25AA040A-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The 25AA040A-I/SN is a Microchip 4Kbit SPI serial EEPROM organized as 512 x 8 bits, operating from 1.8V with up to 10 MHz clock speed. It provides 1 million write/erase cycle endurance and 200-year minimum data retention in an industry-standard 8-pin SOIC package. Available from global distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25AA040A-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4Kbit (512 x 8) SPI EEPROM with 1.8V minimum operation and up to 10 MHz clock frequency for high-speed low-power serial data access
- 1,000,000 write/erase cycle endurance with 200-year minimum data retention ensuring long-lasting reliable non-volatile storage
- Industry-standard 8-pin SOIC package with SPI interface, hardware write-protect pin, and block-write protection for data security
Applications
The 25AA040A-I/SN is commonly used in microcontroller-based systems to store calibration constants, device configuration, and user-defined parameters in consumer electronics and embedded IoT nodes. Its 1.8V minimum operating voltage makes it directly compatible with modern low-power SoCs and ARM-based microcontrollers in battery-operated devices such as wearables and wireless sensors. Industrial automation equipment also employs this EEPROM for persistent non-volatile storage of operational settings and trim data.
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) | 1.8V |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the memory capacity and organization of the 25AA040A-I/SN?
The 25AA040A-I/SN provides 4Kbit (4,096 bits) of EEPROM storage organized as 512 x 8 bits, offering 512 bytes of byte-addressable non-volatile memory suitable for storing configuration parameters, calibration values, and small data tables.
What is the maximum SPI clock speed for the 25AA040A-I/SN?
The 25AA040A-I/SN supports up to 10 MHz SPI clock frequency, enabling fast read and write operations compatible with most microcontrollers. The device operates from 1.8V, making it suitable for low-voltage embedded systems.
How durable is the 25AA040A-I/SN in terms of write cycles and data retention?
The 25AA040A-I/SN is rated for 1,000,000 write/erase cycles per byte with a minimum 200-year data retention time, making it suitable for applications that perform frequent writes such as data logging and parameter updates.
Does the 25AA040A-I/SN support write protection?
Yes, the 25AA040A-I/SN includes a hardware write-protect (WP) pin and software-selectable block write protection through a status register, allowing protection of the upper quarter, upper half, or the entire memory array.
What package does the 25AA040A-I/SN use?
The 25AA040A-I/SN is available in an 8-pin SOIC package (JEDEC R-PDSO-G8), one of the most widely used surface-mount IC packages. It is compatible with standard PCB footprints and supported by all major assembly processes.
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