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Microchip Technology AT24C64W-10SI-2.7
- Part No.:
- AT24C64W-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT24C64W-10SI-2.7.pdf
- Description:
- IC EEPROM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,572
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Product details
Overview
AT24C64W-10SI-2.7 from Microchip Technology (formerly Atmel) is a 64 Kbit (8192 × 8) I²C-compatible serial EEPROM with 2.7V to 5.5V supply operation, 32-byte page write capability, hardware write protection via WP pin, and industrial temperature range (–40°C to +85°C). It uses an 8-pin SOIC package and supports up to 400 kHz clock rate at 5V.
For engineers reviewing the AT24C64W-10SI-2.7 datasheet, AT24C64W-10SI-2.7 pinout, AT24C64W-10SI-2.7 application, or AT24C64W-10SI-2.7 equivalent, key selection criteria include VCC operating range, page write timing, endurance (1 million cycles), data retention (100 years), and I²C bus compatibility in space-constrained industrial control and automotive subsystems.
Technical Context
The AT24C64W-10SI-2.7 implements a standard two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. It supports bidirectional data transfer using open-drain signaling and acknowledges each byte with a dedicated ninth-cycle ACK bit.
Its memory is organized as 256 pages of 32 bytes each, enabling partial page writes and automatic address incrementing within a page. The WP pin provides hardware-level protection for the upper quadrant (16K bits), and internal low-VCC detection prevents data corruption during brown-out conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64 Kbit (8192 × 8), organized as 256 pages × 32 bytes - enables efficient block-level updates without full-memory erase. |
| Supply Voltage | 2.7V to 5.5V - supports direct integration into 3.3V and 5V systems without level-shifting. |
| Interface | I²C (2-wire serial) - reduces PCB routing complexity and pin count versus SPI or parallel interfaces. |
| Max Clock Rate | 100 kHz at 2.7V; 400 kHz at 5V - balances speed and noise immunity across voltage ranges. |
| Write Cycle Time | 10 ms max self-timed write - eliminates need for external polling delay management in firmware. |
| Endurance | 1 million write cycles - suitable for logging, calibration storage, and configuration update applications. |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unattended or maintenance-free deployments. |
Pinout & Package
AT24C64W-10SI-2.7 is housed in an 8-pin JEDEC SOIC (8S1) package: 0.150" wide body, gull-wing leads, 1.27 mm pitch, RoHS-compliant surface-mount construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired or floating to select one of up to eight devices on shared I²C bus; internally pulled low if unconnected. |
| SDA | Serial Data I/O | Bidirectional open-drain line - requires external pull-up; supports wire-OR with other I²C devices. |
| SCL | Serial Clock Input | Positive-edge sampled input - controls timing of data sampling and output transitions. |
| WP | Write Protect | Active-high hardware lock: tied to VCC disables writes to upper 16K bits; tied to GND enables full memory access. |
| VCC | Power Supply | 2.7V–5.5V logic supply - powers internal logic and memory array; includes brown-out detection circuitry. |
| GND | Ground Reference | Return path for all internal circuits and I/O signals - must be low-impedance for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-triggered inputs | Enables robust operation in electrically noisy environments by rejecting sub-threshold noise spikes on SDA/SCL lines. |
| 32-byte page write mode | Reduces total programming time vs. byte-by-byte writes - critical for fast firmware update or parameter batch storage. |
| Hardware write protection (WP) | Prevents accidental overwrites of critical calibration or security data without software intervention or power cycle. |
| 100-year data retention | Eliminates need for periodic refresh or backup in long-life embedded systems such as utility meters or industrial sensors. |
| Industrial temperature range | Validated operation from –40°C to +85°C - supports deployment in under-hood automotive ECUs and outdoor industrial controllers. |
Applications
| Automotive Body Control Module | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing door lock settings, mirror position presets, and lighting profiles in vehicle body control units. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via I²C during power-up and runtime updates. Use Value: Enables personalized user settings persistence across ignition cycles with guaranteed 100-year data retention and WP-protected factory defaults. | Use Scenario: Holding ladder logic parameters, I/O mapping, and calibration coefficients in programmable logic controllers. IC Role / Device Role / Timing Role: Serial EEPROM interfaced to microcontroller's I²C peripheral for infrequent but mission-critical parameter storage. Use Value: Provides high endurance (1M cycles) for field-updatable configurations while maintaining immunity to EMI in factory-floor environments. |
| Smart Energy Meter Firmware Log | Medical Diagnostic Device Calibration |
Use Scenario: Recording tamper events, voltage sags, and firmware version history in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Low-power, page-write-optimized memory used during meter wake-up intervals for timestamped event logging. Use Value: Achieves ultra-low standby current (≤2 µA at 5.5V) and 10 ms write cycles - minimizing impact on battery-backed real-time clock accuracy. | Use Scenario: Storing sensor offset/gain coefficients and regulatory compliance audit trails in portable ultrasound or ECG analyzers. IC Role / Device Role / Timing Role: Secure, WP-protected nonvolatile memory holding FDA-required calibration data with traceable revision history. Use Value: Hardware write protection prevents unauthorized modification of calibration values, supporting ISO 13485 design control requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip AT24C64D-SSHM-T | Same 64Kbit capacity, 1.7V–5.5V VCC range, TSSOP-8 package, and 1M endurance - but rated for extended temp (–40°C to +125°C). | Supports under-hood automotive use beyond industrial grade; higher max ambient temperature tolerance. | Select when operating above +85°C or requiring AEC-Q200 alignment. |
| ON Semiconductor CAT24C64WI-GT3 | 64Kbit I²C EEPROM, 1.8V–5.5V operation, SOIC-8, 1M write cycles - but no WP pin; write protection implemented only via software address locking. | Lacks hardware write protection - unsuitable where physical tamper resistance is required. | Choose for cost-sensitive consumer applications where WP functionality is not mandated. |
Compared with AT24C64W-10SI-2.7, the AT24C64D-SSHM-T extends temperature capability for harsh environments, while the CAT24C64WI-GT3 omits hardware WP - making AT24C64W-10SI-2.7 the preferred choice for industrial systems requiring both robustness and physical data integrity assurance.
Availability
AT24C64W-10SI-2.7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC configuration storage, smart energy meter firmware logging, and medical diagnostic device calibration requiring stable component supply and long-term lifecycle support.
Supply support for AT24C64W-10SI-2.7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a global semiconductor company specializing in microcontrollers, analog, FPGA, and memory solutions, with a focus on embedded control and connectivity.
The AT24C64W-10SI-2.7 belongs to Microchip's legacy AT24Cxx serial EEPROM product line, designed for reliable, low-power, I²C-based nonvolatile data storage in industrial, automotive, and consumer applications.
FAQ
What is the maximum I²C clock frequency supported by AT24C64W-10SI-2.7?
The AT24C64W-10SI-2.7 supports up to 100 kHz at 2.7V and 400 kHz at 5.0V. Its AC characteristics specify tLOW and tHIGH timing windows that scale with VCC - ensuring reliable communication across its full 2.7V–5.5V operating range without external clock adjustment.
Does AT24C64W-10SI-2.7 include hardware write protection?
Yes, AT24C64W-10SI-2.7 features a dedicated WP (Write Protect) pin. When tied to VCC, it disables writes to the upper quadrant (16K bits) of memory; when grounded, full memory access is enabled. This hardware-level protection operates independently of firmware state.
What package type is used for AT24C64W-10SI-2.7?
AT24C64W-10SI-2.7 uses an 8-pin JEDEC SOIC (8S1) package: 0.150" wide body, gull-wing leads, 1.27 mm lead pitch, and RoHS-compliant surface-mount construction - compatible with standard reflow soldering processes.
How many write cycles can AT24C64W-10SI-2.7 endure before failure?
AT24C64W-10SI-2.7 is rated for 1 million write cycles per memory location. This endurance specification is validated at 5.0V and 25°C per JEDEC standards and applies to both byte and page write operations.
Is AT24C64W-10SI-2.7 suitable for automotive applications?
AT24C64W-10SI-2.7 is qualified for industrial temperature range (–40°C to +85°C) and meets AEC-Q100 stress test requirements for EEPROMs. While not AEC-Q200 certified out-of-box, it is widely deployed in automotive body control and infotainment subsystems where extended temperature support is not required.
AT24C64W-10SI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C64W-10SI-2.7 FAQ
1.How can I place an order for AT24C64W-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64W-10SI-2.7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT24C64W-10SI-2.7 reliable?
The price and inventory of AT24C64W-10SI-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C64W-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C64W-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64W-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64W-10SI-2.7?
AT24C64W-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64W-10SI-2.7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT24C64W-10SI-2.7?
For technical support, including AT24C64W-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64W-10SI-2.7 requirements.
6.How does Aetrix verify that AT24C64W-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C64W-10SI-2.7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT24C64W-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C64W-10SI-2.7?
All AT24C64W-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64W-10SI-2.7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT24C64W-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT24C64W-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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