25AA256-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
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.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25AA256-I/SN 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) 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 25AA256-I/SN:
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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