Download Datasheets 25C640 Device 
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Home - Memory Products - SPI (Serial EEPROMS) Devices - 25C640 Device, download datasheet

Download Datasheets 25C640 Device

The 25C640 is a 64K-bit Serial Electrically Erasable PROM with memory accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a chip select (CS) input. The 25C640 is capable of operation across a wide voltage range (2.5V to 5.5V) and extended temperature ranges (-40C to + 125C). The 25C640 is available in 8-pin PDIP, SOIC and TSSOP packages.

Datasheet and Other Documentation

Detailed Content

Lit. Number



25AA640/C640/LC640 Datasheet


Download 25AA640/C640/LC640 Datasheet


In Production

Specification Chart

Operat. Voltage

E/W Cycles

Density (Organ.)

Write Speed

Clock Speed

4.5V to 5.5V


64K bits (x8)

5 ms

3 MHz

Additional Features

Supports SPI Modes 0, 3.

Package Options

8 SOIC 150mil(SN), 8 PDIP(P), 8 TSSOP(ST), 2008-2015 - download datasheets