25LC256-I/SNG Microchip Integrated Circuit (Other) In Stock
Microchip 25LC256-I/SNG is a 256 Kbit SPI serial EEPROM in an 8-pin SOIC package operating up to 10 MHz. It offers 1,000,000 write/erase cycle endurance, 200-year data retention, and byte or page write modes, ideal for non-volatile data storage in embedded systems.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25LC256-I/SNG Datasheet PDF
- Category
- Integrated Circuit
- 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) SPI serial EEPROM with up to 10 MHz clock frequency
- 1,000,000 write/erase cycle endurance for high-reliability data logging
- 200-year minimum data retention time
- 8-bit wide memory interface with byte and page write capabilities
- SPI bus interface compatible with most microcontroller platforms
- Compact 8-pin SOIC package for space-constrained PCB designs
Applications
The 25LC256-I/SNG is ideal for storing non-volatile configuration data, calibration parameters, and event logs in embedded microcontroller systems communicating over SPI. Its 256 Kbit capacity and 10 MHz SPI speed make it a practical choice for data logging applications in industrial sensors, medical devices, and consumer electronics. The 1,000,000 write/erase endurance supports frequent updates in automotive and industrial environments where reliable parameter storage is critical.
Specifications
| Pbfree Code | Yes |
| YTEOL | 5 |
| Clock Frequency-Max (fCLK) | 10MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| 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 |
| 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 |
| Qualification Status | Not Qualified |
| Serial Bus Type | SPI |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.005mA |
| 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 | 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/SOFTWARE |
| Package | Other |
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 25LC256-I/SNG:
Frequently Asked Questions
What is the storage capacity and SPI clock speed of the 25LC256-I/SNG?
The 25LC256-I/SNG provides 256 Kbit (32 KB) of EEPROM storage accessible over an SPI bus at up to 10 MHz clock frequency. This combination allows fast read and write access for configuration data, calibration coefficients, and event logs in embedded systems using 8-bit or 32-bit microcontrollers.
How does the endurance and data retention of the 25LC256-I/SNG compare to typical EEPROM specifications?
The 25LC256-I/SNG is rated for 1,000,000 write/erase cycles per byte location and guarantees a minimum data retention time of 200 years. These specifications exceed many commodity EEPROMs, making it suitable for industrial control systems, automotive modules, and medical devices where long-term reliable data preservation is required.
Which microcontroller families interface directly with the 25LC256-I/SNG without additional level-shifting hardware?
The 25LC256-I/SNG operates over a standard 4-wire SPI interface and supports supply voltages from 2.5 V to 5.5 V, making it directly compatible with 3.3 V and 5 V microcontrollers such as Microchip PIC, Atmel AVR, and ARM Cortex-M devices. No level-shifting circuitry is needed when the MCU SPI voltage matches the EEPROM supply within the 2.5 V to 5.5 V operating range.
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