This product conforms to specifications per the terms of the Ramtron standard warranty.

The product has completed Ramtron’s

internal qualification testing and has reached production status.

Cypress Semiconductor Corporation

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Document Number: 001-86204 Rev. *A

Revised March 07, 2013

FM28V020

256Kbit Bytewide F-RAM Memory

Features

256Kbit Ferroelectric Nonvolatile RAM

Organized as 32K x 8

10

NoDelay™ Writes

Page Mode Operation

Advanced High-Reliability Ferroelectric Process

Superior to Battery-backed SRAM 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 Replacement

JEDEC 32Kx8 SRAM pinout

70 ns Access Time, 140 ns Cycle Time

Low Power Operation

2.0V – 3.6V Power Supply

Standby Current 90 A (typ)

Active Current 5 mA (typ)

Industry Standard Configurations

Industrial Temperature -40 C to +85 C

28-pin “Green”/RoHS SOIC (-SG)

28-pin “Green”/RoHS TSOP (-T28G)

32-pin “Green”/RoHS TSOP (-TG)

General Description

The FM28V020 is a 32K x 8 nonvolatile memory that

reads and writes like a standard SRAM. A ferroelectric

random access memory or F-RAM is nonvolatile,

which means that data is retained after power is

removed. It provides data retention for over 10 years

while eliminating the reliability concerns, functional

disadvantages, and system design complexities of

battery-backed SRAM (BBSRAM). Fast write timing

and virtually unlimited write endurance make F-RAM

superior to other types of memory.

In-system operation of the FM28V020 is very similar

to other RAM devices and can be used as a drop-in

replacement for standard SRAM. Read and write

cycles may be triggered by /CE or simply by changing

the address. The F-RAM memory is nonvolatile due to

its

unique

ferroelectric

memory process.

These

features make the FM28V020 ideal for nonvolatile

memory applications requiring frequent or rapid writes

in the form of an SRAM.

The device is available in a 28-pin SOIC, 28-pin

TSOP-I, or 32-pin TSOP-I surface mount package.

Device

specifications

are

guaranteed

over

the

industrial temperature range -40°C to +85°C.

Ordering Information

FM28V020-SG

28-pin “Green”/RoHS SOIC

FM28V020-SGTR

28-pin “Green”/RoHS SOIC, Tape & Reel

FM28V020-T28G

28-pin “Green”/RoHS TSOP

FM28V020-T28GTR

28-pin “Green”/RoHS TSOP, Tape & Reel

FM28V020-TG

32-pin “Green”/RoHS TSOP

FM28V020-TGTR

32-pin “Green”/RoHS TSOP, Tape & Reel