Preliminary

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. 1.2

http://www.ramtron.com

Mar. 2011

Page 1 of 11

FM1608B

64Kb Bytewide 5V F-RAM Memory

Features

64Kbit Ferroelectric Nonvolatile RAM

•

Organized as 8,192 x 8 bits

•

High Endurance 1 Trillion (10

•

°C)

•

NoDelay™ Writes

•

Advanced High-Reliability Ferroelectric Process

Superior to BBSRAM Modules

•

No Battery Concerns

•

Monolithic Reliability

•

True Surface Mount Solution, No Rework Steps

•

Superior for Moisture, Shock, and Vibration

•

Resistant to Negative Voltage Undershoots

SRAM & EEPROM Compatible

•

JEDEC 8Kx8 SRAM & EEPROM pinout

•

70 ns Access Time

•

130 ns Cycle Time

Low Power Operation

•

15 mA Active Current

•

25

µA (typ.) Standby Current

Industry Standard Configuration

•

Industrial Temperature -40

°C to +85°C

•

28-pin “Green”/RoHS SOIC Package

Description

The FM1608B is a 64-kilobit nonvolatile memory

employing an advanced ferroelectric process. A

ferroelectric random access memory or F-RAM is

nonvolatile but operates in other respects as a RAM.

It provides data retention for 38 years while

eliminating

the

reliability

concerns,

functional

disadvantages and system design complexities of

battery-backed SRAM (BBSRAM). Fast write timing

and high write endurance make F-RAM superior to

other types of nonvolatile memory.

In-system operation of the FM1608B is very similar

to other RAM devices. Minimum read- and write-

cycle times are equal. The F-RAM memory, however,

is nonvolatile due to its unique ferroelectric memory

process. Unlike BBSRAM, the FM1608B is a truly

monolithic nonvolatile memory. It provides the same

functional benefits of a fast write without the

disadvantages associated with modules and batteries

or hybrid memory solutions.

These capabilities make the FM1608B ideal for

nonvolatile memory applications requiring frequent

or rapid writes in a bytewide environment. The

availability of a true surface-mount package improves

the

manufacturability

of

new

designs.

Device

specifications are guaranteed over an industrial

temperature range of -40°C to +85°C.

Pin Configuration

Ordering Information

FM1608B-SG

28-pin “Green”/RoHS SOIC

NC

A12

A7

A6

A5

A4

A3

A2

A1

A0

DQ0

DQ1

DQ2

VSS

DQ3

DQ4

DQ5

DQ6

DQ7

CE

A10

OE

A11

A9

A8

NC

WE

VDD

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15