The Microchip AT25040B-MAPD-E is a 4 Kb Serial EEPROM utilizing theindustry standard Serial Peripheral Interface (SPI) compatible serial bus. Thedevice is organized as one block of 512 x 8-bit and is optimized for use in consumer electronics, industrial, medical,and automotive applications where reliable and dependable nonvolatile memorystorage is essential. Software write protection allows the user to protect ¼,½, or the entire memory array. A hardware write protect pin is also provided,which additionally protects against inadvertent writes to the status register. The EEPROM is available in a variety of space-savingpackaging options.
For product comparison, please consider:25AA040A,25LC040A
Feature
- 512 x 8-bit (1 Kbit)
- Serial Peripheral Interface (SPI) Compatible
- Supports SPI modes 0 and 3
- Up to 20 MHz clock frequency
- Self-Timed Erase and Write Cycles (5 ms max.)
- Low Power Consumption
- Read current: 5mA (Max) at 5 MHz
- Write current: 5 mA (Max) at 5 MHz
- Standby current: 3.5 uA (Max) at 5 V
- Block Write Protection: Protect 1/4, 1/2 or Entire Array
- More than 1 million erase/write cycles
- Data retention 100 years
- Temperature Ranges Available
- Automotive Grade 1 : -40°C to 125°C
- Automotive Grade 2 :-40°C to 105°C
- Automotive Grade 3 / Industrial: -40°C to 85°C
- Automotive AECQ-100 Qualified1
- Factory Programming Available
- Available in standard packages including 8-leadSOIC, and advanced packages including 8-lead TSSOP, 8-lead 2x3 DFN, and 8-ball VFBGA
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1Consult Automotive datasheet for device specification and ordering part number
