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| PartNumber | AT28HC64B-12SC | AT28HC64B-12SA | AT28HC64B-12SI |
| Description | EEPROM 1M 5V SDP- 120NS COM TEMP | IC EEPROM 64K PARALLEL 28SOIC | IC EEPROM 64K PARALLEL 28SOIC |
| Manufacturer | Microchip | - | - |
| Product Category | EEPROM | - | - |
| RoHS | N | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | SOIC-28 | - | - |
| Memory Size | 64 kbit | - | - |
| Organization | 8 k x 8 | - | - |
| Interface Type | Serial, 4-Wire, SDI, SPI | - | - |
| Access Time | 55 ns | - | - |
| Data Retention | 10 Year | - | - |
| Supply Current Max | 40 mA | - | - |
| Supply Voltage Min | 4.5 V | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Minimum Operating Temperature | 0 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Series | AT28HC64B | - | - |
| Height | 2.35 mm (Max) | - | - |
| Length | 18.1 mm (Max) | - | - |
| Width | 7.6 mm (Max) | - | - |
| Brand | Microchip Technology | - | - |
| Operating Supply Current | 40 mA | - | - |
| Operating Supply Voltage | 5 V | - | - |
| Output Enable Access Time | 50 ns | - | - |
| Product Type | EEPROM | - | - |
| Programming Voltage | 4.5 V to 5.5 V | - | - |
| Factory Pack Quantity | 27 | - | - |
| Subcategory | Memory & Data Storage | - | - |