24FC256-I/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
24FC256-I/MS is a 256 Kbit I2C serial EEPROM from Microchip with 1 MHz clock support, 1 million write/erase cycle endurance, and 200-year data retention in an MSOP-8 package. It operates over industrial temperature range with 8-device addressable I2C interface. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24FC256-I/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5711(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) capacity with 1 MHz I2C clock enables fast bulk data storage and retrieval in embedded logging and configuration applications
- 1 million write/erase cycles with 200-year data retention provides exceptional longevity for field-deployed industrial and automotive systems
- Up to 8 devices addressable on a single I2C bus via 3 hardware address pins, scaling non-volatile storage up to 2 Mbit without additional bus interfaces
Applications
24FC256-I/MS is used for data logging, firmware parameter storage, and calibration coefficient retention in industrial PLCs, smart meters, and medical monitoring devices. Its 32 KB capacity and 1 MHz I2C interface accommodate substantial configuration datasets in microcontroller-based systems running from 2.5 V to 5.5 V rails. The MSOP-8 package supports dense PCB layouts in handheld instruments and automotive body control modules requiring non-volatile memory with industrial-grade reliability.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 11Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 1MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| I2C Control Byte | 1010DDDR |
| JESD-30 Code | S-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,.19 |
| Package Shape | SQUARE |
| 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 | 0.65mm |
| Terminal Position | DUAL |
| 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/MS:
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Frequently Asked Questions
How does the 64-byte page write buffer of 24FC256-I/MS affect firmware update performance?
24FC256-I/MS supports a 64-byte page write buffer, meaning a single write cycle programs up to 64 bytes before the 5 ms write cycle time applies. Writing a full 32 KB image requires 512 page write operations, taking approximately 2.56 seconds at maximum page utilization. Burst writes larger than 64 bytes wrap around within the page, so firmware must align transfers to 64-byte boundaries to avoid data corruption during sequential writes.
Can multiple 24FC256-I/MS devices share the same I2C bus to expand storage beyond 32 KB?
Yes. 24FC256-I/MS provides 3 hardware address pins (A0, A1, A2), allowing up to 8 devices on a single I2C bus. This configuration expands total addressable non-volatile storage to 256 Kbit times 8 devices, equaling 2 Mbit (256 KB), all accessible at 1 MHz without additional bus controllers. This multi-device topology is commonly used in data loggers needing large non-volatile buffers.
How does 24FC256-I/MS compare to 24LC256 when selecting a drop-in replacement for a 3.3 V system?
24FC256-I/MS is rated for 2.5 V to 5.5 V operation while 24LC256 operates from 2.5 V to 5.5 V as well, making them electrically compatible. The FC variant supports 1 MHz fast-mode I2C versus 400 kHz for older LC versions, offering 2.5 times faster transfers at 1 MHz on the same 2-wire bus. Both share the same MSOP-8 pinout, enabling a direct drop-in replacement with no PCB changes required.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7700 | $0.77 |
| 3+ | $0.5711 | $1.71 |
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