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AT24C64N-10SI-2.7
Microchip Technology
IC EEPROM 64KBIT I2C 8SOIC
1430 Pcs New Original In Stock
EEPROM Memory IC 64Kbit I2C 400 kHz 900 ns 8-SOIC
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5.0 / 5.0
- (373 Ratings)
AT24C64N-10SI-2.7
Product Overview
1289767
DiGi Electronics Part Number
AT24C64N-10SI-2.7-DGManufacturer
Microchip Technology
AT24C64N-10SI-2.7
Description
IC EEPROM 64KBIT I2C 8SOICInventory
1430 Pcs New Original In Stock
EEPROM Memory IC 64Kbit I2C 400 kHz 900 ns 8-SOIC
Quantity
Minimum 1
Minimum 1
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AT24C64N-10SI-2.7 Technical Specifications
Category
Memory, Memory
Packaging
-
Series
-
Product Status
Obsolete
DiGi-Electronics Programmable
Not Verified
Memory Type
Non-Volatile
Memory Format
EEPROM
Technology
EEPROM
Memory Size
64Kbit
Memory Organization
8K x 8
Memory Interface
I2C
Clock Frequency
400 kHz
Write Cycle Time - Word, Page
10ms
Access Time
900 ns
Voltage - Supply
2.7V ~ 5.5V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.209", 5.30mm Width)
Supplier Device Package
8-SOIC
Base Product Number
AT24C64
Datasheet & Documents
HTML Datasheet
AT24C64N-10SI-2.7-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.32.0051
Additional Information
Standard Package
100
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
製品に関しての質問に対して、対応が早くて助かりました。価格も競争力あり、また利用したいです。
de desembre 02, 2025
DiGi Electronics’ customer service is unmatched in professionalism.
de desembre 02, 2025
DiGi Electronics sets a high standard for eco-friendly packaging in the industry.
de desembre 02, 2025
Excellent pricing and responsive after-sales help make DiGi Electronics stand out in the market.
de desembre 02, 2025
Every interaction with their after-sales team leaves me feeling valued and well-supported.
de desembre 02, 2025
Their customer service team’s dedication truly sets them apart from competitors.
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Frequently Asked Questions (FAQ)
Is the AT24C64N-10SI-2.7 still a viable choice for new designs given its obsolete status, and what are the key risks of continuing to use it in production?
The AT24C64N-10SI-2.7 is marked as obsolete by Microchip Technology, which means it is no longer recommended for new designs and may face future supply shortages or sudden end-of-life discontinuation. While existing inventory might still be available, relying on it introduces significant supply chain risk, especially for long-lifecycle products. Additionally, being RoHS non-compliant limits its use in regulated markets like the EU. For new designs, we strongly recommend migrating to a modern, actively supported alternative such as the M24C64-RMN6TP or CAV24C64WE-GT3, which offer pin compatibility, improved reliability, and full compliance with current environmental standards.
Can I safely replace the AT24C64N-10SI-2.7 with the M24C64-WMN6TP in an existing design without hardware or firmware changes?
Yes, the M24C64-WMN6TP from STMicroelectronics is a direct functional and pin-compatible replacement for the AT24C64N-10SI-2.7 in most applications. Both devices share the same 8K x 8 organization, 2.7V to 5.5V supply range, 400 kHz I2C interface, and 8-SOIC package. However, verify that your system does not rely on undocumented timing margins or specific write-cycle behaviors, as subtle differences in internal architecture can affect long-term reliability under marginal power conditions. Always validate the replacement in your actual operating environment, especially if your application performs frequent writes or operates near the voltage extremes.
What are the critical design considerations when using the AT24C64N-10SI-2.7 in automotive or industrial environments, particularly regarding temperature and voltage stability?
Although the AT24C64N-10SI-2.7 supports an operating temperature range of -40°C to 85°C, its performance under transient voltage conditions—common in automotive power systems—requires careful design. The device lacks built-in brown-out protection, so voltage dips below 2.7V during engine cranking or load dumps can corrupt write operations. To mitigate this, implement a supervisor circuit to disable writes during undervoltage events and ensure robust I2C pull-up resistor selection to maintain signal integrity at temperature extremes. Also, consider adding decoupling capacitance close to the VCC pin to stabilize supply during fast transients, as marginal power delivery can lead to silent data corruption during page writes.
How does the write endurance of the AT24C64N-10SI-2.7 compare to modern EEPROMs like the BR24G64FJ-3AGTE2, and what impact does this have on firmware update strategies?
The AT24C64N-10SI-2.7 guarantees 1 million write cycles per memory location, which is standard for EEPROMs of its era. However, newer alternatives like the BR24G64FJ-3AGTE2 from Rohm often exceed this with enhanced cell design and better wear-leveling support in companion MCUs. In applications involving frequent configuration updates or logging (e.g., sensor calibration, event counters), this difference becomes critical. Without wear leveling in firmware, fixed-address writes can wear out sectors prematurely. We recommend implementing software-based wear leveling or switching to a more robust EEPROM with higher endurance if your application exceeds 100 writes per day per address over a 10-year lifecycle.
Why is the AT24C64N-10SI-2.7 not RoHS compliant, and what are the implications for product certification and global market access?
The AT24C64N-10SI-2.7 is RoHS non-compliant due to the use of lead-based solder in its packaging, which violates Directive 2011/65/EU restricting hazardous substances in electrical equipment. This prevents its use in products sold in the European Union and other regions enforcing RoHS regulations. Even if your final product is exempt (e.g., certain industrial or medical devices), documentation and traceability become more complex. For global market readiness and future-proofing, replace it with a compliant alternative such as the CAV24C64WE-GT3, which is both RoHS-compliant and pin-compatible. Continuing to use non-compliant parts may also complicate recycling programs and increase liability in sustainability audits.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
AT24C64N-10SI-2.7 CAD Models
Microchip Technology AT24C64N-10SI-2.7 PCB symbols & footprints
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