23K256-ESLASHST datasheet(1/27 Pages) MICROCHIP

Part #	23K256-E/ST

Description	256-Kbit SPI Bus Low-Power Serial SRAM

PDF	27 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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 2008-2022 Microchip Technology Inc. and its subsidiaries

DS20002100G-page 1

23A256/23K256

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

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.

Packages

• 8-lead PDIP

• 8-lead SOIC

• 8-lead TSSOP

Package Types (not to scale)

Device Selection Table

Part Number

VCC Range

Page Size

Temperature Ranges

Packages

23K256

2.7V-3.6V

32 Byte

I, E

P, SN, ST

23A256

1.5V-1.95V

32 Byte

I

P, SN, ST

- Industrial (I):

- Extended (E):

-40

C

-40

C

to

+85

C

+125

C

Pin Function Table

Name

Function

CS

Chip Select Input

SO

Serial Data Output

VSS

Ground

SI

Serial Data Input

SCK

Serial Clock Input

HOLD

Hold Input

VCC

Supply Voltage

Note:

23X256 is used in this document as a

generic

part

number

for

the

23A256/23K256 devices.

CS

SO

NC

VSS

1

2

3

4

8

7

6

5

VCC

HOLD

SCK

SI

PDIP/SOIC/TSSOP

256-Kbit SPI Bus Low-Power Serial SRAM

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23K256-E/ST Datasheet(PDF) 1 Page - Microchip Technology

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