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AT24CS256-10PC-2.7

Description
2-Wire Serial EEPROMs with Permanent Software Write Protect
Categorystorage    storage   
File Size148KB,12 Pages
ManufacturerAtmel (Microchip)
Download Datasheet Parametric View All

AT24CS256-10PC-2.7 Overview

2-Wire Serial EEPROMs with Permanent Software Write Protect

AT24CS256-10PC-2.7 Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerAtmel (Microchip)
Parts packaging codeDIP
package instructionDIP, DIP8,.3
Contacts8
Reach Compliance Codecompli
ECCN codeEAR99
Maximum clock frequency (fCLK)0.4 MHz
Data retention time - minimum40
Durability100000 Write/Erase Cycles
I2C control byte10100DDR
JESD-30 codeR-PDIP-T8
JESD-609 codee0
length9.59 mm
memory density262144 bi
Memory IC TypeEEPROM
memory width8
Number of functions1
Number of terminals8
word count32768 words
character code32000
Operating modeSYNCHRONOUS
Maximum operating temperature70 °C
Minimum operating temperature
organize32KX8
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 height5.33 mm
Serial bus typeI2C
Maximum standby current5e-7 A
Maximum slew rate0.003 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)2.7 V
Nominal supply voltage (Vsup)3.3 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
typeNOR TYPE
width7.62 mm
Maximum write cycle time (tWC)10 ms
write protectHARDWARE/SOFTWARE
Features
One-Time Programmable (OTP) Feature
Low-Voltage and Standard-Voltage Operation
– 5.0 (V
CC
= 4.5V to 5.5V)
– 2.7 (V
CC
= 2.7V to 5.5V)
– 1.8 (V
CC
= 1.8V to 3.6V)
Internally Organized 16,384 x 8 and 32,768 x 8
2-Wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bidirectional Data Transfer Protocol
1 MHz (5V), 400 kHz (2.7V) and 100 kHz (1.8V) Compatibility
Write Protect Pin for Hardware and Software Data Protection
64-Byte Page Write Mode (Partial Page Writes Allowed)
Self-Timed Write Cycle (5 ms typical)
High Reliability
– Endurance: 100,000 Write Cycles
– Data Retention: 40 Years
– ESD Protection: >4000V
Automotive Grade and Extended Temperature Devices Available
8-Pin JEDEC PDIP and 8-Pin JEDEC and EIAJ SOIC Packages
2-Wire Serial
EEPROMs
with Permanent
Software Write
Protect
128K (16,384 x 8)
256K (32,768 x 8)
Description
The AT24CS128/256 provides 131,072/262,144 bits of serial electrically erasable and
programmable read only memory (EEPROM) organized as 16,384/32,768 words of 8
bits each. The device’s cascadable feature allows up to 4 devices to share a common
2-wire bus. The device also features a one-time programmable 2048 bit array, which
once enabled, becomes read-only and cannot be overwritten. If not enabled, the OTP
section will function as part of the normal memory array. The device is optimized for
use in many industrial and commercial applications where low power and low voltage
operation are essential. The devices are available in space-saving 8-pin JEDEC PDIP
(AT24CS128/256), 8-pin EIAJ (AT24CS128/256), 8-pin JEDEC SOIC (AT24CS128)
packages. In addition, the entire family is available in 5.0V (4.5V to 5.5V), 2.7V (2.7V
to 5.5V) and 1.8V (1.8V to 3.6V) versions.
Pin Configurations
Pin Name
A0 to A2
SDA
SCL
WP
Function
Address Inputs
Serial Data
Serial Clock Input
Write Protect
A0
A1
A2
GND
8-Pin PDIP
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
AT24CS128
AT24CS256
with Permanent
Software Write
Protect
Advanced
Information
8-Pin SOIC
A0
A1
A2
GND
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
Rev. 1152A–09/98
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