Product Summary

The AT24C256N is a 2-Wire Serial EEPROM. It 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 AT24C256N cascadable feature allows up to 4 devices to share a common 2-wire bus. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential. The AT24C256N is available in space-saving 8-pin JEDEC PDIP. In addition, the entire family is available in 5.0V (4.5V to 5.5V) version.

Parametrics

AT24C256N absolute maximum ratings: (1)Storage Temperature: -65℃ to +150℃; (2)Voltage on Any Pin with Respect to Ground: -1.0V to +7.0V; (3)Maximum Operating Voltage: 6.25V; (4)DC Output Current: 5.0 mA; (5)Operating Temperature: -55℃ to +125℃.

Features

AT24C256N features: (1)Internally Organized 16,384 x 8 and 32,768 x 8; (2)2-Wire Serial Interface; (3)Schmitt Trigger, Filtered Inputs for Noise Suppression; (4)Bidirectional Data Transfer Protocol; (5)1 MHz (5V), 400 kHz (2.7V) and 100 kHz (1.8V) Compatibility; (6)Write Protect Pin for Hardware and Software Data Protection; (7)64-Byte Page Write Mode (Partial Page Writes Allowed); (8)Self-Timed Write Cycle (5 ms typical); (9)High Reliability; (10)Automotive Grade and Extended Temperature Devices Available; (11)8-Pin JEDEC PDIP, 8-Pin JEDEC and EIAJ SOIC, 14-Pin TSSOP, and 8-Pin Leadless Array Packages.

Diagrams

AT24C256N block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
AT24C256N
AT24C256N

Other


Data Sheet

Negotiable 
AT24C256N-10SC
AT24C256N-10SC

Atmel

IC SEEPROM 256K 5.0V SO-8

Data Sheet

Negotiable 
AT24C256N-10SC-2.7
AT24C256N-10SC-2.7


IC EEPROM 256KBIT 1MHZ 8SOIC

Data Sheet

Negotiable 
AT24C256N-10SI
AT24C256N-10SI


IC EEPROM 256KBIT 1MHZ 8SOIC

Data Sheet

Negotiable 
AT24C256N-10SI-1.8
AT24C256N-10SI-1.8


IC EEPROM 256KBIT 400KHZ 8SOIC

Data Sheet

Negotiable 
AT24C256N-10SC-1.8
AT24C256N-10SC-1.8

Atmel

IC SEEPROM 256K 1.8V SO-8

Data Sheet

Negotiable 
AT24C256N-10SU
AT24C256N-10SU

Atmel

EEPROM 128/256k 2-Wire Bus

Data Sheet

Negotiable 
AT24C256N-10SU-2.7
AT24C256N-10SU-2.7

Atmel

EEPROM 128/256K 2-WIRE BUS

Data Sheet

Negotiable