Preliminary

AEC Q100 Grade 1 Compliant

This is a product that has fixed target specifications but are subject

Ramtron International Corporation

to change pending characterization results.

1850 Ramtron Drive, Colorado Springs, CO 80921

(800) 545-FRAM, (719) 481-7000

Rev. 1.1

http://www.ramtron.com

June 2011

Page 1 of 12

64Kb Serial 3V F-RAM Memory

Features

64K bit Ferroelectric Nonvolatile RAM



Organized as 8192 x 8 bits



High Endurance 10 Trillion (10



NoDelay™ Writes



Advanced High-Reliability Ferroelectric Process

Fast Two-wire Serial Interface



Up to 1 MHz maximum bus frequency



Direct hardware replacement for EEPROM



Supports legacy timing for 100 kHz & 400 kHz

Low Power Consumption



Low Voltage Operation 3.0-3.6V



6 A Standby Current (+85C)

Industry Standard Configuration



Automotive Temperature -40C to +125C

o

Qualified to AEC Q100 Specification



8-pin “Green”/RoHS SOIC Package

Description

The FM24CL64B is a 64Kbit nonvolatile memory

employing an advanced ferroelectric process. A

ferroelectric random access memory or F-RAM is

nonvolatile and performs reads and writes like a

RAM. It provides reliable data retention for years

while eliminating the complexities, overhead, and

system

level

reliability

problems

caused

by

EEPROM and other nonvolatile memories.

The FM24CL64B performs write operations at bus

speed. No write delays are incurred. The next bus

cycle may commence immediately without the need

for data polling. In addition, the product offers write

endurance

orders

of

magnitude

higher

than

EEPROM. Also, F-RAM exhibits much lower power

during writes than EEPROM since write operations

do not require an internally elevated power supply

voltage for write circuits.

These capabilities make the FM24CL64B ideal for

nonvolatile memory applications requiring frequent

or rapid writes. Examples range from data collection

where the number of write cycles may be critical, to

demanding industrial controls where the long write

time

of EEPROM

can cause

data

loss.

The

combination of features allows more frequent data

writing with less overhead for the system.

The FM24CL64B provides substantial benefits to

users of serial EEPROM, yet these benefits are

available in a hardware drop-in replacement. The

device is available in industry standard 8-pin SOIC

package using a familiar two-wire (I

device is guaranteed over the automotive temperature

range of -40°C to +125°C.

Pin Configuration

A0

A1

A2

VSS

VDD

WP

SCL

SDA

1

2

3

4

8

7

6

5

Pin Name

Function

A0-A2

Device Select Address

SDA

Serial Data/address

SCL

Serial Clock

WP

Write Protect

VDD

Supply Voltage

VSS

Ground

Ordering Information

“Green”/RoHS 8-pin SOIC,

Automotive Grade 1

FM24CL64B-GATR

“Green”/RoHS 8-pin SOIC,

Automotive Grade 1,

Tape & Reel