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| PartNumber | AT25256B-SSHL-B | AT25256B-SSH | AT25256B-SSHL |
| Description | EEPROM 256Kbit; SPI Bus High Spd; Mode 0 & 3 | ||
| Manufacturer | Microchip | - | - |
| Product Category | EEPROM | - | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | SOIC-8 | - | - |
| Memory Size | 256 kbit | - | - |
| Organization | 32 k x 8 | - | - |
| Interface Type | Serial, 4-Wire, SDI, SPI | - | - |
| Access Time | 80 ns | - | - |
| Data Retention | 100 Year | - | - |
| Maximum Clock Frequency | 5 MHz | - | - |
| Supply Current Max | 10 mA | - | - |
| Supply Voltage Min | 1.8 V | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Series | AT25256B | - | - |
| Packaging | Tube | - | - |
| Height | 1.48 mm (Max) | - | - |
| Length | 4.98 mm (Max) | - | - |
| Width | 3.99 mm (Max) | - | - |
| Brand | Microchip Technology / Atmel | - | - |
| Operating Supply Current | 9 mA | - | - |
| Operating Supply Voltage | 1.8 V to 5.5 V | - | - |
| Product Type | EEPROM | - | - |
| Factory Pack Quantity | 100 | - | - |
| Subcategory | Memory & Data Storage | - | - |
| Unit Weight | 0.019048 oz | - | - |