25LC640A-I/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 25LC640A-I/MS is a 64 Kbit (8K x 8) SPI serial EEPROM operating from 2.5 V minimum at up to 10 MHz clock frequency. Offers 1,000,000 write/erase cycles and 200-year data retention in a compact MSOP-8 package. Available in RoHS-compliant tape-and-reel format with worldwide distribution.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25LC640A-I/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6397(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 25LC640A-I/MS?
- 64 Kbit SPI EEPROM with 10 MHz max clock and 2.5 V minimum operation enables fast, low-voltage non-volatile storage in battery-powered designs
- 1,000,000 write/erase cycle endurance and 200-year data retention guarantee long-term reliability for configuration and calibration storage
- Compact MSOP-8 package occupies minimal PCB area while providing standard SPI compatibility with virtually any microcontroller
What is 25LC640A-I/MS used for?
The 25LC640A-I/MS is ideal for storing configuration parameters, calibration data, and firmware settings in microcontroller-based systems requiring compact, low-voltage non-volatile memory. Its 10 MHz SPI interface and 2.5 V operation make it compatible with low-power ARM, PIC, and AVR microcontrollers in IoT sensors, wearable devices, and industrial instruments. The 1 million write cycle endurance also suits data logging applications where small blocks of data are updated frequently over the product lifetime.
What are the specifications of 25LC640A-I/MS?
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 11Weeks |
| YTEOL | 9 |
| Additional Feature | OPERATES WITH 2.5VMIN @ 5MHZ |
| Clock Frequency-Max (fCLK) | 10MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 65536bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 8192words |
| Number of Words Code | 8000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 8KX8 |
| Output Characteristics | 3-STATE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 5V |
| 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) | 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 | Thailand |
Where can I find the 25LC640A-I/MS datasheet?
25LC640A-I/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 25LC640A-I/MS?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the write endurance and data retention of 25LC640A-I/MS, and how do these affect storage reliability?
25LC640A-I/MS guarantees 1,000,000 write/erase cycles per byte location and a minimum 200-year data retention period, ensuring long-term reliability for configuration and calibration data. These specifications make it suitable for designs where EEPROM cells are updated frequently, such as event counters or runtime settings. The 64 Kbit (8K x 8) capacity provides ample space for typical embedded system parameter storage without overusing write cycles on any single cell.
At what minimum supply voltage and maximum SPI clock speed does 25LC640A-I/MS operate?
25LC640A-I/MS operates from a minimum supply voltage of 2.5 V at SPI clock frequencies up to 5 MHz, and supports up to 10 MHz clock when the supply is at 4.5 V or above. This low-voltage capability makes it directly compatible with 3.3 V MCU systems without level translation. Battery-powered IoT nodes running at 2.5 V–3.3 V rails can use it for reliable configuration storage without additional regulators.
How does the MSOP-8 package of 25LC640A-I/MS compare to SOIC-8 for space-constrained PCB layouts?
The MSOP-8 package used by 25LC640A-I/MS has a footprint of approximately 3 mm × 3 mm, significantly smaller than the SOIC-8's 4.9 mm × 3.9 mm outline. This 40–50% area reduction benefits designs with tight PCB real estate, such as wearables and compact sensor modules. The 0.65 mm pin pitch of MSOP-8 requires fine-pitch soldering capability but is well within standard SMT assembly processes.
Is 25LC640A-I/MS RoHS-compliant and what lead time should procurement teams expect?
Yes, 25LC640A-I/MS is Pb-free and RoHS-compliant per its JESD-609 e3 code, suitable for consumer and industrial product certifications requiring lead-free components. Factory lead time is listed at 11 weeks, so procurement teams should plan buffer stock for designs nearing production ramp. With a YTEOL of 9 years, sourcing continuity is reasonable for mid-lifecycle industrial or consumer products.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8600 | $0.86 |
| 3+ | $0.6397 | $1.92 |
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