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Description:

The Microchip Technology Inc. 23X640 are 64 Kbit Serial SRAM devices. 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.

Features:

? Max. Clock 20 MHz

? Low-Power CMOS Technology:

- Read Current: 3 mA at 1 MHz

- Standby Current: 4 μA Max. at +85°C

? 8192 x 8-bit Organization

? 32-Byte Page

? HOLD pin

? Flexible Operating modes:

- Byte read and write

- Page mode (32 Byte Page)

- Sequential mode

? Sequential Read/Write

? High Reliability

? Temperature Ranges Supported:

- Industrial (I): -40°C to +85°C

- Automotive (E): -40°C to +125°C

? Pb-Free and RoHS Compliant, Halogen Free