24LC256-E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
24LC256-E/SN is a 256Kbit (32K x 8) I2C serial EEPROM from Microchip with up to 400kHz fast-mode clock and 1,000,000 write/erase endurance. Features 200-year data retention, configurable I2C address, and extended -40°C to 125°C temperature rating in an 8-pin SOIC package. Available in stock worldwide.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24LC256-E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4430(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 256Kbit (32K x 8) capacity with 1,000,000 write/erase cycle endurance for demanding embedded storage
- Fast-mode I2C interface at up to 400kHz reducing data transfer time versus standard-mode 100kHz EEPROMs
- Configurable I2C device address via A0/A1/A2 pins allowing up to eight devices on a single bus
- Extended temperature range -40°C to 125°C for reliable operation in automotive and industrial environments
Applications
The 24LC256-E/SN is widely used to store configuration data, calibration constants, and user settings in embedded systems including industrial controllers, smart meters, medical devices, and automotive ECUs. Its 32KB capacity and 400kHz I2C fast-mode make it suitable for applications requiring larger non-volatile storage with faster write throughput than smaller EEPROMs. The extended temperature version and 200-year data retention make it a preferred choice for long-lifecycle industrial and automotive designs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Clock Frequency-Max (fCLK) | 0.4MHz |
| 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 | 4.5V |
| Qualification Status | Not Qualified |
| 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) | 2.5V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| 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 24LC256-E/SN:
Frequently Asked Questions
What is the storage capacity of the 24LC256-E/SN and how is it organized?
The 24LC256-E/SN provides 256Kbit of EEPROM storage organized as 32,768 x 8 bits (32KB). This capacity is suitable for storing firmware parameters, calibration tables, event logs, and user configuration data in microcontroller-based embedded systems.
What I2C speed does the 24LC256-E/SN support and how many devices can share the bus?
The 24LC256-E/SN supports I2C fast-mode operation at up to 400kHz. Up to eight 24LC256 devices can share a single I2C bus simultaneously by configuring the three hardware address pins A0, A1, and A2, using the standard control byte 1010DDDR.
What is the operating temperature range of the 24LC256-E/SN?
The 24LC256-E/SN (-E suffix) is rated for the extended industrial and automotive temperature range of -40°C to +125°C. This makes it suitable for under-hood automotive applications, outdoor industrial equipment, and other harsh environments requiring reliable EEPROM operation across wide temperature swings.
How long does the 24LC256-E/SN retain data and how many write cycles does it support?
The 24LC256-E/SN guarantees a minimum data retention of 200 years and supports at least 1,000,000 write/erase cycles per memory cell. These specifications make it appropriate for applications with frequent configuration updates or data logging over the full product lifetime.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4430 | $0.44 |
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