FM25C040UE

更新时间： 2024-11-30 22:40:55

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
11页	107K
描述
4K-Bit SPI⑩ Interface Serial CMOS EEPROM

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中文翻译

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FM25C040UE 数据手册

February 2002

FM25C040U

4K-Bit SPI™ Interface

Serial CMOS EEPROM

General Description

Functions

The FM25C040U is a 4K (4,096) bit serial interface CMOS

EEPROM (Electrically Erasable Programmable Read-Only

Memory). This device fully conforms to the SPI 4-wire protocol

whichusesChipSelect(/CS), Clock(SCK), Data-in(SI)andData-

out (SO) pins to synchronously control data transfer between the

SPI microcontroller and the EEPROM. In addition, the serial

interface allows a minimal pin count, packaging designed to

simplify PC board layout requirements and offers the designer a

variety of low voltage and low power options.

I SPI MODE 0 interface

I 4,096 bits organized as 512 x 8

I Extended 2.7V to 5.5V operating voltage

I 2.1 MHz operation @ 4.5V - 5.5V

I Self-timed programming cycle

I "Programming complete" indicated by STATUS REGISTER

polling

I /WP pin and BLOCK WRITE protection

This SPI EEPROM family is designed to work with the 68HC11 or

any other SPI-compatible, high-speed microcontroller and offers

both hardware (/WP pin) and software ("block write") data protec-

tion. For example, entering a 2-bit code into the STATUS REGIS-

TER prevents programming in a selected block of memory and all

Features

I Sequential read of entire array

I 4 byte "Page write" mode to minimize total write time per

byte

programming can be inhibited by connecting the /WP pin to V_SS

;

allowing the user to protect the entire array or a selected section.

In addition, SPI devices feature a /HOLD pin, which allows a

temporary interruption of the datastream into the EEPROM.

I /WP pin and BLOCK WRITE protection to prevent inadvert-

ent programming as well as programming ENABLE and

DISABLE opcodes.

I /HOLD pin to suspend data transfer

Fairchild EEPROMs are designed and tested for applications

requiring high endurance, high reliability, and low power con-

sumption for a continuously reliable non-volatile solution for all

markets.

I Typical 1µA standby current (I_SB) for "L" devices and 0.1µA

standby current for "LZ" devices.

I Endurance: Up to 1,000,000 data changes

I Data retention greater than 40 years

Block Diagram

/CS

/HOLD

SCK

V_CC

V_SS

Instruction

Decoder

Control Logic

and Clock

/WP

Instruction

Generators

Program

Enable

Address

Counter/

High Voltage

Generator

and

Program

Timer

V_PP

Decoder

EEPROM Array

Read/Write Amps

Data In/Out Register

8 Bits

Data Out

Buffer

Non-Volatile

Status Register

SPI™ is a trademark of Motorola Corporation

FM25C040U Rev. B

www.fairchildsemi.com

12 3 4 5 6 7...11

中文翻译

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与FM25C040UE相关器件

型号	品牌	获取价格	描述	数据表
FM25C040UEM8	FAIRCHILD	获取价格	SERIAL EEPROM\|512X8\|CMOS\|SOP\|8PIN\|PLASTIC
FM25C040UEM8X	FAIRCHILD	获取价格	EEPROM, 512X8, Serial, CMOS, PDSO8, SO-8
FM25C040UEMT8	ETC	获取价格	SPI Serial EEPROM
FM25C040UEN	FAIRCHILD	获取价格	SERIAL EEPROM\|512X8\|CMOS\|DIP\|8PIN\|PLASTIC
FM25C040ULEM8	FAIRCHILD	获取价格	EEPROM, 512X8, Serial, CMOS, PDSO8, PLASTIC, SO-8
FM25C040ULEMT8	FAIRCHILD	获取价格	SERIAL EEPROM\|512X8\|CMOS\|TSSOP\|8PIN\|PLASTIC
FM25C040ULEN	ETC	获取价格	SPI Serial EEPROM
FM25C040ULM8	FAIRCHILD	获取价格	SERIAL EEPROM\|512X8\|CMOS\|SOP\|8PIN\|PLASTIC
FM25C040ULM8X	FAIRCHILD	获取价格	EEPROM, 512X8, Serial, CMOS, PDSO8, PLASTIC, SOIC-8
FM25C040ULMT8	FAIRCHILD	获取价格	EEPROM, 512X8, Serial, CMOS, PDSO8, PLASTIC, TSSOP-8

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