25LC640T Datasheet PDF – 64K, SPI BUS Serial EEPROM

Part Number: 25LC640T

Function: 64K bit 2.5V SPI Serial EEPROM

Package: SOIC 8 Pin Type

Manufacturer: Microchip Technology

Image and Pinouts:

25LC640T datasheet



The Microchip Technology Inc. 25AA640, 25LC640T, 25LC640(25XX640*) is a 64 Kbit Serial Electrically Erasable PROM [EEPROM]. The memory is 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.

Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts.


• Low-Power CMOS Technology
(1) Write current: 3 mA, typical
(2) Read current: 500 μA, typical
(2) Standby current: 500 nA, typical

• 8192 x 8 Bit Organization

• 32 Byte Page

• Write Cycle Time: 5 ms max.

• Self-Timed Erase and Write Cycles

Other data sheets are available within the file:

25AA640, 25AA640-I/SN, 25AA640T-I/SN, 25AA640X-I/ST, 25LC640-I/SN, 25LC640X-I/ST


25LC640T Datasheet PDF Download

25LC640T pdf