25AA512-I/SM Microchip Integrated Circuit (Small Outline Packages) In Stock
25AA512-I/SM is a 512 Kbit SPI serial EEPROM from Microchip with 1M write/erase endurance, 200-year data retention, and 2.5 V to 5.5 V operation in a compact SOIJ-8 package. Supports up to 20 MHz SPI clock for fast data logging and configuration storage. From $1.10 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- 25AA512-I/SM Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5806(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
- 512 Kbit (64 KB) SPI EEPROM with up to 20 MHz clock speed and 128-byte page write buffer for high-throughput data logging applications
- 1,000,000 write/erase cycle endurance and 200-year minimum data retention ensure long-term reliability in industrial and automotive systems
- Wide supply range of 2.5 V to 5.5 V with ultra-low standby current enabling use in both battery-powered and line-powered equipment
Applications
25AA512-I/SM suits data logging instruments, configuration storage in industrial controllers, and parameter retention in smart meters where 64 KB of non-volatile SPI memory must withstand 1 million write cycles. Its compact SOIJ-8 package and 2.5 V to 5.5 V operating range make it compatible with 3.3 V microcontrollers, embedded gateways, and automotive body ECUs that store calibration tables or trip records. The device also fits network equipment and medical monitors that require firmware overlay storage accessible via a standard 4-wire SPI interface.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIJ-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Additional Feature | 2.5V TO 5.5V @ 0.1MHz |
| Clock Frequency-Max (fCLK) | 20MHz |
| Data Retention Time-Min | 200 |
| Endurance | 1000000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 524288bit |
| Memory IC Type | EEPROM |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 65536words |
| Number of Words Code | 64000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 64KX8 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 5V |
| Qualification Status | Not Qualified |
| Screening Level | AEC-Q100 |
| Serial Bus Type | SPI |
| Standby Current-Max | 0.000001A |
| Supply Current-Max | 0.01mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| 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 |
| 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 | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 25AA512-I/SM:
Frequently Asked Questions
What SPI clock frequency does 25AA512-I/SM support, and how large is its page write buffer?
25AA512-I/SM supports SPI clock rates up to 20 MHz (at 2.5 V to 5.5 V), and its internal write buffer holds up to 128 bytes per page-write cycle, allowing a full page to be written in a single 128-byte transfer followed by an internal programming time of approximately 5 ms.
How do the endurance and retention specs of 25AA512-I/SM compare to standard EEPROM requirements in industrial designs?
25AA512-I/SM is rated for 1,000,000 write/erase cycles per address location and a minimum data retention of 200 years at 25°C, exceeding the IEC 61508 SIL 2 requirements for many industrial data-logging and configuration-storage applications where typical grade devices only guarantee 100,000 cycles and 100-year retention.
Can 25AA512-I/SM operate directly from a 3.3 V microcontroller without a level shifter?
Yes. The 25AA512-I/SM operates from 2.5 V to 5.5 V, so it runs natively on a 3.3 V rail without any level-shifting circuit; its logic-high input threshold is 0.7 × VCC (2.31 V at 3.3 V supply), which is compatible with standard LVCMOS 3.3 V I/O from MCUs such as PIC18, STM32, and ARM Cortex-M series.
For a compact wearable sensor, how does the SOIJ-8 package of 25AA512-I/SM reduce board area?
The SOIJ-8 (R-PDSO-G8) package measures approximately 5.28 mm × 3.76 mm with a 1.27 mm pitch, occupying about 20 mm² of PCB area — roughly 60% less than an equivalent DIP-8 package — making it ideal for space-constrained wearable and IoT sensor boards with tightly packed component layouts.
When would 25AA512-I/SM be a better choice than 25LC256 for a data-logging application?
25AA512-I/SM provides 512 Kbit (64 KB) of storage versus 25LC256's 256 Kbit (32 KB), doubling available log space in the same SOIJ-8 footprint and at similar per-unit cost; choosing the 512 Kbit device halves the number of devices needed for 64 KB targets, saving one SPI chip-select line and simplifying firmware address management.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5806 | $0.58 |
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