| PartNumber | AT24C256C-MAHL-E | AT24C256C-SSHL-B | AT24C256C-MAHL-T |
| Description | EEPROM 1.7-5.5V, 1MHz, Ind Tmp, 8-UDFN | EEPROM 256K (32K X 8), 2-WI 1.8V | EEPROM 256K (32K X 8) 2-WI 1.8V |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | EEPROM | EEPROM | EEPROM |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | UDFN-8 | SOIC-8 | UDFN-8 |
| Memory Size | 256 kbit | 256 kbit | 256 kbit |
| Organization | 32 k x 8 | 32 k x 8 | 32 k x 8 |
| Interface Type | Serial, 2-Wire, I2C | Serial, 2-Wire, I2C | Serial, 2-Wire, I2C |
| Data Retention | 100 Year | 40 Year | 40 Year |
| Maximum Clock Frequency | 1 MHz | 1 MHz | 1 MHz |
| Supply Current Max | 3 mA | 3 mA | 3 mA |
| Supply Voltage Min | 1.7 V | 1.7 V | 1.7 V |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Series | AT24C256C | AT24C256C | AT24C256C |
| Packaging | Reel | Tube | Reel |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Operating Supply Voltage | 1.7 V to 5.5 V | 1.7 V to 5.5 V | 1.7 V to 5.5 V |
| Product Type | EEPROM | EEPROM | EEPROM |
| Factory Pack Quantity | 15000 | 100 | 5000 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Access Time | - | 550 ns | - |
| Height | - | 1.48 mm (Max) | - |
| Length | - | 4.98 mm (Max) | - |
| Width | - | 3.99 mm (Max) | - |
| Operating Supply Current | - | 3 mA | - |
| Unit Weight | - | 0.019048 oz | 0.000335 oz |