Microchip 64 kB EEPROM 80 ns 8-Pin SOP Serial-SPI Memory AT25640B-XHL-B

Microchip AT25640B-XHL-B is a high-reliability serial electrically erasable programmable read-only memory (EEPROM) with 64 kB capacity, organized as 8,192 words of 8 bits each. It features a Serial Peripheral Interface (SPI) compatible with SPI modes 0 and 3, operating at a maximum clock frequency of 20 MHz. The device functions within a voltage range of 1.8V to 5.5V and is optimized for low power consumption with a supply current of 10 mA.

Its robust industrial temperature range from -40°C to 85°C and 100-year data retention make it ideal for demanding commercial and industrial applications that require long-term reliable data storage. Packaging in an 8-pin Small Outline Package (SOP) ensures minimal board space usage with a package height of 1.5mm, suitable for surface mounting.

The EEPROM supports 32-byte page programming and provides multiple levels of write protection, such as block protection and a write protect pin, ensuring secure data handling. Self-timed write cycles last a maximum of 5 ms. The device offers high endurance with 1,000,000 write cycles, making it dependable for frequent write applications.

This Microchip memory chip is extensively used in embedded systems, industrial control, instrumentation, and other applications where low voltage operation and high durability are critical. Compliance with RoHS standards confirms its environmental safety. The AT25640B-XHL-B is part of the AT2564 series, designed to provide dependable memory solutions for a wide range of electronic devices.

The EEPROM offers 64kB memory size organized as 8K x 8 bits. Supports SPI modes 0 (0,0) and 3 (1,1) for flexible communication. Operates on a voltage range from 1.8V to 5.5V. Maximum clock frequency of 20 MHz allows fast data access.

Designed for industrial and commercial use with an operating temperature range from -40°C to 85°C. High data retention of up to 100 years ensures long-term reliability. The chip is equipped with block write protection and write protect pin for data security.

Compact 8-lead SOP surface mount package with a height of 1.5mm optimizes board space. Supply current is low at 10 mA with maximum random access time of 80 ns. Device endurance rated for 1,000,000 write cycles for durability.

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