| PartNumber | AT28HC256-12DM/883 | AT28HC256-12FM/883 | AT28HC256-12JC |
| Description | EEPROM 256K 5V SDP - 120NS | EEPROM 256K 5V SDP - 120NS | EEPROM 256K 5V SDP- 120NS COM TEMP |
| Manufacturer | Microchip | Adesto Technologies | Microchip |
| Product Category | EEPROM | EEPROM | EEPROM |
| RoHS | N | - | N |
| Mounting Style | SMD/SMT | - | SMD/SMT |
| Package / Case | DBGA2-8 | UDFN-8 | PLCC-32 |
| Memory Size | 2 kbit | - | 256 kbit |
| Organization | 256 x 8, 128 x 16 | - | 32 k x 8 |
| Interface Type | Serial, 3-Wire, Microwire | - | Serial, 4-Wire, SDI, SPI |
| Data Retention | 100 Year | - | 10 Year |
| Maximum Clock Frequency | 0.25 MHz | - | - |
| Supply Current Max | 2 mA | - | 80 mA |
| Supply Voltage Min | 1.8 V | - | 4.5 V |
| Supply Voltage Max | 5.5 V | - | 5.5 V |
| Minimum Operating Temperature | - 40 C | - | 0 C |
| Maximum Operating Temperature | + 85 C | - | + 70 C |
| Height | 0.66 mm | - | 2.79 mm (Min) |
| Length | 2 mm | - | 14.1 mm (Max) |
| Width | 1.5 mm | - | 11.51 mm (Max) |
| Brand | Microchip Technology / Atmel | Adesto Technologies | Microchip Technology / Atmel |
| Operating Supply Current | 2 mA | - | 80 mA |
| Operating Supply Voltage | 2.5 V, 3.3 V, 5 V | - | 5 V |
| Product Type | EEPROM | EEPROM | EEPROM |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Series | - | RM25C256DS | AT28HC256 |
| Packaging | - | Reel | - |
| Factory Pack Quantity | - | 5000 | 32 |
| Tradename | - | Mavriq | - |
| Access Time | - | - | 70 ns |
| Output Enable Access Time | - | - | 50 ns |
| Programming Voltage | - | - | 4.5 V to 5.5 V |