25LC640A-I/ST Datasheet



The Microchip Technology Inc. 25AA640A/25LC640A( 25LC640A-I/ST ) are 64k-bit Serial Electrically Erasable PROMs. 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. The 25XX640A is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead MSOP, 8-lead TSSOP and DFN. 25LC640A-I/ST Features • Max. Clock 10 MHz• Low-Power CMOS Technology- Max. Write Current: 5 mA at 5.5V, 10 MHz- Read Current: 5 mA at 5.5V, 10 MHz- Standby Current: 1 μA at 5.5V• 8192 x 8-bit Organization• 32 Byte Page• Self-Timed Erase and Write Cycles (5 ms max.)• Block Write Protection- Protect none, 1/4, 1/2 or all of array• Built-In Write Protection- Power-on/off data protection circuitry- Write enable latch- Write-protect pin• Sequential Read• High Reliability


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Manufacturer information


Diodes Incorporated is a leading global manufacturer and supplier of high-quality, application-specific, standard products within the broad discrete, logic and analog semiconductor markets. Diodes Incorporated primarily serves the computing, consumer, communications, industrial and automotive segments. Diodes’ diverse product portfolio includes parts for LCD/LED TVs and displays, desktop, notebook and tablet computing, smartphones and hand-held devices, set-top boxes, power supplies and USB protection as well as many other application areas.

Diodes Incorporated offers a wide array of products including diodes, rectifiers, transistors, MOSFETs, gate drivers, protection devices, function-specific arrays, amplifiers and comparators, Hall-effect sensors and temperature sensors, power management devices including LED drivers, AC-DC converters and controllers, DC-DC switching regulators, linear voltage regulators, current monitors, and voltage reference and shunt regulators, along with special function devices including USB power switches, load switch devices, voltage supervisors and motor controllers.

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