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| PartNumber | AT28HC256-90FM/883 | AT28HC256-90DM/883 | AT28HC256-90FM/883-023 |
| Description | EEPROM 256K 5V SDP - 90NS FLATPACK 883C | EEPROM 256K 5V SDP - 90NS 883C | EEPROM 90NS, FLATPACK, 883C; LEV B COMPLIANT |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | EEPROM | EEPROM | EEPROM |
| RoHS | N | N | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | DBGA2-8 | DBGA2-8 | CSP-5 |
| Memory Size | 2 kbit | 2 kbit | 8 kbit |
| Organization | 256 x 8, 128 x 16 | 256 x 8, 128 x 16 | 1 k x 8 |
| Interface Type | Serial, 3-Wire, Microwire | Serial, 3-Wire, Microwire | Serial, 2-Wire, I2C |
| Data Retention | 100 Year | 100 Year | 200 Year |
| Maximum Clock Frequency | 0.25 MHz | 0.25 MHz | - |
| Supply Current Max | 2 mA | 2 mA | - |
| Supply Voltage Min | 1.8 V | 1.8 V | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Height | 0.66 mm | 0.66 mm | - |
| Length | 2 mm | 2 mm | - |
| Width | 1.5 mm | 1.5 mm | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology |
| Operating Supply Current | 2 mA | 2 mA | - |
| Operating Supply Voltage | 2.5 V, 3.3 V, 5 V | 2.5 V, 3.3 V, 5 V | - |
| Product Type | EEPROM | EEPROM | EEPROM |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Packaging | - | - | Reel |
| Factory Pack Quantity | - | - | 5000 |