EEWORLDEEWORLDEEWORLD

Part Number

Search

NM25C040LZN

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

NM25C040LZN Overview

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

NM25C040LZN Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerFairchild
Parts packaging codeDIP
package instructionDIP, DIP8,.3
Contacts8
Reach Compliance Codeunknow
ECCN codeEAR99
Other featuresDATA RETENTION > 40 YEARS
Data retention time - minimum40
Durability1000000 Write/Erase Cycles
JESD-30 codeR-PDIP-T8
JESD-609 codee0
length9.817 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 codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
Parallel/SerialSERIAL
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply3/5 V
Certification statusNot Qualified
Maximum seat height5.08 mm
Serial bus typeSPI
Maximum standby current0.000001 A
Maximum slew rate0.003 mA
Maximum supply voltage (Vsup)4.5 V
Minimum supply voltage (Vsup)2.7 V
surface mountNO
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
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
"One Hundred Thousand Whys" at the Opening Ceremony
[color=red][/color] [color=red] The modern Olympics is a feast wrapped in modern technology. How to make nanotechnology, wireless radio frequency identification technology, 3G mobile phone technology,...
26979746 Talking
I want to use a counter instead of soft delay, but after downloading it to the board, the function is not implemented. Please help me analyze it.
#include void Init_Value(); void Delay(unsigned char count); sbit Led = P1^0; //unsigned char i = 1; void main(void) { Init_Value(); while(1); } void Init_Value() { / / TMOD = 0x01; // TH0 = (65535 - ...
wuwei123 MCU
Verilog original code and implementation of DDS
[i=s] This post was last edited by paulhyde on 2014-9-15 03:38 [/i] DDS Verilog original code and implementation...
w123b456 Electronics Design Contest
A lifelong inspiration and a lifelong mentor!
I read a few very good articles in the evening, mainly about life, living, emotions, and dealing with people. I was deeply touched, so I uploaded them for everyone to share! The long road of life has ...
苦行 Talking
3 pieces each of tms320c6711gfn and tms320c31pql
Contact: 13439111303...
z_03 Buy&Sell
DM9000 can send correctly, but the received data packet is larger than 1518B!!!
dmfe_packet_receive: DM9000's RxLen is: ffff The length of the received data packet is 0xffff > 1518. What could be the reason?...
builds Embedded System

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2521  1629  1075  1685  91  51  33  22  34  2 
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