25LC256-I/MF Microchip Integrated Circuit (Small Outline No-lead) In Stock
25LC256-I/MF is a Microchip 256 Kbit SPI serial EEPROM offering 10 MHz clock, 1,000,000 write/erase cycle endurance, and 200-year data retention. It operates from 2.5 V to 5.5 V and is packaged in a DFN-8 (2 mm × 3 mm) form factor. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25LC256-I/MF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.4900(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 256 Kbit (32 KB) SPI EEPROM with 10 MHz clock supports fast sequential page reads in burst transfers for logging-intensive embedded applications
- 1,000,000 write/erase cycle endurance paired with 200-year data retention ensures long service life in mission-critical configuration storage
- 2 mm × 3 mm DFN-8 package delivers the same 256 Kbit density as SOIC-8 in half the board area for space-constrained designs
Applications
The 25LC256-I/MF is used widely in embedded systems for storing non-volatile configuration data, calibration coefficients, and firmware parameters that must survive power cycles. Industrial PLCs, smart energy meters, and medical diagnostic devices rely on its 1,000,000 write/erase cycle endurance to support frequent parameter updates over product lifetimes exceeding 10 years. Its 10 MHz SPI interface allows microcontrollers to read a full 256-byte page in under 200 µs, making it suitable for fast boot-time configuration loading.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | DFN-S-8 |
| Factory Lead Time | 14Weeks |
| YTEOL | 8 |
| 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 |
| Reverse Pinout | NO |
| Screening Level | AEC-Q100 |
| Serial Bus Type | SPI |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.006mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 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
How does the 25LC256-I/MF write cycle endurance and data retention compare to typical flash memory in embedded logging applications?
The 25LC256-I/MF guarantees 1,000,000 write/erase cycles per byte location and a minimum 200-year data retention at room temperature, substantially exceeding the 100,000-cycle endurance and 10-year retention typical of NOR flash used in microcontrollers. For applications writing configuration parameters daily over a 20-year product life — roughly 7,300 write events — the 25LC256-I/MF provides more than 100× write-cycle margin, making over-engineering with wear leveling unnecessary.
What supply voltage range does the 25LC256-I/MF support, and can it share a 3.3 V SPI bus with common microcontrollers?
The 25LC256-I/MF operates from 2.5 V to 5.5 V, which covers both 3.3 V and 5 V MCU SPI buses without any level-shifting hardware. At 3.3 V supply the device supports a 10 MHz SPI clock, allowing a 32-byte page to be read in approximately 25 µs — fast enough for boot-time parameter loading in most embedded systems without blocking the application for a perceptible delay.
For a compact IoT gateway PCB, how does the DFN-8 package of the 25LC256-I/MF save board space compared to an equivalent SOIC-8 EEPROM?
The DFN-8 package of the 25LC256-I/MF measures 2 mm × 3 mm and occupies approximately 6 mm² of PCB area, compared to the 8-lead SOIC-8 which typically requires about 29 mm² including courtyard. This roughly 80% area reduction is significant in multi-layer IoT gateway boards where dozens of components compete for space near the processor, and the no-lead package also improves thermal performance by reducing lead inductance in high-speed SPI signal paths running at 10 MHz.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.9300 | $1.93 |
| 100+ | $1.6800 | $168.00 |
| 240+ | $1.6261 | $390.27 |
| 480+ | $1.5986 | $767.33 |
| 960+ | $1.5713 | $1508.43 |
| 2520+ | $1.4900 | $3754.80 |
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