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: 001-84472 Rev. *A

Revised March 07, 2013

FM25C160B

16Kb Serial 5V F-RAM Memory

Features

16K bit Ferroelectric Nonvolatile RAM

Organized as 2,048 x 8 bits

High Endurance 1 Trillion (10

38 year Data Retention

NoDelay™ Writes

Advanced High-Reliability Ferroelectric Process

Very Fast Serial Peripheral Interface - SPI

Up to 20 MHz maximum Bus Frequency

Direct hardware replacement for EEPROM

SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1)

Sophisticated Write Protection Scheme

Hardware Protection

Software Protection

Low Power Consumption

250 A Active Current (1 MHz)

4 A (typ.) Standby Current

Industry Standard Configuration

Industrial Temperature -40 C to +85 C

8-pin “Green”/RoHS SOIC (-G)

Description

The FM25C160B is a 16-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 reliable data retention for 38 years while

eliminating the complexities, overhead, and system

level reliability problems caused by EEPROM and

other nonvolatile memories.

The FM25C160B performs write operations at bus

speed. No write delays are incurred. Data is written to

the memory array immediately after it has been

successfully transferred to the device. The next bus

cycle may commence immediately without the need

for data polling. The FM25C160B is capable of

supporting up to 10

times more write cycles than EEPROM.

These capabilities make the FM25C160B 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 FM25C160B provides substantial benefits to

users of serial EEPROM, in a hardware drop-in

replacement. The FM25C160B uses the high-speed

SPI bus, which enhances the high-speed write

capability of F-RAM technology. The specifications

are guaranteed over an industrial temperature range

of -40°C to +85°C.

Pin Configuration

Pin Name

Function

/CS

Chip Select

/WP

Write Protect

/HOLD

Hold

SCK

Serial Clock

SI

Serial Data Input

SO

Serial Data Output

VDD

5V

VSS

Ground

Ordering Information

FM25C160B-G

“Green” 8-pin SOIC

FM25C160B-GTR

“Green” 8-pin SOIC,

Tape & Reel

CS

SO

WP

VSS

VDD

HOLD

SCK

SI

1

2

3

4

8

7

6

5