25LC256-I/SN More Semiconductors - ICs by Microchip Technology

256Kb 2.5V SPI Serial EEPROM

Status: Active
Series: 25LC256
RoHS: Compliant
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The Microchip 25LC256 is a 256 Kb Serial EEPROM utilizing the industry standard Serial Peripheral Interface (SPI) compatible serial bus. The device is organized as one block of 32,768 x 8-bit and is optimized for use in consumer electronics, industrial, medical, and automotive applications where reliable and dependable nonvolatile memory storage is essential. Software write protection allows the user to protect ¼, ½, or the entire memory array. A hardware write protect pin is also provided, which additionally protects against inadvertent writes to the status register. The EEPROM is available in a variety of space-saving packaging options.
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32,768 x 8-bit (256 Kbit)
Supports SPI modes 0 and 3
Up to 10 MHz clock frequency
Self-Timed Erase and Write Cycles (5 ms max.)
Read current: 6mA (Max) at 10 MHz
Write current: 5 mA (Max) at 5.5 V
Standby current: 5 μA (Max) at 5.5 V
Block Write Protection: Protect 1/4, 1/2 or Entire Array
More than 1 million erase/write cycles
Data retention > 200 years
Industrial (I): -40°C to 85°C
Extended (E): -40°C to +125°C
Automotive AECQ-100 Qualified1
Factory Programming Available
Available in standard packages including 8-lead PDIP, SOIC, SOIJ, and TSSOP, as well as 5x6mm DFN


Density (Organization) 256 Kbit
Operating Voltage Min. (V) 2.5
Oper Voltage Max (V) 5.5
Max. Clock Freq. 10 MHz
Page Size (bytes) 64
Write Protected True
Write Protect Scheme Quarter, Half, Whole Array
Endurance 1,000,000
Data Retention (Years) 0
Bus Modes SPI
Battery Backup False
Pins | Packaging 8 | SOIC
Temp Range -40C to +85C
Packing Media Tube (100)


Application Notes
AN909 - Interfacing SPI? Serial EEPROMs to PIC16 Devices
AN966 - Interfacing SPI Serial EEPROMs to Microchip PICmicro® Microcontrollers
AN995 - Using the C18 Compiler and the MSSP to Interface SPI? EEPROMs with PIC18 Devices
AN1000 - Using the MSSP Module to Interface SPI? Serial EEPROMs with PIC18 Devices
AN1006 - Interfacing SPI(TM) Serial EEPROMs to PIC18 Devices
AN1018 - Using the C18 Compiler to Interface SPI Serial EEPROMs with PIC18 Devices
AN1019 - EEPROM Endurance Tutorial
AN1040 - Recommended Usage of Microchip SPI Serial EEPROM Devices
AN1073 - Interfacing Microchip SPI Serial EEPROMs to NXP P89LPC9XX Microcontrollers Using Hardware Peripheral
AN1069 - Using C30 Compiler and the SPI module to Interface EEPROMs with dsPIC33F and PIC24F
AN1096 - Using the C30 Compiler to Interface SPI Serial EEPROMs with dsPIC33
AN1193 - Using C to Interface 8051 MCUs with SPI Serial EEPROMs
AN1197 - Using a Hardware Module to Interface 8051 MCUs with SPI Serial EEPROMs
AN1198 - Interfacing 8051 MCUs with SPI Serial EEPROMs
AN1419 - Adding Flexibility by Using Multiple Footprints for SPI Serial EEPROMs

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.078
Shipping Weight (kg) 0.25
Lead Count 8
Package Type SOIC
Package Width or Size .150In(3.90mm)
Soldering Composition Matte Tin

Alternative Descriptions

SMT TUBE | Component Electronics
EEPROM Serial-SPI 256K-bit 32K x 8 3.3V/5V 8-Pin SOIC N | Avnet Europe
SERIAL EEPROM, 256KBIT, 10MHZ, SOIC-8 | Newark Electronics
256K 32K X 8 SER EE | Microchip Technology
Microchip EEPROM SPI 256KB 10MHz 50ns NSOIC | Distrelec
Microchip 25LC256-I/SN Serial EEPROM Memory,256kb,50ns,2.5 to 5.5V 8-Pin SOIC N | Allied Electronics

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