23A256 Datasheet - Microchip

23A256 256-Kbit SPI Bus Low-Power Serial SRAM

The Microchip Technology Inc. 23X256 is a 256-Kbit Serial SRAM device. 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 .

23A256 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 (

23A256-Microchip.pdf