25AA010AT-I/MS

The Microchip Technology 25AA010AT-I/MS is a 1 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) accessed via a Serial Peripheral Interface (SPI) compatible serial bus. It operates with a maximum clock frequency of 10 MHz and supports a wide voltage range from 1.8V to 5.5V.

This EEPROM offers a memory organization of 128 x 8 bits and features write protection mechanisms, including a write-protect pin and power-on/off data protection circuitry. It boasts high reliability with an endurance of 1,000,000 erase/write cycles and data retention exceeding 200 years. The device is available in an 8-MSOP surface mount package.

Key electrical characteristics include a maximum write current of 5 mA at 5.5V and 10 MHz, a read current of 5 mA at 5.5V and 10 MHz, and a low standby current of 5 µA at 5.5V. The self-timed erase and write cycles complete within a maximum of 5 ms. Block write protection allows for protecting none, 1/4, 1/2, or all of the array.

Designed for industrial applications, it operates within a temperature range of -40°C to 85°C. The SPI interface requires clock (SCK), data in (SI), and data out (SO) lines, with device access controlled by a Chip Select (CS) input. A HOLD pin is available to pause communication.