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25LC512-I/MF
Microchip Technology
IC EEPROM 512KBIT SPI 20MHZ 8DFN
2729 Pcs New Original In Stock
EEPROM Memory IC 512Kbit SPI 20 MHz 8-DFN-S (6x5)
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5.0 / 5.0
- (508 Ratings)
25LC512-I/MF
Product Overview
1257651
DiGi Electronics Part Number
25LC512-I/MF-DGManufacturer
Microchip Technology
25LC512-I/MF
Description
IC EEPROM 512KBIT SPI 20MHZ 8DFNInventory
2729 Pcs New Original In Stock
EEPROM Memory IC 512Kbit SPI 20 MHz 8-DFN-S (6x5)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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25LC512-I/MF Technical Specifications
Category
Memory, Memory
Packaging
Tube
Series
-
Product Status
Active
DiGi-Electronics Programmable
Not Verified
Memory Type
Non-Volatile
Memory Format
EEPROM
Technology
EEPROM
Memory Size
512Kbit
Memory Organization
64K x 8
Memory Interface
SPI
Clock Frequency
20 MHz
Write Cycle Time - Word, Page
5ms
Voltage - Supply
2.5V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
8-VDFN Exposed Pad
Supplier Device Package
8-DFN-S (6x5)
Base Product Number
25LC512
Datasheet & Documents
PCN Assembly/Origin
Mold Compound Qualification 07/Oct/2014
HTML Datasheet
25LC512-I/MF-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0051
Additional Information
Standard Package
60
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
物流の効率性とコスト透明性に優れており、ビジネスパートナーとして最適です。
Dec 02, 2025
カート機能やお気に入り保存など、便利な機能が充実していて助かりました。
Dec 02, 2025
I received my order much sooner than I expected, thanks to their efficient logistics.
Dec 02, 2025
The delivery was prompt, and the product quality is top-level.
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Frequently Asked Questions (FAQ)
Can the 25LC512-I/MF be safely used in a 3.3V automotive control module where voltage transients may briefly exceed 5.5V, and what protection circuitry is recommended?
The 25LC512-I/MF has an absolute maximum supply voltage of 6.5V, but sustained operation above 5.5V violates its recommended operating conditions and risks long-term reliability. In automotive environments with load dump or inductive spikes, even brief overvoltage events can degrade the EEPROM over time. To safely use this part, implement a TVS diode (e.g., SMAJ5.0A) on the VCC line combined with a low-ESR decoupling capacitor (100nF ceramic) placed close to the IC. Additionally, consider a series current-limiting resistor (10–100Ω) between the MCU and the EEPROM’s SCK/MOSI lines to protect against latch-up during transients. Always validate your design with ISO 7637-2 pulse testing if targeting automotive qualification.
Is it safe to replace a STMicroelectronics M95512-WMN6TP with the 25LC512-I/MF in an existing industrial sensor design without firmware changes?
While both the M95512-WMN6TP and 25LC512-I/MF are 512Kb SPI EEPROMs with similar timing and voltage ranges, direct drop-in replacement isn't guaranteed due to subtle protocol differences. The Microchip part supports a higher clock frequency (20 MHz vs. 10 MHz for the ST part), which could expose marginal signal integrity issues on long PCB traces. More critically, the write cycle time for the 25LC512-I/MF is 5 ms per page—slower than the M95512’s typical 3 ms—so firmware that assumes faster writes may timeout. Verify your SPI timing margins and update any write-wait loops or timeouts in firmware. Also, confirm that your layout accommodates the 8-DFN-S (6x5) package, as it differs slightly from the SO8 footprint of the ST device.
How does the 25LC512-I/MF handle repeated partial-page writes in a data-logging application, and what endurance risks should I consider?
The 25LC512-I/MF guarantees 1 million write cycles per byte, but frequent partial-page writes (e.g., updating only a few bytes in a 64-byte page) can accelerate localized wear if not managed properly. Since EEPROMs erase and rewrite entire pages during a write operation, repeatedly modifying the same logical address range without wear-leveling concentrates stress on those physical cells. In high-frequency logging scenarios, implement a circular buffer across multiple pages or use a wear-leveling algorithm in firmware to distribute writes evenly. Avoid writing more than once per minute to the same page unless absolutely necessary. For mission-critical logging, consider pairing the 25LC512-I/MF with a small FRAM (e.g., FM25L16B) for high-write-frequency data, reserving the EEPROM for archival storage.
Can the 25LC512-I/MF operate reliably in a -40°C freezer monitoring system powered by a battery that drops to 2.7V under load, and how does low-voltage performance affect SPI communication?
Yes, the 25LC512-I/MF is rated for operation down to 2.5V and -40°C, making it suitable for freezer applications. However, at voltages near the lower limit (especially under load), ensure your microcontroller’s SPI signals meet the EEPROM’s VIH/VIL thresholds, which become tighter at low voltage. A 2.7V supply may result in marginal high-level input voltage (VIH min = 0.7 × VCC = ~1.89V), so verify that your MCU outputs clean 2.7V logic levels with adequate noise margin. Use short, impedance-controlled traces and avoid long stubs to prevent signal degradation. Additionally, the 20 MHz max clock speed assumes full VCC; at 2.7V, reduce SPI clock to ≤10 MHz to maintain reliable communication. Always test under worst-case cold-start conditions with discharged battery simulation.
What are the key reliability differences between the 25LC512-I/MF and newer serial flash alternatives like the Winbond W25Q512JV, and when should I stick with EEPROM?
The 25LC512-I/MF offers byte-level write granularity and true non-volatility without block erase requirements—critical for parameter storage or frequent small updates—whereas the W25Q512JV (a NOR flash) requires sector erases (4KB minimum) before writing, adding complexity and latency. Flash also typically has lower endurance (~100k cycles vs. 1M for EEPROM). However, flash provides higher density per cost and faster sequential reads. Choose the 25LC512-I/MF when your application involves frequent, small, random writes (e.g., calibration data, error logs, or real-time configuration) where wear and write overhead matter. Opt for flash only if you need large-block data storage (e.g., firmware images) and can tolerate erase cycles. For mixed use cases, consider a hybrid approach: use the 25LC512-I/MF for metadata and the W25Q512JV for bulk data.
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25LC512-I/MF CAD Models
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