25LC256-I/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 25LC256-I/ST is a 256 kbit SPI serial EEPROM with 10 MHz clock, 200-year data retention, and 1,000,000 write/erase cycle endurance in an 8-pin TSSOP package. Key specs: 2.5 V to 5.5 V supply, 160 ns access time, lead-free JESD-609 e3 compliant. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25LC256-I/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6700(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) SPI serial EEPROM with 10 MHz clock for fast non-volatile data storage
- 1,000,000 write/erase cycle endurance ensures long service life in frequent-update data logging applications
- 2.5 V to 5.5 V wide supply range compatible with both 3.3 V and 5 V system architectures
- 200-year minimum data retention provides near-permanent storage for configuration and calibration data
- 8-pin TSSOP package minimizes PCB footprint in space-constrained embedded systems
Applications
The 25LC256-I/ST is ideal for embedded systems requiring non-volatile storage of configuration parameters, calibration tables, and event logs, such as industrial sensors, smart meters, and consumer appliances that need up to 32 kB of SPI-accessible EEPROM with 1,000,000 write cycle endurance. It also suits automotive accessory modules and IoT edge devices operating from 2.5 V to 5.5 V supplies where a compact 8-pin TSSOP EEPROM with 160 ns access and 10 MHz SPI clock is needed.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| 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 Ports | 1 |
| Number of Words | 32768words |
| Number of Words Code | 32000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 32KX8 |
| Output Characteristics | 3-STATE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| 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 | SPI |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.006mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 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 |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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 | Philippines, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many write/erase cycles does 25LC256-I/ST support, and what data retention is guaranteed?
The 25LC256-I/ST is rated for a minimum of 1,000,000 write/erase cycles per memory location, providing excellent endurance for data logging and configuration update applications. It also guarantees a minimum data retention time of 200 years, ensuring stored calibration coefficients or system parameters remain valid throughout the product's operational life without requiring power.
For a 3.3 V microcontroller design, is 25LC256-I/ST directly compatible without a level shifter?
Yes, the 25LC256-I/ST operates from a supply voltage range of 2.5 V to 5.5 V, making it directly compatible with 3.3 V microcontroller systems without level-shifting circuitry. Its SPI interface supports clock frequencies up to 10 MHz at the operating supply, allowing the MCU to read and write the 256 kbit (32 kB) EEPROM at full speed on a standard SPI bus.
How compact is the 25LC256-I/ST package for high-density PCB layouts?
The 25LC256-I/ST is housed in an 8-pin TSSOP (thin shrink small-outline package), which has a body width of approximately 3.0 mm and a lead pitch of 0.65 mm, making it one of the smallest available EEPROM packages for 256 kbit devices. This compact footprint is well suited for wearable electronics, smart cards, and sensor modules where board space is limited and the 160 ns access time meets most embedded read cycle requirements.
Is 25LC256-I/ST a suitable EEPROM for automotive accessory modules requiring wide temperature operation?
The 25LC256-I/ST's industrial-grade I-suffix variant supports a wide operating temperature range appropriate for automotive accessory modules, and its 2.5 V to 5.5 V supply range accommodates regulated automotive rails. With 1,000,000 endurance cycles and 200-year data retention, it reliably stores mileage, seat position, or radio presets across the vehicle's lifetime, while the 8-pin TSSOP package fits within compact dashboard and door-module PCB footprints.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.8000 | $1.80 |
| 100+ | $1.4200 | $142.00 |
| 150+ | $0.7100 | $106.50 |
| 300+ | $0.6950 | $208.50 |
| 750+ | $0.6700 | $502.50 |
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