25AA320-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The 25AA320-I/SN is a 32 Kbit (4K x 8) SPI serial EEPROM from Microchip, operating at 2.5V to 5.5V supply voltage. It supports up to 1 MHz clock frequency and offers 1,000,000 write/erase cycle endurance with 200-year data retention. Packaged in SOIC-8, it suits low-power embedded data logging and parameter storage.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- 25AA320-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6885(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 25AA320-I/SN?
- 32 Kbit (4K x 8) SPI serial EEPROM with 1 MHz maximum clock
- Wide supply voltage range: 2.5V to 5.5V for flexible system integration
- 1,000,000 write/erase cycle endurance with 200-year data retention
- SOIC-8 package with RoHS-compliant, lead-free construction
- Byte and page write modes with hardware write-protect pin
What is 25AA320-I/SN used for?
The 25AA320-I/SN is widely used in embedded systems for non-volatile data storage, including configuration parameter retention, calibration data logging, and firmware settings in industrial and consumer electronics. It is well suited for microcontroller-based designs requiring reliable serial EEPROM storage in space-constrained SOIC-8 footprints.
What are the specifications of 25AA320-I/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) | 1MHz |
| 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 | 2.5V |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Serial Bus Type | SPI |
| Standby Current-Max | 0.000005A |
| Supply Current-Max | 0.005mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.8V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| 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 25AA320-I/SN datasheet?
25AA320-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for 25AA320-I/SN?
Compatible alternatives and drop-in replacements for 25AA320-I/SN:
Frequently Asked Questions
What clock frequency does the 25AA320-I/SN support, and how does it affect SPI bus design?
The 25AA320-I/SN supports a maximum SPI clock frequency of 1 MHz. This limits bus speed compared to faster flash devices but is adequate for low-bandwidth configuration and logging applications, and simplifies EMI compliance in noise-sensitive environments.
How many write cycles can the 25AA320-I/SN endure before wear-out becomes a concern?
The 25AA320-I/SN is rated for 1,000,000 write/erase cycles with a minimum data retention of 200 years. Designs that write frequently should implement wear-leveling or consider the cycle budget to ensure long-term reliability.
Is the 25AA320-I/SN suitable for 3.3V microcontroller systems without level shifting?
Yes. The 25AA320-I/SN operates from 2.5V to 5.5V supply voltage, making it directly compatible with 3.3V microcontroller I/O logic without additional level-shift circuitry in most standard designs.
What should buyers consider regarding lifecycle and availability of the 25AA320-I/SN?
Introduced in 1996 and with a factory lead time of approximately 6 weeks, the 25AA320-I/SN is a mature, widely stocked SOIC-8 EEPROM. Buyers planning long-term production runs should verify current lifecycle status and consider keeping safety stock to avoid supply gaps.
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About Microchip
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9400 | $0.94 |
| 10+ | $0.9370 | $9.37 |
| 100+ | $0.7864 | $78.64 |
| 1000+ | $0.7800 | $780.00 |
| 2000+ | $0.7003 | $1400.60 |
| 4000+ | $0.6885 | $2753.80 |
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