FM25040A

更新时间： 2024-09-17 04:18:39

品牌	Logo	应用领域
铁电 - RAMTRON		存储
页数	文件大小	规格书
13页	141K
描述
4Kb FRAM Serial Memory

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FM25040A 数据手册

FM25040A

4Kb FRAM Serial Memory

Features

Sophisticated Write Protection Scheme

4K bit Ferroelectric Nonvolatile RAM

•

Hardware Protection

Software Protection

•

Organized as 512 x 8 bits

High Endurance 1 Trillion (10¹²) Read/Writes

45 year Data Retention

Low Power Consumption

10 µA Standby Current

NoDelay™ Writes

Advanced High-Reliability Ferroelectric Process

•

Industry Standard Configuration

Very Fast Serial Peripheral Interface - SPI

•

Industrial Temperature -40° C to +85° C

8-pin SOIC (-S)

“Green” 8-pin SOIC (-G)

•

Up to 20 MHz maximum Bus Frequency

Direct hardware replacement for EEPROM

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

Description

Pin Configuration

The FM25040A is a 4-kilobit nonvolatile memory

employing an advanced ferroelectric process. A

ferroelectric random access memory or FRAM is

nonvolatile but operates in other respects as a RAM.

It provides reliable data retention for 45 years while

eliminating the complexities, overhead, and system

level reliability problems caused by EEPROM and

other nonvolatile memories.

VDD

HOLD

SCK

VSS

Unlike serial EEPROMs, the FM25040A performs

write operations at bus speed. No write delays are

incurred. Data is written to the memory array in the

cycle after it has been successfully transferred to the

device. The next bus cycle may commence

immediately without the need for data polling. In

addition the product offers substantial write

endurance compared with other nonvolatile

memories. The FM25040A is capable of supporting

up to 10¹²read/write cycles -- far more than most

systems will require from a serial memory.

Pin Names

/CS

/WP

/HOLD

SCK

VDD

VSS

Function

Chip Select

Write Protect

Hold

Serial Clock

Serial Data Input

Serial Data Output

Supply Voltage 5V

Ground

These capabilities make the FM25040A 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.

Ordering Information

FM25040A-S

FM25040A-G

8-pin SOIC

“Green” 8-pin SOIC

The FM25040A provides substantial benefits to users

of serial EEPROM, in

hardware drop-in

replacement. The FM25040A uses the high-speed

SPI bus which enhances the high-speed write

capability

FRAM

technology.

Device

specifications are guaranteed over an industrial

temperature range of -40°C to +85°C.

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.

Ramtron International Corporation

1850 Ramtron Drive, Colorado Springs, CO 80921

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

www.ramtron.com

Rev. 3.0

May 2006

Page 1 of 13

12 3 4 5 6 7...13

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与FM25040A相关器件

型号	品牌	获取价格	描述	数据表
FM25040A-G	RAMTRON	获取价格	4Kb FRAM Serial Memory
FM25040A-GA	RAMTRON	获取价格	Memory Circuit, 512X8, CMOS, PDSO8, GREEN, MS-012AA, SOIC-8
FM25040A-GTR	RAMTRON	获取价格	Memory Circuit, 512X8, CMOS, PDSO8, GREEN, MS-012AA, SOIC-8
FM25040A-S	RAMTRON	获取价格	4Kb FRAM Serial Memory
FM25040A-STR	RAMTRON	获取价格	Memory Circuit, 512X8, CMOS, PDSO8, MS-012AA, SOIC-8
FM25040B	RAMTRON	获取价格	4Kb Serial 5V F-RAM Memory
FM25040B_13	CYPRESS	获取价格	4Kb Serial 5V F-RAM Memory
FM25040B-G	CYPRESS	获取价格	4Kb Serial 5V F-RAM Memory
FM25040B-G	RAMTRON	获取价格	4Kb Serial 5V F-RAM Memory
FM25040B-G	INFINEON	获取价格	铁电存储器 (F-RAM)

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