Datasheet > FM25640_05

FM25640_05

更新时间： 2024-02-27 03:12:39

品牌	Logo	应用领域
铁电 - RAMTRON		存储
页数	文件大小	规格书
13页	187K
描述
64Kb FRAM Serial Memory

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中文翻译

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数据手册

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FM25640_05 数据手册

FM25640

64Kb FRAM Serial Memory

Features

Sophisticated Write Protection Scheme

64K bit Ferroelectric Nonvolatile RAM

•

Hardware Protection

Software Protection

•

Organized as 8,192 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

•

Up to 5 MHz maximum bus frequency

Direct hardware replacement for EEPROM

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

8-pin SOIC

“Green” 8-pin SOIC

Description

Pin Configuration

The FM25640 is a 64-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 FM25640 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. In addition, the product offers

substantial write endurance compared with other

nonvolatile memories. The FM25640 is capable of

supporting up to 10¹²read/write cycles -- far more

than most systems will require from a serial memory.

Pin Names

/CS

Function

Chip Select

Hold

/HOLD

/WP

Write Protect

Serial Clock

Serial Data Input

Serial Data Output

SCK

VDD

VSS

These capabilities make the FM25640 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.

Ground

Ordering Information

FM25640-S

FM25640-G

8-pin SOIC

“Green” 8-pin SOIC

The FM25640 provides substantial benefits to users

of serial EEPROM, in

hardware drop-in

replacement. The FM25640 uses the high-speed SPI

bus, which enhances the high-speed write capability

of FRAM technology. The 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

Mar. 2005

1 of 13

12 3 4 5 6 7...13

中文翻译

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与FM25640_05相关器件

型号	品牌	获取价格	描述	数据表
FM25640_07	RAMTRON	获取价格	64Kb FRAM Serial Memory
FM25640B	RAMTRON	获取价格	64Kb Serial 5V F-RAM Memory
FM25640B_13	CYPRESS	获取价格	64Kb Serial 5V F-RAM Memory
FM25640B-G	RAMTRON	获取价格	64Kb Serial 5V F-RAM Memory
FM25640B-G	CYPRESS	获取价格	64Kb Serial 5V F-RAM Memory
FM25640B-G	INFINEON	获取价格	铁电存储器 (F-RAM)
FM25640B-GA	CYPRESS	获取价格	Memory Circuit, 8KX8, CMOS, PDSO8, GREEN, MS-012AA, SOIC-8
FM25640B-GATR	CYPRESS	获取价格	Memory Circuit, 8KX8, CMOS, PDSO8, GREEN, MS-012AA, SOIC-8
FM25640B-GTR	RAMTRON	获取价格	64Kb Serial 5V F-RAM Memory
FM25640B-GTR	CYPRESS	获取价格	64Kb Serial 5V F-RAM Memory

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