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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. 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.

Features

? Maximum Clock 20 MHz

? Low-Power CMOS Technology:

- Read Current: 3 mA at 1 MHz

- Standby Current: 4 μA maximum at +85°C

? 32,768 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:

? Pb-Free and RoHS Compliant, Halogen Free

? Automotive AEC-Q100 Qualified

- Industrial (I):-40C to + 85C

- Extended (E):-40C to + 125C