© Semiconductor Components Industries, LLC, 2012

June, 2012 − Rev. 11

1

Publication Order Number:

N64S818HA/D

N64S818HA

64 kb Low Power Serial

SRAMs

8 k x 8 Bit Organization

Introduction

The ON Semiconductor serial SRAM family includes several

integrated memory devices including this 64 k serially accessed Static

Random Access Memory, internally organized as 8 k words by 8 bits.

The devices are designed and fabricated using ON Semiconductor’s

advanced CMOS technology to provide both high−speed performance

and low power. The devices operate with a single chip select (CS)

input and use a simple Serial Peripheral Interface (SPI) serial bus. A

single data in and data out line is used along with a clock to access data

within the devices. The N64S818HA devices include a HOLD pin that

allows communication to the device to be paused. While paused, input

transitions will be ignored. The devices can operate over a wide

temperature range of −40

°C to +85°C and can be available in several

standard package offerings.

Features

Single chip select (CS)

Serial input (SI) and serial output (SO)

Word read and write

Page mode (32 word page)

Burst mode (full array)

Compliant

http://onsemi.com

Device

Package

ORDERING INFORMATION

N64S818HAS21I

SOIC−8

(Pb−Free)

100 Units / Tube

N64S818HAT21I

TSSOP−8

(Pb−Free)

100 Units / Tube

N64S818HAS21IT

SOIC−8

(Pb−Free)

3000 / Tape &

Reel

N64S818HAT21IT

TSSOP−8

(Pb−Free)

3000 / Tape &

Reel

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

TSSOP−8

T SUFFIX

CASE 948AL

MARKING

DIAGRAMS

A124

XXXXYZZ

XXXX

= Date Code

Y

= Assembly Code

ZZ

= Lot Traceability

SOIC−8

S SUFFIX

CASE 751BD

A114

XXXXYZZ