interface | - | - | SPI Serial |
| Voltage Supply | - | - | 1.8 V ~ 5.5 V |
| Supplier Device Package | - | - | 8-DFN-S (6x5) |
| Memory Type | - | - | EEPROM |
| Speed | - | - | 3MHZ, 5MHZ, 10MHZ |
| Format Memory | - | - | EEPROMs - Serial |