256KBit SPI SRAM 8-SOIC

           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. The 23X256 is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead TSSOP.

Features

Max. Clock 20 MHz

Low-Power CMOS Technology:      -  Read Current: 3 mA at 1 MHz      -  Standby Current: 4 μA Max. at 3.6V

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

Category    Integrated Circuits (ICs)

Family    Memory

Series    -

Format - Memory    RAM

Memory Type    SRAM

Memory Size    256K (32K x 8)

Speed    20MHz

Interface    SPI Serial

Voltage - Supply    2.7 V ~ 3.6 V

Operating Temperature    -40°C ~ 85°C

Package / Case    8-SOIC (0.154", 3.90mm Width)