24FC256-I/SM Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 24FC256-I/SM is a 256 Kbit (32K x 8) I2C serial EEPROM operating from 2.5 V to 5.5 V supply. It communicates over a 1 MHz I2C bus and offers 1,000,000 write/erase cycles with 200-year data retention. Packaged in an 8-pin SOIJ for compact SMT designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24FC256-I/SM Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6185(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 (32K x 8) capacity in an 8-pin SOIJ package for high-density storage
- 1 MHz fast-mode I2C interface for rapid data read/write transfers
- 1,000,000 write/erase cycle endurance for high-reliability applications
- 200-year minimum data retention ensures long-term nonvolatile storage
- 2.5 V to 5.5 V supply range compatible with 3.3 V and 5 V systems
- Hardware write protection pin safeguards stored configuration data
Applications
The 24FC256-I/SM is widely used for storing calibration data, configuration tables, and firmware parameters in industrial sensor modules, medical devices, and consumer electronics. Its 256 Kbit capacity and 1 MHz I2C interface make it suitable for microcontroller systems that need to log operational data or save user settings across power cycles. The device is also deployed in smart meters and IoT edge nodes where compact, low-power nonvolatile memory is essential.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIJ-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 1MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| I2C Control Byte | 1010DDDR |
| 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 | OPEN-DRAIN |
| 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 |
| Reverse Pinout | NO |
| Screening Level | AEC-Q100 |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000005A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.7V |
| 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 |
| 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 24FC256-I/SM:
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Frequently Asked Questions
How many write cycles can the 24FC256-I/SM handle before wear affects data integrity?
The 24FC256-I/SM is rated for 1,000,000 write/erase cycles per byte, and it maintains data retention for a minimum of 200 years after the last write. This endurance level supports frequent logging applications such as industrial event recorders that write thousands of entries per day over a product lifetime.
What supply voltage does the 24FC256-I/SM require, and is it compatible with 3.3 V microcontrollers?
The 24FC256-I/SM operates from 2.5 V to 5.5 V, making it directly compatible with both 3.3 V and 5 V microcontroller I/O without level shifting. The wide supply range simplifies mixed-voltage board designs and reduces BOM complexity.
For a data-logging IoT node needing 32 KB of nonvolatile storage, what advantages does the 24FC256-I/SM offer over embedded Flash?
Unlike internal Flash, the 24FC256-I/SM provides 1,000,000 byte-level write cycles and an independent 8-pin SOIJ footprint that does not consume microcontroller die area. Its 1 MHz I2C bus allows byte-granular updates in under 5 ms per page write, and the hardware write-protect pin prevents accidental data corruption during power instability.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6251 | $0.63 |
| 25+ | $0.6185 | $15.46 |
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