25LC320/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 25LC320/SN is a 32 Kbit SPI serial EEPROM operating from 2.5 V to 5.5 V with a 2 MHz clock, 230 ns access time, and up to 1,000,000 write/erase endurance cycles. It offers 200-year minimum data retention in an industry-standard 8-pin SOIC package, making it a reliable non-volatile storage solution for microcontroller-based embedded systems.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- 25LC320/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6188(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 25LC320/SN?
- 32 Kbit (4096 byte) SPI serial EEPROM for compact non-volatile data storage
- Wide supply range: 2.5 V to 5.5 V compatible with 3.3 V and 5 V systems
- Up to 2 MHz SPI clock for fast read access at 230 ns
- 1,000,000 write/erase cycle endurance for high-update-rate applications
- 200-year minimum data retention for long-life industrial deployments
- 8-pin SOIC package with standard footprint for easy PCB layout
What is 25LC320/SN used for?
The 25LC320/SN is used to store calibration constants, configuration parameters, and event logs in microcontroller-based industrial and consumer systems where reliable non-volatile storage in a small footprint is needed. It is also employed in firmware configuration backups for smart meters, motor drive inverters, and medical monitoring devices that require guaranteed data retention over a 200-year rated lifespan.
What are the specifications of 25LC320/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| Date Of Intro | 1996-10-01 |
| YTEOL | 3 |
| Clock Frequency-Max (fCLK) | 2MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 32768bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 4096words |
| Number of Words Code | 4000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 4KX8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 5V |
| Qualification Status | Not Qualified |
| 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 | COMMERCIAL |
| Terminal Finish | MATTE TIN |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Write Cycle Time-Max (tWC) | 5ms |
| Write Protection | HARDWARE |
| 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 25LC320/SN datasheet?
25LC320/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 25LC320/SN?
Compatible alternatives and drop-in replacements for 25LC320/SN:
Frequently Asked Questions
How many write/erase cycles does 25LC320/SN support, and what does that mean for a design that updates parameters daily?
The 25LC320/SN is rated for up to 1,000,000 write/erase cycles per byte location. At one write per day, that gives approximately 2,740 years of operational life per cell, making it well-suited for frequently updated calibration or configuration registers in industrial instruments.
Can 25LC320/SN operate on the same 3.3 V SPI bus as a modern ARM Cortex-M microcontroller?
Yes. The 25LC320/SN operates from 2.5 V to 5.5 V and supports SPI clock speeds up to 2 MHz at 3.3 V supply, making it directly compatible with 3.3 V ARM Cortex-M or PIC microcontroller SPI buses without level shifting or additional buffering.
What is the data retention guarantee for 25LC320/SN, and how does it compare to flash-based alternatives for long-life applications?
Microchip specifies a minimum 200-year data retention for the 25LC320/SN at standard operating conditions, which exceeds the typical 10 to 20-year retention of NAND flash. This makes it preferable for certification data, factory calibration records, and long-lived industrial equipment that must retain stored values without periodic refresh cycles.
What is the lead-time situation for 25LC320/SN, and does its YTEOL rating signal a near-term EOL risk?
The 25LC320/SN carries approximately 6 weeks factory lead time with a YTEOL rating of 3, suggesting a relatively short remaining production window. Procurement teams should evaluate the pin-compatible 25AA320A or 25LC320A with updated specs as a long-term replacement and begin qualification early to avoid last-time-buy pressure.
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About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9400 | $0.94 |
| 5+ | $0.8600 | $4.30 |
| 10+ | $0.8300 | $8.30 |
| 51+ | $0.7140 | $36.41 |
| 193+ | $0.7020 | $135.49 |
| 281+ | $0.6188 | $173.88 |
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