Microchip 25LC1024-I/SM 1Mbit SPI Serial EEPROM SOIC8

The Microchip 25LC1024-I/SM is a high-performance 1Mbit (1024Kbit) serial EEPROM memory device, designed for reliable data storage in industrial and embedded applications. Operating at a supply voltage range of 2.5V to 5.5V, this memory supports both byte-level and page-level write operations, offering flexibility for various data logging and parameter storage tasks. The device also includes advanced instructions for page, sector, and chip erase, typically found in Flash memory products, providing efficient memory management without compromising the simplicity of SPI communication.

Access to the memory is achieved through a standard SPI-compatible serial bus with clock input (SCK), data in (SI), and data out (SO) lines, controlled by a chip select input. The hold pin allows the host to pause communication, ideal for servicing higher-priority interrupts. With a maximum clock frequency of 20MHz (at 4.5V-5.5V), the device ensures fast data transfer, while its 256-byte page and 6ms internal write cycle time (max) optimize write efficiency.

Featuring robust power-on/off data protection circuitry, a write enable latch, and a write-protect pin, this EEPROM safeguards your data during power transitions and unauthorized writes. The device offers exceptional endurance of 1 million erase/write cycles (minimum) and data retention of over 200 years, ensuring long-term reliability. ESD protection of up to 4000V adds durability in harsh environments.

The EEPROM is housed in an 8-pin SOIJ package (SOIC-8) with surface mount mounting, suitable for compact PCB designs. It operates over an industrial temperature range of -40°C to +85°C, making it ideal for demanding applications. With a memory configuration of 128K x 8bit, this device is a versatile solution for storing configuration data, calibration parameters, and small application logs in automotive, industrial control, and consumer electronics.

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