AT24C256C-SSHL-T Memory by Microchip Technology

256Kb I2C compatible 2-wire Serial EEPROM

Status: Active
Series: AT24C256C
RoHS: Compliant
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The Microchip AT24C256C is a 256Kb Serial EEPROM utilizing an I2C (2-wire) serial interface. The device is organized as one block of 32K x 8 and is optimized for use in consumer, industrial, and automotive applications where reliable and dependable nonvolatile memory storage is essential. The EEPROM is available in a variety of space-saving packaging options.

Prices starting from US$0.60

Distributor Starting From Stock
Logo for Future Electronics Future Electronics US$0.90
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Logo for Farnell Farnell US$0.92
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Logo for Newark Electronics Newark Electronics US$0.94
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Logo for element14 element14 US$0.94
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Logo for Microchip Technology Microchip Technology US$0.60
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Logo for Avnet America Avnet America US$0.80
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Logo for EBV Elektronik EBV Elektronik -
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32K x 8 (256 Kbit)
400 kHz and 1 MHz clock compatibility
Self-Timed Erase and Write Cycles (5 ms max.)
Read current 1 mA (Typ), 2 mA (Max)
Write current 2 mA (Typ), 3 mA (Max)
Standby current 6 uA (Max)
Hardware Write-Protect Pin
More than 1 million erase/write cycles
Data retention > 100 years
Grade 1 Temperature Range: -40°C to 125°C
Grade 2 Temperature Range: -40°C to 105°C
Grade 3 Temperature Range: -40°C to 85°C
Qualified for Automotive Applications
Factory Programming Available
Available in 8-lead SOIC, 8-lead TSSOP, 8-pad UDFN, and 8-ball VFBGA packages


Density (Organization) 256K bits
Operating Voltage Min. (V) 1.7
Oper Voltage Max (V) 5.5
Max. Clock Freq. 1 MHz
Page Size (bytes) 64
Write Protected False
Write Protect Scheme Whole Array
Endurance 1,000,000
Data Retention (Years) 0
Battery Backup False
Pins | Packaging 8 | SOIC
Temp Range -40C to +85C
Packing Media Tape and reel (4000)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.078
Shipping Weight (kg) 0.230303
Lead Count 8
Package Type SOIC
Package Width or Size .150In(3.90mm)
Soldering Composition Matte Tin

Alternative Descriptions

AT24C256C Series 256 Kb (32 K x 8) 1.7 V I2C-Compatible Serial EEPROM - SOIC-8 | Future Electronics
Microchip Technology, AT24C256C-SSHL-T | RS
Serial Eeprom, 256Kbit, 1Mhz, Soic-8 | Newark Electronics
1.8-5.5V, 1MHz, Ind Temp, 8-SOIC-N | Microchip Technology
EEPROM Serial-2Wire 256K-bit 32K x 8 1.8V/2.5V/3.3V/5V 8-Pin SOIC T/R | Avnet America

Frequently Asked Questions

Where can I find additional details, specifications and documents for a AT24C256C-SSHL-T?

Additional datasheets, footprints and schematics for AT24C256C-SSHL-T are listed on our Part Details page. You can also find images and similar parts to AT24C256C-SSHL-T on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for AT24C256C-SSHL-T on our Product Comparison page. Access via the 'View Pricing & Stock' button to view AT24C256C-SSHL-T price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does AT24C256C-SSHL-T fall under?

The AT24C256C-SSHL-T is listed under Semiconductors - ICs > Memory > EEPROM.

Can I view similar or alternative parts?

You can view similar parts to AT24C256C-SSHL-T when available in the EEPROM range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the AT24C256C-SSHL-T you can contact the distributor directly for product support, shipping queries etc.

Is the AT24C256C-SSHL-T RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

Which authorised distributors for AT24C256C-SSHL-T have stock available?

Authorised distributors including Future Electronics, RS, Farnell, Newark Electronics and element14 have stock available or on a lead time for AT24C256C-SSHL-T.

How do I check stock and lead times for all distributors?

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