Description: The Microchip Technology Inc. 23X256 are 256 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. Features: • Max. Clock 20 MHz • Low-Power CMOS Technology: \- Read Current: 3 mA at 1 MHz \- Standby Current: 4 A Max. at +85°C • 32,768 x 8-bit Organization • 32-Byte Page • Sequential Read/Write • High Reliability • Temperature Ranges Supported: \- Industrial (I): -40°C to +85°C \- Automotive (E): -40°C to +125°C