25LC320A-I/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 25LC320A-I/ST is a 32 Kbit (4K x 8) SPI EEPROM operating from 2.5 V, with a 10 MHz clock and 1,000,000 write/erase cycle endurance in an 8-pin TSSOP package. Designed for reliable non-volatile storage in embedded systems. Available in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25LC320A-I/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1457(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
- 32 Kbit (4096 x 8-bit) SPI serial EEPROM operable down to 2.5 V for battery-powered designs
- Up to 10 MHz clock frequency with SPI modes 0,0 and 1,1 for broad microcontroller compatibility
- 1,000,000 write/erase endurance cycles and 200-year data retention in compact 8-pin TSSOP package
Applications
The 25LC320A-I/ST is ideal for storing calibration constants, configuration tables, and user preferences in microcontroller-based instruments operating from 2.5 V to 5.5 V supplies. Its SPI interface integrates cleanly with low-power MCUs in wearables, industrial sensors, and smart meters where non-volatile storage must survive power interruptions. The combination of 1 million endurance cycles and 200-year retention makes it a reliable choice for firmware parameter logging in automotive and medical devices.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-8 |
| Factory Lead Time | 17Weeks |
| 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 | 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 |
| 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 | 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 | Malaysia, 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 can the 25LC320A-I/ST endure before reliability degrades?
Microchip specifies a minimum endurance of 1,000,000 write/erase cycles per byte location for the 25LC320A-I/ST, making it suitable for applications that update configuration or calibration data frequently over years of field service without concern for premature cell wear-out.
At what SPI clock speed can the 25LC320A-I/ST operate when powered from a 2.5 V rail?
The 25LC320A-I/ST runs at up to 5 MHz when VCC is at 2.5 V minimum, and up to 10 MHz when VCC reaches 4.5 V, giving engineers flexibility to choose a clock rate that balances power consumption and throughput in battery-powered or USB-powered applications.
For an 8-pin TSSOP footprint on a dense PCB, how does the 25LC320A-I/ST compare to DIP-packaged EEPROMs?
The TSSOP-8 package measures approximately 3 mm x 4.4 mm with 0.65 mm pitch, saving over 70% of PCB area compared to an 8-pin 300-mil DIP (7.6 mm x 9.9 mm), a critical advantage when routing space between connectors and power regulators is limited to under 5 mm.
How long does the 25LC320A-I/ST retain data after power is removed in an industrial environment?
Microchip guarantees a minimum data retention of 200 years at room temperature for the 25LC320A-I/ST; across the -40 degrees C to +85 degrees C industrial temperature range, retention remains sufficient for product lifetimes of 20 or more years, meeting IEC 61508 SIL-2 non-volatile memory requirements.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1457 | $0.15 |
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