24FC256-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 24FC256-I/SN is a 256Kbit (32K x 8) I2C serial EEPROM operating from 2.5V with up to 1MHz clock frequency and 1 million write/erase cycle endurance. Features 200-year minimum data retention in a compact 8-pin SOIC package. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24FC256-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4950(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
- 256Kbit (32K x 8) I2C EEPROM with up to 1MHz fast-mode clock for high-speed non-volatile data storage
- 1,000,000 write/erase cycle endurance with 200-year minimum data retention ensures long-term reliability
- 2.5V low-voltage operation in an 8-pin SOIC-8 package enables easy integration into space-constrained low-power designs
Applications
The 24FC256-I/SN is widely used for storing configuration data, calibration parameters, and user preferences in embedded systems such as industrial controllers, medical devices, and consumer electronics. Its I2C interface with a simple 1010DDDR control byte allows up to eight devices to share the same two-wire bus, enabling scalable data storage expansion. The combination of high endurance and long data retention makes it ideal for data logging and firmware storage applications.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-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,.23 |
| 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 |
| 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 | Taiwan, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 24FC256-I/SN:
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Frequently Asked Questions
What is the storage capacity of the 24FC256-I/SN?
The 24FC256-I/SN provides 256Kbit of non-volatile EEPROM storage, organized as 32,768 x 8-bit (32K bytes). This capacity is suitable for storing configuration tables, calibration data, event logs, and small firmware blobs in embedded applications.
How many write/erase cycles does the 24FC256-I/SN support?
The 24FC256-I/SN is rated for a minimum of 1,000,000 write/erase cycles per memory location, with a minimum data retention time of 200 years. This high endurance makes it reliable for applications with frequent write operations such as data logging or runtime parameter updates.
What interface does the 24FC256-I/SN use and how many devices can share one bus?
The 24FC256-I/SN uses a 2-wire I2C serial interface with a maximum clock frequency of 1MHz. Using the I2C control byte format 1010DDDR, up to eight 24FC256 devices can be addressed on the same I2C bus simultaneously, allowing up to 2Mbit of total EEPROM storage on two wires.
What package does the 24FC256-I/SN use and what are its supply voltage requirements?
The 24FC256-I/SN comes in an 8-pin SOIC (Small Outline IC) package with a manufacturer code of SOIC-8, suitable for standard surface-mount PCB assembly. It operates from a minimum supply voltage of 2.5V, making it compatible with low-voltage microcontroller systems and battery-powered designs.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6600 | $0.66 |
| 25+ | $0.6440 | $16.10 |
| 100+ | $0.6100 | $61.00 |
| 200+ | $0.5200 | $104.00 |
| 400+ | $0.5150 | $206.00 |
| 1000+ | $0.4950 | $495.00 |
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