Datasheet > FM25V20A-G

FM25V20A-G

更新时间： 2024-01-19 01:10:40

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		/
页数	文件大小	规格书
22页	1407K
描述
2-Mbit (256 K Ã 8) Serial (SPI) F-RAM

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FM25V20A-G 数据手册

FM25V20A

2-Mbit (256 K × 8) Serial (SPI) F-RAM

2-Mbit (256

K × 8) Serial (SPI) F-RAM

Features

Functional Overview

■ 2-Mbit ferroelectric random access memory (F-RAM) logically

organized as 256 K × 8

❐ High-endurance 100 trillion (10¹⁴) read/writes

❐ 151-year data retention (See the Data Retention and

Endurance table)

❐ NoDelay™ writes

❐ Advanced high-reliability ferroelectric process

The FM25V20A is a 2-Mbit nonvolatile memory employing an

advanced ferroelectric process. A ferroelectric random access

memory or F-RAM is nonvolatile and performs reads and writes

similar to a RAM. It provides reliable data retention for 151 years

while eliminating the complexities, overhead, and system-level

reliability problems caused by serial flash, EEPROM, and other

nonvolatile memories.

Unlike serial flash and EEPROM, the FM25V20A performs write

operations at bus speed. No write delays are incurred. Data is

written to the memory array immediately after each byte is

successfully transferred to the device. The next bus cycle can

commence without the need for data polling. In addition, the

product offers substantial write endurance compared with other

nonvolatile memories. The FM25V20A is capable of supporting

10¹⁴read/write cycles, or 100 million times more write cycles

than EEPROM.

■ Very fast serial peripheral interface (SPI)

❐ Up to 40-MHz frequency

❐ Direct hardware replacement for serial flash and EEPROM

❐ Supports SPI mode 0 (0, 0) and mode 3 (1, 1)

■ Sophisticated write protection scheme

❐ Hardware protection using the Write Protect (WP) pin

❐ Software protection using Write Disable instruction

❐ Software block protection for 1/4, 1/2, or entire array

These capabilities make the FM25V20A 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 serial flash or EEPROM can cause data loss.

■ Device ID

❐ Manufacturer ID and Product ID

■ Low power consumption

❐ 300 A active current at 1 MHz

❐ 100 A (typ) standby current

❐ 3 A sleep mode current

The FM25V20A provides substantial benefits to users of serial

EEPROM or flash as a hardware drop-in replacement. The

FM25V20A uses the high-speed SPI bus, which enhances the

high-speed write capability of F-RAM technology. The device

incorporates a read-only Device ID that allows the host to

determine the manufacturer, product density, and product

revision. The device specifications are guaranteed over an

industrial temperature range of –40 C to +85 C.

■ Low-voltage operation: V_DD= 2.0 V to 3.6 V

■ Industrial temperature: –40 C to +85 C

■ Packages

❐ 8-pin small outline integrated circuit (SOIC) package

❐ 8-pin dual flat no leads (DFN) package

For a complete list of related documentation, click here.

■ Restriction of hazardous substances (RoHS) compliant

Logic Block Diagram

Instruction Decoder

HOLD

SCK

Clock Generator

Control Logic

Write Protect

256 K x 8

F-RAM Array

Instruction Register

Address Register

Counter

Data I/O Register

Nonvolatile Status

Cypress Semiconductor Corporation

Document Number: 001-90261 Rev. *G

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised June 19, 2017

12 3 4 5 6 7...22

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FM25V20A-G 替代型号

型号	品牌	替代类型	描述	数据表
FM25V20A-GTR	CYPRESS	完全替代	2-Mbit (256 K Ã 8) Serial (SPI) F-RAM
FM25V20-G	CYPRESS	完全替代	2Mb Serial 3V F-RAM Memory
FM25H20-G	CYPRESS	类似代替	2Mb Serial 3V F-RAM Memory

与FM25V20A-G相关器件

型号	品牌	获取价格	描述	数据表
FM25V20A-GTR	CYPRESS	获取价格	2-Mbit (256 K Ã 8) Serial (SPI) F-RAM
FM25V20A-GTR	INFINEON	获取价格	2Mb 3.3V Industrial 40MHz SPI F-RAM in 8-pin SOIC
FM25V20A-PG	INFINEON	获取价格	2Mb 3.3V Industrial 25MHz SPI F-RAM in 8-pin DIP
FM25V20-DG	RAMTRON	获取价格	2Mb Serial 3V F-RAM Memory
FM25V20-DG	CYPRESS	获取价格	2Mb Serial 3V F-RAM Memory
FM25V20-DGTR	CYPRESS	获取价格	2Mb Serial 3V F-RAM Memory
FM25V20-DGTR	RAMTRON	获取价格	2Mb Serial 3V F-RAM Memory
FM25V20-G	RAMTRON	获取价格	2Mb Serial 3V F-RAM Memory
FM25V20-G	CYPRESS	获取价格	2Mb Serial 3V F-RAM Memory
FM25V20-GTR	CYPRESS	获取价格	2Mb Serial 3V F-RAM Memory

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