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Microchip Technology AT24C64AW-10SI-2.7
- Part No.:
- AT24C64AW-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT24C64AW-10SI-2.7.pdf
- Description:
- IC EEPROM 64KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,899
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Product details
Overview
AT24C64AW-10SI-2.7 from Microchip Technology (formerly Atmel) is a 64 Kbit I²C-compatible serial EEPROM organized as 8192 × 8 bits, operating from 2.7V to 5.5V, featuring 400 kHz clock rate at 1.8V–3.6V, hardware write protection via WP pin, and 32-byte page write mode. It is used in industrial control systems for parameter storage and calibration data retention.
For engineers reviewing the AT24C64AW-10SI-2.7 datasheet, AT24C64AW-10SI-2.7 pinout, AT24C64AW-10SI-2.7 application, or AT24C64AW-10SI-2.7 equivalent, key selection considerations include voltage range compatibility (2.7V–5.5V), I²C timing compliance at extended temperature (−40°C to +85°C), page write endurance (1 million cycles), and JEDEC SOIC-8 package footprint constraints.
Technical Context
The AT24C64AW-10SI-2.7 implements a standard two-wire I²C interface with open-drain SDA and Schmitt-triggered SCL inputs, supporting bidirectional data transfer and noise-suppressed communication up to 400 kHz across its full 1.8V–5.5V supply range. Its internal address decoder uses A0–A2 pins to support up to eight devices on a shared bus.
It features hardware-based write protection via the WP pin, self-timed 5 ms max write cycle, and automatic address incrementing during sequential reads. Memory is partitioned into 256 pages of 32 bytes each, enabling partial-page writes without erasing adjacent data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 65,536 bits (8192 × 8), sufficient for firmware configuration tables or sensor calibration coefficients in embedded controllers. |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V microcontrollers without level-shifting. |
| I²C Clock Rate | 400 kHz at 1.8V–3.6V - enables fast parameter updates in real-time systems while maintaining signal integrity. |
| Write Cycle Time | Max 5 ms - defines minimum interval between successive write commands; impacts firmware update latency. |
| Endurance | 1 million write cycles - ensures reliable operation over 10+ years in daily-configurable industrial equipment. |
| Data Retention | 100 years at 25°C - guarantees long-term storage of critical device identity or security keys without refresh. |
| Operating Temperature | −40°C to +85°C - qualified for use in automotive body control modules and factory automation PLCs. |
| Package | 8-lead JEDEC SOIC (8S1) - industry-standard footprint compatible with automated PCB assembly and rework workflows. |
Pinout & Package
AT24C64AW-10SI-2.7 is housed in an 8-lead JEDEC SOIC (8S1) package: 0.150" wide, gull-wing leads, 1.27 mm pitch, 4.90 mm × 3.90 mm body size, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired logic levels set unique I²C slave address (0x50–0x57); floating pins default to GND via internal bias. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up; shares bus with other I²C peripherals. |
| SCL | Serial Clock Input | Master-generated clock; Schmitt trigger input rejects noise; controls timing of all read/write transfers. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes; tied to GND enables full memory access. |
| VCC | Power Supply | Primary power rail (2.7–5.5V); supplies internal logic and EEPROM array; decoupling capacitor required. |
| GND | Ground Reference | Signal and power return path; must be low-impedance connection to minimize I²C noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| 32-byte Page Write Mode | Enables burst programming of up to 32 bytes per transaction, reducing I²C bus occupancy by >75% vs. byte-wise writes. |
| Schmitt Trigger Inputs | Provides hysteresis on SCL/SDA to reject EMI-induced glitches in noisy industrial environments (e.g., motor drives). |
| Hardware Write Protection | WP pin allows irreversible lockdown of stored parameters (e.g., MAC address, calibration offsets) against accidental overwrite. |
| Low Standby Current | 2.0 µA at 2.7V - extends battery life in portable instrumentation where EEPROM remains powered but idle. |
| Cascadable Architecture | Supports up to eight AT24C64AW-10SI-2.7 devices on one I²C bus using A0–A2 address bits, simplifying multi-node BOMs. |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing temperature-compensated gain/offset coefficients for analog front-end sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed 100-year retention and 1M-cycle endurance under field recalibration cycles. Use Value: Eliminates need for external backup power or supercapacitors during firmware updates or brownout events. |
Use Scenario: Holding user-selectable therapy settings (e.g., infusion rate, alarm thresholds) in portable insulin pumps. IC Role / Device Role / Timing Role: Secure, low-power configuration memory accessed only during setup-no runtime I²C traffic overhead. Use Value: Meets IEC 62304 Class C safety requirements via deterministic write timing (5 ms max) and hardware WP lock. |
| Automotive Body Control Module | Smart Energy Metering |
Use Scenario: Recording door lock actuation history and mirror position presets in 12V vehicle subsystems. IC Role / Device Role / Timing Role: Robust I²C slave operating across −40°C to +85°C with 2.7V–5.5V supply tolerance during cold-crank transients. Use Value: Survives automotive load-dump surges (up to 6.25V absolute max) without latch-up or data corruption. |
Use Scenario: Archiving tariff schedules, meter ID, and tamper-event logs in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: High-reliability data logger with 1M write cycles-supports daily log entries for >27 years. Use Value: Enables regulatory compliance via guaranteed data integrity without periodic memory refresh or wear-leveling firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics M24C64-WMN6TP | Same 64Kbit capacity, 2.5V–5.5V range, 400 kHz I²C, but lacks 1.8V operation and has 10 ms max write time. | Not suitable for 1.8V battery-powered designs; higher write latency affects high-frequency configuration updates. | Select when cost sensitivity outweighs low-voltage operation and faster write performance. |
| ON Semiconductor CAT24C64WI-GT3 | Identical 64Kbit, 2.7V–5.5V, 400 kHz, SOIC-8 package, but rated only to +70°C (not extended industrial −40°C to +85°C). | Unqualified for automotive or industrial ambient environments requiring full temperature range validation. | Choose only for commercial-grade applications where ambient temperature stays below 70°C. |
Compared with M24C64-WMN6TP and CAT24C64WI-GT3, AT24C64AW-10SI-2.7 uniquely delivers 1.8V–5.5V operation with 5 ms write time and full −40°C to +85°C qualification-making it the only option for battery-backed, wide-temperature, high-throughput EEPROM use cases.
Availability
AT24C64AW-10SI-2.7 is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and automotive subsystems requiring stable component supply across extended temperature and voltage ranges.
Supply support for AT24C64AW-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 acquired Atmel in 2016 and maintains full product continuity, technical documentation, and manufacturing control for the AT24Cxx family.
The AT24C64AW-10SI-2.7 belongs to Microchip's serial EEPROM product line, designed specifically for robust, low-power, I²C-based nonvolatile storage in space-constrained industrial and automotive applications.
FAQ
What is the maximum I²C clock frequency supported by AT24C64AW-10SI-2.7?
The AT24C64AW-10SI-2.7 supports up to 400 kHz clock frequency across its full 1.8V–3.6V supply range. At 4.5V–5.5V, the maximum clock rate remains 400 kHz per AC characteristics table. This enables high-speed parameter loading in real-time embedded systems without compromising timing margin.
Does AT24C64AW-10SI-2.7 support 1.8V operation?
No - AT24C64AW-10SI-2.7 is a 2.7V-rated variant (VCC = 2.7V to 5.5V). The "-2.7" suffix explicitly denotes this voltage grade. For 1.8V operation, the correct part is AT24C64AW-10SI-1.8, which is functionally identical but characterized down to 1.8V.
How many devices can share the same I²C bus with AT24C64AW-10SI-2.7?
Up to eight AT24C64AW-10SI-2.7 devices can share one I²C bus using the A0, A1, and A2 address pins to configure unique 3-bit device addresses (0x50–0x57). Each pin can be hardwired to VCC or GND, or left floating (internally pulled down).
What is the purpose of the WP pin on AT24C64AW-10SI-2.7?
The WP (Write Protect) pin on AT24C64AW-10SI-2.7 provides hardware-level memory lockdown: when driven high to VCC, all write operations-including byte, page, and erase-are inhibited. When grounded, full read/write access is enabled. This prevents accidental firmware corruption during system debug or field updates.
Is AT24C64AW-10SI-2.7 qualified for automotive applications?
AT24C64AW-10SI-2.7 is rated for industrial temperature (−40°C to +85°C) and meets AEC-Q200 stress test requirements for passive components. While not AEC-Q100 qualified as an IC, its extended temperature range, 1M write endurance, and 100-year data retention make it widely deployed in automotive body electronics and infotainment subsystems.
AT24C64AW-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:
- 5ms
- 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
AT24C64AW-10SI-2.7 FAQ
1.How can I place an order for AT24C64AW-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C64AW-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 AT24C64AW-10SI-2.7 reliable?
The price and inventory of AT24C64AW-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 AT24C64AW-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C64AW-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C64AW-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C64AW-10SI-2.7?
AT24C64AW-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C64AW-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 AT24C64AW-10SI-2.7?
For technical support, including AT24C64AW-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C64AW-10SI-2.7 requirements.
6.How does Aetrix verify that AT24C64AW-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C64AW-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 AT24C64AW-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C64AW-10SI-2.7?
All AT24C64AW-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C64AW-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 AT24C64AW-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT24C64AW-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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