25AA256-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock

Name: 25AA256-I/SN
Brand: Microchip
SKU: 25AA256-I/SN
Availability: InStock

Microchip 25AA256-I/SN is a 256Kbit (32K x 8) SPI serial EEPROM with 1.8V minimum supply in SOIC-8 package. Supports 10MHz max clock frequency with 1 million write/erase cycles endurance. Available from stock with worldwide shipping.

ACTIVEIntegrated CircuitVerified Jul 2026

Package / Visual Reference

25AA256-I/SNSmall Outline Packages

Quick Facts

Manufacturer: Microchip
Package: Small Outline Packages
Pin Count: 8
Lifecycle: ACTIVE
Datasheet: 25AA256-I/SN Datasheet PDF
Category: Integrated Circuit
Price: From $1.2907(MOQ 1)
Temp Range: -40.0°C to 85.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of 25AA256-I/SN?

256Kbit (32K x 8) storage density ideal for firmware settings and data logging in embedded systems
1.8V minimum supply operation at 3MHz enabling low-power battery-operated designs
10MHz maximum SPI clock frequency for high-speed communication with microcontrollers
1,000,000 write/erase cycle endurance with 200-year minimum data retention for long-term reliability

What is 25AA256-I/SN used for?

The 25AA256-I/SN is commonly used in microcontroller systems, IoT gateways, and industrial automation equipment requiring reliable non-volatile data storage over SPI. Its 256Kbit capacity is suitable for storing configuration tables, calibration coefficients, and event logs in space-constrained designs. The 1.8V compatibility makes it an excellent fit for battery-powered wearables, portable instruments, and low-power sensor nodes.

What are the specifications of 25AA256-I/SN?

Pbfree Code	Yes
Manufacturer Package Code	SOIC-8
Factory Lead Time	7Weeks
YTEOL	8
Additional Feature	OPERATES WITH 1.8VMIN @ 3MHZ
Clock Frequency-Max (fCLK)	10MHz
Data Retention Time-Min	200
Endurance	1000000 Write/Erase Cycles
JESD-30 Code	R-PDSO-G8
JESD-609 Code	e3
Memory Density	262144bit
Memory IC Type	EEPROM
Memory Width	8
Number of Functions	1
Number of Ports	1
Number of Words	32768words
Number of Words Code	32000
Operating Mode	SYNCHRONOUS
Organization	32KX8
Output Characteristics	3-STATE
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	SOP8,.23
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Parallel/Serial	SERIAL
Peak Reflow Temperature (Cel)	260
Programming Voltage	2.5V
Qualification Status	Not Qualified
Serial Bus Type	SPI
Standby Current-Max	0.000001A
Supply Current-Max	0.005mA
Supply Voltage-Max (Vsup)	5.5V
Supply Voltage-Min (Vsup)	1.8V
Supply Voltage-Nom (Vsup)	2.5V
Surface Mount	YES
Technology	CMOS
Temperature Grade	INDUSTRIAL
Terminal Finish	Matte Tin (Sn)
Terminal Form	GULL WING
Terminal Pitch	1.27mm
Terminal Position	DUAL
Write Cycle Time-Max (tWC)	5ms
Write Protection	HARDWARE/SOFTWARE
Package	Small Outline Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.32.00.51
Country of Origin	Thailand

Where can I find the 25AA256-I/SN datasheet?

25AA256-I/SN Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for 25AA256-I/SN?

Compatible alternatives and drop-in replacements for 25AA256-I/SN:

25AA256-I/SMMicrochip Technology Inc

256K, 32K X 8 1.8V SERIAL EE

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

What is the storage capacity and organization of the 25AA256-I/SN?

The 25AA256-I/SN provides 256Kbit of EEPROM storage organized as 32,768 bytes (32K x 8). This capacity is suitable for firmware configurations, calibration data tables, event logs, and user preferences in embedded microcontroller applications.

What are the operating voltage and speed specifications of the 25AA256-I/SN?

The 25AA256-I/SN operates from 1.8V to 5.5V supply voltage. At 1.8V minimum, the maximum SPI clock frequency is 3MHz, while at higher voltages it supports up to 10MHz, enabling flexible integration with a wide range of microcontroller platforms.

How long can data be retained in the 25AA256-I/SN and how many write cycles does it support?

The 25AA256-I/SN guarantees a minimum data retention of 200 years and supports up to 1,000,000 write/erase cycles per byte, ensuring excellent long-term reliability for embedded systems that perform frequent configuration updates or data logging.

What package and compliance certifications does the 25AA256-I/SN carry?

The 25AA256-I/SN is packaged in a SOIC-8 (R-PDSO-G8) form factor, which is widely used and easy to hand-solder or reflow. It is fully RoHS compliant with Pb-free construction (JESD-609 code e3) and has a typical factory lead time of 7 weeks.

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AvailabilityIn Stock

Reference Price (USD)

From $1.2907

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Qty.	Unit Price	Ext. Price
1+	$1.2907	$1.29

pcs

Unit price: $1.2907 · Total: $1.29

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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25AA256-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock

What are the key features of 25AA256-I/SN?

What is 25AA256-I/SN used for?

What are the specifications of 25AA256-I/SN?

Compliance & Regulatory

Where can I find the 25AA256-I/SN datasheet?

What are equivalent replacements for 25AA256-I/SN?

Frequently Asked Questions

What is the storage capacity and organization of the 25AA256-I/SN?

What are the operating voltage and speed specifications of the 25AA256-I/SN?

How long can data be retained in the 25AA256-I/SN and how many write cycles does it support?

What package and compliance certifications does the 25AA256-I/SN carry?

Related Guides

ICL7660ACPAZ Negative Voltage Charge Pump Design Guide

C0402C103K3RACTU 10 nF MLCC Design Guide

STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply

STM32H725IGT3 High-Performance MCU Design Guide

Why Buy from FindMyChip

About Microchip

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