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

http://www.ramtron.com

Rev. 1.0

Aug. 2007

Page 1 of 8

FM1112

Nonvolatile 3V Quad State Saver

Features

Nonvolatile State Saver

•

Logic States Retained in Absence of Power

•

Outputs Automatically Restored at Power-up

•

Unlimited Number of State Changes

•

•

Max Frequency 1 MHz

Low Power Operation

•

Supply voltage of 2.7V to 3.6V

•

10

µA Standby Current

Industry Standard Configuration

•

Industrial Temperature -40

° C to +85° C

•

16-pin “Green”/RoHS QFN Package

Overview

The FM1112 is an innovative FRAM-based device

that stores inputs like conventional logic and retains

the stored state in the absence of power. This product

solves three basic problems in an elegant fashion.

First, it provides continuous access to nonvolatile

system settings without performing a memory read

operation or using dedicated processor I/O pins.

Second, it allows the storage of signals that may

change frequently and possibly without notice. Third,

it allows the nonvolatile storage of a system setting

without the system overhead and extra pins of a serial

memory.

Functionally, the inputs are stored and passed to the

output on the rising edge of the clock CLK. This

unique product serves a variety of applications. Here

are a few applications:

! Control relays or valves with automatic setting

on power-up without processor intervention

! Interface to soft/momentary front-panel switch

and indicator lamp. Capture switch settings and

drive LEDs without processor intervention

! Replaces jumpers & control signal routing

! Initialize state of I/O card signals

! Eliminate the overhead of serial memory for

systems needing only a bit of data

Pin Configuration

Pin Names

Function

Data In

Data Out

EN

Enable

CLK

Clock

VDD

Supply Voltage

VSS

Ground

Ordering Information

FM1112-QG

Quad State Saver,

16-pin “Green”/RoHS QFN

Top View

VDD

D0

Q0

D1

Q2

D2

D3

VSS

1

2

3

4

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