25LC040A-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip 25LC040A-I/SN is a 4 Kbit SPI serial EEPROM in SOIC-8 package running at up to 10 MHz. It offers 1,000,000 write/erase cycles endurance and 200-year data retention, making it a compact, reliable choice for non-volatile configuration and parameter storage in embedded systems.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25LC040A-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2500(MOQ 10)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4 Kbit (512 bytes) SPI serial EEPROM with up to 10 MHz clock frequency
- 1,000,000 write/erase cycle endurance for long-service life in write-intensive applications
- 200-year minimum data retention time
- Standard 4-wire SPI interface compatible with most microcontrollers
- SOIC-8 package enabling easy PCB placement in space-constrained designs
- Byte and page write modes for flexible data management
Applications
The 25LC040A-I/SN is designed for embedded systems that require small-capacity non-volatile storage of configuration data, device addresses, or calibration values via a simple SPI interface. Its 4 Kbit capacity and compact SOIC-8 package make it well-suited for IoT sensor nodes, wearable devices, and microcontroller-based control boards. The 1,000,000 write/erase cycle endurance ensures reliable operation in applications requiring periodic parameter updates over the product lifetime.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-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 | 4096bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 512words |
| Number of Words Code | 512 |
| Operating Mode | SYNCHRONOUS |
| Organization | 512X8 |
| Output Characteristics | 3-STATE |
| 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 | 0.000001A |
| 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 | 1.27mm |
| Terminal Position | DUAL |
| 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 | Mainland China, Taiwan, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 25LC040A-I/SN:
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Frequently Asked Questions
What memory capacity and access speed does the 25LC040A-I/SN offer for embedded storage applications?
The 25LC040A-I/SN provides 4 Kbit (512 bytes) of SPI EEPROM storage with a maximum SPI clock frequency of 10 MHz. This capacity and speed are sufficient for storing configuration registers, device serial numbers, and factory calibration data in microcontroller-based systems with minimal firmware overhead.
How does the endurance rating of the 25LC040A-I/SN support applications with frequent parameter updates?
The 25LC040A-I/SN is rated for 1,000,000 write/erase cycles per address location, ensuring long operational life even in applications that update stored parameters frequently. Combined with a 200-year data retention minimum, it is suitable for industrial sensors, smart meters, and IoT devices that log data or update configuration values regularly over multi-year deployments.
Can the 25LC040A-I/SN interface directly with 3.3 V and 5 V microcontrollers without additional circuitry?
Yes, the 25LC040A-I/SN operates across a supply voltage range of 1.8 V to 5.5 V, making it directly compatible with 1.8 V, 3.3 V, and 5 V microcontroller SPI buses without level-shifting hardware. The 4-wire SPI interface with CS, SCK, SI, and SO signals connects to standard SPI peripherals on virtually any 8-bit or 32-bit MCU platform.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $0.6400 | $6.40 |
| 25+ | $0.5300 | $13.25 |
| 100+ | $0.4900 | $49.00 |
| 300+ | $0.2650 | $79.50 |
| 1000+ | $0.2600 | $260.00 |
| 2000+ | $0.2500 | $500.00 |
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