Microchip 64 kB EEPROM 8-Pin SOP Serial-SPI Memory, 80 ns Access, 1.8-5.5 V, 20 MHz AT25640B-XHL-B

Microchip AT25640B-XHL-B is a high-reliability 64 kB (8K x 8 bits) electrically erasable programmable read-only memory (EEPROM) device with a serial SPI interface. Designed for industrial and commercial applications, it supports low power operation with supply voltages from 1.8 V to 5.5 V and a maximum clock frequency of 20 MHz. The 8-pin SOP surface mount package is ideal for compact system integration.

This EEPROM supports SPI modes 0 and 3, providing interface flexibility. It includes 32-byte page mode support to enhance data write efficiency and offers block write protection configurable to protect one-quarter, one-half, or the entire memory array. The device features a write protect pin and supports hardware and software data protection instructions to prevent accidental data corruption.

The device ensures data retention for 100 years and endurance of one million write cycles, making it suitable for applications requiring long-term data stability and frequent updates. It operates reliably over a wide temperature range from -40°C to +85°C.

With a maximum random access time of 80 ns and a low supply current of 10 mA, the AT25640B-XHL-B is optimized for energy-efficient embedded system designs. Its compact 1.5 mm height SOP package facilitates easy mounting on printed circuit boards in space-limited industrial and commercial equipment.

Applications include industrial automation, instrumentation, communications, and consumer electronics requiring non-volatile, durable memory solutions. The device meets RoHS compliance ensuring adherence to environmental regulations.

The device features a memory size of 64 kB organized as 8K words of 8 bits each. Supports Serial Peripheral Interface (SPI) with maximum clock frequency of 20 MHz. Operates within a voltage range of 1.8 V to 5.5 V ensuring compatibility with varied systems.

Includes write protection with hardware and software mechanisms for secure data handling. Data retention time of 100 years and endurance of 1,000,000 write cycles ensure high reliability. Compact 8-pin SOP surface mount package with a height of 1.5 mm suitable for space-constrained designs.

Temperature range from -40°C to +85°C supports robust industrial environments. Self-timed write cycle of maximum 5 ms enables efficient write operations. Complies with RoHS standards assuring environmental safety. Explore the full range of Microchip semiconductor memory products and related electronics components at EnvMart for industrial, commercial, and laboratory applications.