EEWORLDEEWORLDEEWORLD

Part Number

Search

NM25C040MT8

Description
4K-Bit Serial CMOS EEPROM (Serial Peripheral Interface (SPI) Synchronous Bus)
Categorystorage    storage   
File Size78KB,10 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
Download Datasheet Parametric View All

NM25C040MT8 Overview

4K-Bit Serial CMOS EEPROM (Serial Peripheral Interface (SPI) Synchronous Bus)

NM25C040MT8 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerFairchild
Parts packaging codeSOIC
package instructionTSSOP, TSSOP8,.25
Contacts8
Reach Compliance Codeunknow
ECCN codeEAR99
Other featuresDATA RETENTION > 40 YEARS
Maximum clock frequency (fCLK)2.1 MHz
Data retention time - minimum40
Durability1000000 Write/Erase Cycles
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length4.4 mm
memory density4096 bi
Memory IC TypeEEPROM
memory width8
Number of functions1
Number of terminals8
word count512 words
character code512
Operating modeSYNCHRONOUS
Maximum operating temperature70 °C
Minimum operating temperature
organize512X8
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Parallel/SerialSERIAL
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply5 V
Certification statusNot Qualified
Maximum seat height1.2 mm
Serial bus typeSPI
Maximum standby current0.00005 A
Maximum slew rate0.003 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)4.5 V
Nominal supply voltage (Vsup)5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3 mm
Maximum write cycle time (tWC)10 ms
write protectHARDWARE/SOFTWARE
NM25C040 4K-Bit Serial CMOS EEPROM
(Serial Periphrial Interface (SPI) Synchronous Bus)
March 1999
NM25C040
4K-Bit Serial CMOS EEPROM
(Serial Peripheral Interface (SPI) Synchronous Bus)
General Description
The NM25C040 is a 4096-bit CMOS EEPROM with an SPI
compatible serial interface. The NM25C040 is designed for data
storage in applications requiring both non-volatile memory and in-
system data updates. This EEPROM is well suited for applications
using the 68HC11 series of microcontrollers that support the SPI
interface for high speed communication with peripheral devices
via a serial bus to reduce pin count. The NM25C040 is imple-
mented in Fairchild Semiconductor’s floating gate CMOS process
that provides superior endurance and data retention.
The serial data transmission of this device requires four signal
lines to control the device operation: Chip Select (CS), Clock
(SCK), Data In (SI), and Serial Data Out (SO). All programming
cycles are completely self-timed and do not require an erase
before WRITE.
BLOCK WRITE protection is provided by programming the STA-
TUS REGISTER with one of four levels of write protection.
Additionally, separate WRITE enable and WRITE disable instruc-
tions are provided for data protection.
Hardware data protection is provided by the WP pin to protect
against inadvertent programming. The HOLD pin allows the serial
communication to be suspended without resetting the serial
sequence.
Features
s
2.1 MHz clock rate @ 2.7V to 5.5V
s
4096 bits organized as 512 x 8
s
Multiple chips on the same 3-wire bus with separate chip
select lines
s
Self-timed programming cycle
s
Simultaneous programming of 1 to 4 bytes at a time
s
Status register can be polled during programming to monitor
READY/BUSY
s
Write Protect (WP) pin and write disable instruction for both
hardware and software write protection
s
Block write protect feature to protect against accidental
writes
s
Endurance: 1,000,000 data changes
s
Data retention greater than 40 years
s
Packages available: 8-pin DIP, 8-pin SO, or 8-pin TSSOP
Block Diagram
CS
HOLD
SCK
SI
Instruction
Register
Instruction
Decoder
Control Logic
and Clock
Generators
V
CC
V
SS
WP
Address
Counter/
Register
Program
Enable
V
PP
EEPROM Array
4096 Bits
(512 x 8)
High Voltage
Generator
and
Program
Timer
Decoder
1 of 512
Read/Write Amps
Data In/Out Register
8 Bits
Data Out
Buffer
SO
Non-Volatile
Status Register
DS012401-1
© 1999 Fairchild Semiconductor Corporation
NM25C040 Rev. D.1
1
www.fairchildsemi.com
Cross-compilation error Help to understand the progress of cross-compilation
Hello everyone, when I was cross-compiling in my home directory recently, the cross-compile problem kept appearing: "Cannot find" my environment variables, and I have also restarted the profile file. ...
yanghelovehuang Microchip MCU
Internationalization of telecommunications companies
The country now requires Chinese companies to go global, which means that the operation mode and operation strategy of enterprises are undergoing tremendous changes. In this process of change, you can...
ehk RF/Wirelessly
Change of career, for sale - voice recognition - accessories inventory, can be used for lighting modification
Originally a promising product, it encountered strong resistance in actual operation and promotion, mainly due to accent incompatibility and price. We do not plan to continue to open our own factory f...
lixin91985 Buy&Sell
The last 6 cities - Cypress PSoC 4 M0 seminar! It is said that you can get a PSoC4 development board for free!
[font=微软雅黑][size=3][b]Registration link: [url=https://bbs.eeworld.com.cn/huodong.php?id=1]>>Cypress PSoC4 M0 offline seminar[/url][/b] 6 cities left: Wuhan, Qingdao, Taipei, Hsinchu, Xi'an, Shenyang M...
EEWORLD社区 MCU
Program-controlled switching technology
Years of accumulation, program-controlled switching technology courseware, pdf format....
xiaotaiwen RF/Wirelessly
Intelligent electric vehicle based on MSP430
MSP- based430FThe 449 automatic tracking electric car is mainly composed of a car body, a drive motor, a tracking sensor, and an MSP430F449 single chip microcomputer and auxiliary circuit, etc., all p...
孤独剑 Microcontroller MCU

Technical ResourceMore

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1820  1342  2276  746  2850  37  28  46  16  58 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号