23LC1024 datasheet(1/32 Pages) MICROCHIP

Part #	23LC1024

Description	1Mbit SPI Serial SRAM with SDI and SQI Interface

PDF	32 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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1 / 32 page

 2011 Microchip Technology Inc.

Preliminary

DS25142A-page 1

23A1024/23LC1024

Device Selection Table

Features:

• SPI-Compatible Bus Interface:

- 20 MHz Clock rate

- SPI/SDI/SQI mode

• Low-Power CMOS Technology:

- Read Current: 3 mA at 5.5V, 20 MHz

- Standby Current: 4

A at +85°C

• Unlimited Read and Write Cycles

• Zero Write Time

• 128K x 8-bit Organization:

- 32-byte page

• Byte, Page and Sequential mode for Reads and

Writes

• High Reliability

• Temperature Range Supported:

• Pb-Free and RoHS Compliant, Halogen Free

• 8 Lead SOIC, TSSOP and PDIP Packages

Pin Function Table

Description:

The Microchip Technology Inc. 23A1024/23LC1024

are 1 Mbit 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. Additionally, SDI

(Serial Dual Interface) and SQI (Serial Quad Interface)

is supported if your application needs faster data rates.

This device also supports unlimited reads and writes to

the memory array.

The 23A1024/23LC1024 is available in standard

packages including 8-lead SOIC, PDIP and advanced

8-lead TSSOP.

Package Types (not to scale)

Part

Number

VCC Range

Dual I/O

(SDI)

Quad I/O

(SQI)

Max Clock

Frequency

Packages

23A1024

1.7-2.2V

Yes

20 MHz

SN, ST, P

23LC1024

2.5-5.5V

Yes

20 MHz

SN, ST, P

- Industrial (I):

-40

Cto +85C

Name

Function

CS

Chip Select Input

SO/SIO1

Serial Output/SDI/SQI Pin

SIO2

SQI Pin

Vss

Ground

SI/SIO0

Serial Input/SDI/SQI Pin

SCK

Serial Clock

HOLD/SIO3

Hold/SQI Pin

Vcc

Power Supply

CS

SO/SIO1

SIO2

Vss

Vcc

HOLD/SIO3

SCK

SI/SIO0

1

2

3

4

8

7

6

5

SOIC/TSSOP/PDIP

1Mbit SPI Serial SRAM with SDI and SQI Interface

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