25AA256-I/SM Microchip Integrated Circuit (Small Outline Packages) In Stock
The 25AA256-I/SM is a Microchip 256Kbit SPI serial EEPROM organized as 32K x 8 bits, operating from 1.8V at 3 MHz up to 5.5V at 10 MHz. It provides 1 million write/erase cycle endurance and 200-year minimum data retention in an 8-pin SOIJ package. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25AA256-I/SM Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 256Kbit (32K x 8) SPI EEPROM with wide voltage range from 1.8V to 5.5V and up to 10 MHz clock for high-speed serial data access
- 1,000,000 write/erase cycle endurance with 200-year minimum data retention ensuring reliable non-volatile storage over product lifetime
- Page write capability with 64-byte page buffer and hardware write-protect pin for data integrity in mission-critical applications
Applications
The 25AA256-I/SM is extensively used in embedded systems for storing firmware parameters, calibration data, and user configuration settings in consumer electronics and industrial controllers. Its wide voltage range enables direct interfacing with both 1.8V and 3.3V microcontrollers without level shifters, simplifying design in IoT gateways and sensor hubs. Automotive infotainment systems and telematics units also deploy this EEPROM for persistent data logging and non-volatile parameter storage.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIJ-8 |
| Factory Lead Time | 6Weeks |
| 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,.3 |
| 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 |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the capacity and organization of the 25AA256-I/SM?
The 25AA256-I/SM offers 256Kbit of storage organized as 32,768 x 8 bits, providing 32KB of addressable byte-wide EEPROM memory suitable for configuration data, log files, and parameter tables in embedded systems.
What is the maximum SPI clock speed supported by the 25AA256-I/SM?
The 25AA256-I/SM supports up to 10 MHz SPI clock at 2.5V to 5.5V and up to 3 MHz at 1.8V, enabling fast data transfers compatible with most microcontrollers and SoCs across different voltage domains.
Does the 25AA256-I/SM have a write protection feature?
Yes, the 25AA256-I/SM includes a hardware write-protect (WP) pin and software-configurable block-write protection via a status register, providing robust data integrity safeguards for critical non-volatile storage applications.
What package is used for the 25AA256-I/SM?
The 25AA256-I/SM is housed in an 8-pin SOIJ (Small Outline IC with J-bend leads) package, compatible with standard SOIC-8 footprints and suitable for automated surface-mount assembly on standard PCBs.
How long can data be stored in the 25AA256-I/SM?
The 25AA256-I/SM guarantees a minimum data retention of 200 years, making it suitable for applications requiring long-term reliable storage such as medical devices, industrial equipment, and automotive systems.
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