256K-bit Serial-SPI EEPROM memory IC, organized as 32K x 8, supports 2.5V, 3.3V, and 5V operation with a maximum operating frequency of 20 MHz and 80 ns access time. This automotive-grade component features hardware data protection and 100-year data retention. It is housed in an 8-pin UDFN EP package (2mm x 3mm x 0.55mm max) for surface mounting, with a 0.5mm pin pitch. Operating temperature range is -40°C to 85°C.
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Microchip AT25256B-MAHL-T technical specifications.
| Basic Package Type | Non-Lead-Frame SMT |
| Package Family Name | DFN |
| Package/Case | UDFN EP |
| Package Description | Micro Dual Flat Package No Lead, Exposed Pad |
| Lead Shape | No Lead |
| Pin Count | 8 |
| PCB | 8 |
| Package Length (mm) | 2 |
| Package Width (mm) | 3 |
| Package Height (mm) | 0.55(Max) |
| Seated Plane Height (mm) | 0.55 |
| Pin Pitch (mm) | 0.5 |
| Package Material | Plastic |
| Mounting | Surface Mount |
| Jedec | MO-229 |
| Density | 256Kbit |
| Interface Type | Serial-SPI |
| Maximum Operating Frequency | 20MHz |
| Maximum Access Time | 80ns |
| Organization | 32Kx8 |
| Maximum Operating Current | 10mA |
| Typical Operating Supply Voltage | 2.5|3.3|5V |
| Density in Bits | 262144bit |
| Data Retention | 100(Min)Year |
| Hardware Data Protection | Yes |
| Max Operating Supply Voltage | 5.5V |
| Min Operating Supply Voltage | 1.8V |
| Min Operating Temperature | -40°C |
| Max Operating Temperature | 85°C |
| Cage Code | 60991 |
| EU RoHS | Yes |
| HTS Code | 8542310001 |
| Schedule B | 8542310000 |
| ECCN | EAR99 |
| Automotive | Yes |
| AEC Qualified | Yes |
| Radiation Hardening | No |
| RoHS Versions | 2011/65/EU, 2015/863 |
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