Datasheet > FM574

FM574

更新时间： 2024-11-05 22:40:55

品牌	Logo	应用领域
其他 - ETC		锁存器
页数	文件大小	规格书
10页	87K
描述
Nonvolatile Octal Latch/Register

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中文翻译

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数据手册

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FM574 数据手册

Preliminary

FM573/574

Nonvolatile Octal Latch/Register

Automatic Nonvolatile Operation

Features

Latched state is stored automatically

State is automatically restored on power-up

Power supply monitor prevents low-VDD writes

8-bit Nonvolatile Latch

Logic state is preserved in the absence of power

Over 10 Billion (10¹⁰) nonvolatile state changes

Advanced high-reliability ferroelectric process

Low Power Operation

Supply voltage of 2.7V to 5.5V

125 mA standby current

Operates like conventional CMOS logic

Transparent (573) or D-Flip-flop (574) operation

FM573 transparent for C high, latched for C low

FM574 data is clocked on the rising edge of C

33/80 ns data propagation delay (5V/3V)

Industry Standard Configuration

Industrial temperature -40° C to +85° C

20-pin SOP or DIP

30 MHz/12 MHz Maximum frequency (5V/3V)

Description

Pin Configuration

The FM573 and FM574 are innovative circuits that

store inputs like conventional logic families, and then

retain the stored state in the absence of power. These

products solve three basic problems in an elegant

fashion. First, they provide continuous access to

nonvolatile system settings without performing a

memory read operation or using dedicated processor

I/O pins. Second, they allow the storage of signals or

data that may change frequently and possibly without

notice. Third, they allow the nonvolatile storage of a

few bits of data or system settings without the system

overhead and extra pins of a serial memory. The

FM573 is a transparent latch. The inputs are passed

to the outputs when the clock is high; the state is

latched when the clock goes low. The FM574 is a D-

type register. Inputs are stored and passed to the

outputs on the rising edge of the clock. The

nonvolatile latch is a unique product that serves a

variety of applications. A few ideas as follows:

VDD

VSS

Pin Names

Function

Data in

Data Out

Clock/Latch Enable

Output enable

Ground

D0-D7

Q0-Q7

/OE

VSS

VDD

ü Controls relays and valves with automatic setting

on power-up without processor intervention.

ü Interface to soft/momentary front-panel switches

and indicator lamps. Capture switch settings and

light LED’s without processor intervention.

ü Replaces jumpers & control signal routing

ü Initialize state of I/O card signals.

ü Save system errors or status codes when power

fails with a fast, no overhead write and automatic

restore on power up.

Supply Voltage

Ordering Information

FM573-P

FM573-S

FM574-P

FM574-S

Transparent latch, 20-pin plastic DIP

Transparent latch, 20-pin SOP

ü Eliminate the overhead of serial memory for

systems needing only a few bits of data.

Other package types may be available. Contact

the factory for more information.

The FM573 and FM574 are provided in a 20-pin DIP

or SOP. They are rated from –40C to +85C.

This data sheet contains specifications for a product under development.

Characterization is not complete; specifications may change without notice.

Ramtron International Corporation

1850 Ramtron Drive, Colorado Springs, CO 80921

(800) 545-FRAM, (719) 481-7000, Fax (719) 481-7058

27 March 2001

www.ramtron.com

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与FM574相关器件

型号	品牌	获取价格	描述	数据表
FM574-P	ETC	获取价格	Nonvolatile Octal Latch/Register
FM574-S	ETC	获取价格	Nonvolatile Octal Latch/Register
FM5-8	ETC	获取价格	Optoelectronic
FM580	FORMOSA	获取价格	Chip Schottky Barrier Diodes - Silicon epitaxial planer type
FM580	RECTRON	获取价格	SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER VOLTAGE RANGE 20 to 200 Volts CURRENT 5.0 Ampere
FM580B	RECTRON	获取价格	Reverse Voltage Vr : 80 V;Forward Current Io : 5.0 A;Max Surge Current : 200 A;Forward Vol
FM580-B	FORMOSA	获取价格	Chip Schottky Barrier Diodes - Silicon epitaxial planer type
FM580B-HF-T	RECTRON	获取价格	暂无描述
FM580B-T	RECTRON	获取价格	Rectifier Diode,
FM580BV-T	RECTRON	获取价格	暂无描述

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