24CS256-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
24CS256-I/SN is a 256 Kbit (32 KB) I2C serial EEPROM from Microchip in an 8-pin SOIC package, supporting up to 3.4 MHz fast-mode-plus I2C clock. It offers 1,000,000 write/erase cycle endurance and 200-year minimum data retention for reliable non-volatile storage. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 24CS256-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3535(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 (262,144-bit) non-volatile storage in a single 8-pin SOIC package
- Supports fast-mode-plus I2C clock up to 3.4 MHz for high-speed data transfers
- 1,000,000 write/erase cycle endurance for frequent configuration and log data updates
- 200-year minimum data retention ensuring long-term storage reliability
- RoHS-compliant JESD-609 e3 construction for green supply chain compliance
Applications
The 24CS256-I/SN is widely used for storing calibration data, user configuration settings, and event logs in industrial sensors, medical devices, and smart meters that require durable non-volatile memory accessible over I2C. Its 3.4 MHz fast-mode-plus support speeds up firmware-controlled data writes in microcontroller-based systems, reducing memory access time compared to standard 400 kHz I2C EEPROMs. The compact 8-pin SOIC package integrates easily alongside main MCUs and communication modules on single- and double-layer PCBs.
Specifications
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 24 |
| Clock Frequency-Max (fCLK) | 3.4MHz |
| 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 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,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Serial Bus Type | I2C |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.003mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| 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/SOFTWARE |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much data can the 24CS256-I/SN store, and how long will that data remain valid without power?
The 24CS256-I/SN stores 262,144 bits (32 KB) of non-volatile EEPROM data accessible over I2C. Microchip specifies a minimum data retention time of 200 years, ensuring stored calibration tables, firmware parameters, and event logs remain intact across the entire operational lifetime of most industrial and consumer products.
What I2C clock speed does the 24CS256-I/SN support, and why does that matter for a data-logging application?
The 24CS256-I/SN supports I2C fast-mode-plus at up to 3.4 MHz, which is 8× faster than the standard 400 kHz I2C speed. In a data-logging system that writes temperature or pressure samples every second, the 3.4 MHz clock allows the microcontroller to complete a 32-byte page write in under 100 µs, freeing the CPU for other tasks and reducing the risk of data gaps.
When specifying the 24CS256-I/SN for a product with frequent configuration updates, is the write endurance adequate?
The 24CS256-I/SN is rated for 1,000,000 write/erase cycles per address, which is sufficient for applications updating configuration registers or log counters thousands of times per day for several years. For example, writing 1,000 cycles per day consumes the full endurance budget after approximately 2,740 years, making this 256 Kbit EEPROM suitable for virtually all practical embedded configuration-storage use cases.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5400 | $0.54 |
| 10+ | $0.5320 | $5.32 |
| 100+ | $0.4600 | $46.00 |
| 1000+ | $0.4400 | $440.00 |
| 5000+ | $0.4100 | $2050.00 |
| 7500+ | $0.3535 | $2651.25 |
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