25AA256-I/MF Microchip Integrated Circuit (Small Outline No-lead) In Stock
The 25AA256-I/MF is a 256Kbit (32K x 8) SPI serial EEPROM from Microchip with a 1.8V minimum operating voltage, 10MHz clock speed, and 1,000,000 write/erase cycle endurance. It offers 200-year data retention and is housed in a compact 8-pin DFN-S no-lead surface-mount package. Available from authorized distributors with full RoHS compliance and worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25AA256-I/MF 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 up to 10MHz clock for fast data access in embedded systems
- 1.8V minimum operation enables use in the most power-constrained IoT and portable designs
- 1,000,000 write/erase cycle endurance with 200-year data retention for highly reliable non-volatile storage
- Ultra-compact 8-pin DFN-S no-lead package minimizes PCB footprint in space-critical applications
Applications
The 25AA256-I/MF is designed for embedded systems that require reliable, high-speed non-volatile data storage via a standard SPI interface, including configuration parameter storage, event logging, and firmware backup. Its 1.8V minimum operating voltage makes it particularly well-suited for ultra-low-power IoT devices, wearable electronics, and battery-operated sensor nodes where energy efficiency is paramount. The tiny DFN-S package also makes it an excellent fit for miniaturized modules, smart cards, and high-density multi-layer PCB designs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | DFN-S-8 |
| Factory Lead Time | 14Weeks |
| 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-N8 |
| 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 | SOLCC8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| 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 | NO LEAD |
| 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 No-lead |
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 | Philippines, 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/MF?
The 25AA256-I/MF provides 256Kbits of non-volatile EEPROM storage, organized as 32,768 bytes (32K x 8 bits). This capacity is well-suited for storing firmware parameters, calibration tables, user preferences, and data logs in embedded microcontroller applications.
What clock speed does the 25AA256-I/MF support?
The 25AA256-I/MF supports SPI clock frequencies up to 10MHz at nominal supply voltages, and at least 3MHz at its minimum 1.8V operating voltage. This relatively high-speed interface allows rapid read/write operations, minimizing the time the host processor must spend accessing external memory.
How long does the 25AA256-I/MF retain data and how many write cycles does it support?
The 25AA256-I/MF is rated for a minimum of 1,000,000 write/erase cycles and guarantees at least 200 years of data retention once written. These specifications provide excellent long-term reliability, making the device suitable for applications that require frequent data updates or decades-long field deployment.
What package does the 25AA256-I/MF use and what are its advantages?
The 25AA256-I/MF is packaged in an 8-pin DFN-S (Dual Flat No-lead Small) surface-mount package, which offers a significantly smaller PCB footprint compared to SOIC or TSSOP alternatives. The no-lead package also improves thermal and electrical performance, making it ideal for miniaturized, high-density board designs in portable and wearable products.
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