25LC128-E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 25LC128-E/ST is a 128 Kbit SPI serial EEPROM operating from 2.5 V to 5.5 V, with a 10 MHz clock, 160 ns read access, and 1,000,000 write/erase cycle endurance. The 8-pin TSSOP package and 200-year data retention suit embedded configuration storage and nonvolatile data logging.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25LC128-E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0400(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 25LC128-E/ST?
- 128 Kbit (16 Kbyte) SPI EEPROM with 10 MHz clock for fast serial data access
- Wide 2.5 V to 5.5 V supply range for compatibility with 3.3 V and 5 V systems
- 1,000,000 write/erase cycle endurance for long-service-life data logging
- 200-year data retention for reliable nonvolatile configuration storage
- Compact 8-pin TSSOP package for space-efficient PCB integration
What is 25LC128-E/ST used for?
The 25LC128-E/ST is widely used for firmware configuration storage in microcontroller-based systems, calibration data retention in industrial sensors, and nonvolatile logging in IoT edge nodes. Its 2.5 V to 5.5 V supply range and SPI interface make it compatible with virtually all modern MCU platforms including PIC, AVR, STM32, and ESP32. Medical devices and automotive electronics rely on its 1,000,000-cycle endurance and 200-year data retention for long-life product requirements.
What are the specifications of 25LC128-E/ST?
| 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 | 131072bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 16384words |
| Number of Words Code | 16000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 16KX8 |
| 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 | 5V |
| Qualification Status | Not Qualified |
| Screening Level | AEC-Q100 |
| Serial Bus Type | SPI |
| Standby Current-Max | 0.000005A |
| Supply Current-Max | 0.005mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| 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 | Malaysia, Philippines, Thailand |
Where can I find the 25LC128-E/ST datasheet?
25LC128-E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 25LC128-E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many write cycles does the 25LC128-E/ST support before wear-out?
The 25LC128-E/ST is rated for 1,000,000 write/erase cycles per byte location, providing excellent endurance for frequently updated configuration registers or data logs. Combined with 200-year data retention, it maintains integrity across the full product lifespan of industrial control systems and consumer appliances.
At what SPI clock speed can a microcontroller communicate with the 25LC128-E/ST?
The 25LC128-E/ST supports SPI clock frequencies up to 10 MHz, allowing rapid burst reads of its 16 Kbyte (128 Kbit) address space in microseconds. This makes it practical for real-time configuration retrieval at system startup in 3.3 V or 5 V MCU designs where boot time matters.
Can the 25LC128-E/ST operate reliably in automotive temperature environments?
The E suffix on 25LC128-E/ST designates an extended temperature range from -40°C to 125°C, qualifying it for automotive ECU, body control module, and industrial temperature environments. Its 2.5 V to 5.5 V supply tolerance and 10 MHz SPI interface remain stable across this full operating temperature range.
How does the 25LC128-E/ST compare to 25AA128 for a 3.3 V embedded system?
The 25LC128-E/ST and 25AA128 share the same 128 Kbit capacity and SPI interface, but the 25LC series supports a higher 10 MHz maximum clock versus 1 MHz for 25AA, enabling 10x faster data transfers in 3.3 V microcontroller designs. The TSSOP-8 package of both variants is footprint-compatible for easy board-level substitution.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.3400 | $1.34 |
| 100+ | $1.1600 | $116.00 |
| 1000+ | $1.1000 | $1100.00 |
| 2400+ | $1.0852 | $2604.43 |
| 4800+ | $1.0666 | $5119.87 |
| 5000+ | $1.0400 | $5200.00 |
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