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Microchip Technology AT24C01A-10SU-2.7
- Part No.:
- AT24C01A-10SU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C01A-10SU-2.7.pdf
- Description:
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,346
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Product details
Overview
AT24C01A-10SU-2.7 from Microchip Technology is a 1K-bit (128 × 8) two-wire serial EEPROM optimized for low-voltage industrial applications. It operates from 2.7V to 5.5V, supports 400 kHz I²C bus speed at 2.7V+, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention. It is commonly used in embedded system configuration storage, sensor calibration data logging, and power-management parameter backup.
For engineers reviewing the AT24C01A-10SU-2.7 datasheet, AT24C01A-10SU-2.7 pinout, AT24C01A-10SU-2.7 application, or AT24C01A-10SU-2.7 equivalent, key selection criteria include its SOIC-8 package, 2.7–5.5 V supply range, 8-byte page write capability, Schmitt-triggered noise-immune inputs, and compatibility with standard I²C controllers in microcontroller-based designs.
Technical Context
The AT24C01A-10SU-2.7 implements a fixed 128-word × 8-bit memory array with 7-bit word addressing and uses a two-wire I²C-compatible interface with open-drain SDA/SCL pins. Its internal address counter supports current-address, random-address, and sequential read modes, and it employs acknowledge polling to detect write completion.
It integrates hardware write protection via the WP pin - tied to GND for normal operation or VCC for full-array lock - and includes Schmitt-triggered inputs with 100 ns noise suppression. The device supports partial page writes within its 8-byte pages and performs self-timed writes with ≤5 ms duration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), sufficient for small firmware flags, calibration coefficients, or device ID storage |
| Supply Voltage Range | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V logic domains without level shifting |
| I²C Clock Frequency | Up to 400 kHz at VCC ≥ 2.7 V - enables fast configuration reads during boot or runtime updates |
| Page Write Size | 8 bytes per page - allows efficient burst writes while minimizing bus occupancy and timeout risk |
| Write Endurance | 1 million cycles - supports frequent recalibration or logging in industrial control nodes |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unattended or maintenance-free deployments |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems including HVAC, metering, and PLC peripherals |
Pinout & Package
AT24C01A-10SU-2.7 is supplied in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide, RoHS-compliant and green-marked ("U"). Dimensions: 4.90 mm × 3.90 mm × 1.75 mm (L × W × H), with 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Hard-wired device address inputs | Enable up to eight AT24C01A devices on one I²C bus; all three pins are functional and must be externally set to VCC/GND |
| 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; rising edge samples data, falling edge drives data - synchronizes all transfers |
| WP | Write Protect | Hardware lock: grounded = read/write enabled; tied to VCC = full-array write inhibition |
| GND | Ground Reference | Signal and power return path - must be low-impedance and decoupled near VCC pin |
| VCC | Power Supply | Primary supply input - requires local 100 nF ceramic decoupling capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Two-wire Serial Interface | Fully compliant with I²C-bus specification - interoperable with standard MCU I²C peripherals without protocol translation |
| Schmitt Trigger Inputs | Input hysteresis on SCL/SDA suppresses noise-induced glitches - eliminates need for external RC filtering in noisy environments |
| 8-byte Page Write Mode | Reduces I²C transaction overhead vs. byte-by-byte writes - cuts typical 8-byte update time by >50% and improves bus efficiency |
| Self-timed Write Cycle | Internal timing eliminates software delay loops - simplifies firmware and guarantees write completion before next command |
| Hardware Write Protection | WP pin provides fail-safe, non-volatile lock - prevents accidental overwrites during power transients or firmware faults |
Applications
| Industrial Sensor Node | Smart Meter Calibration Storage |
|---|---|
|
Use Scenario: Storing temperature/humidity offset values and linearization coefficients in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding factory-trimmed parameters accessed at startup and during field recalibration. Use Value: Enables accurate analog measurements across temperature ranges without requiring reprogramming or external NVM management. |
Use Scenario: Retaining energy calibration constants and tariff tables in utility smart meters operating over 10+ year lifetimes. IC Role / Device Role / Timing Role: Tamper-resistant, long-life memory for revenue-critical metrology data that survives mains outages and firmware updates. Use Value: Meets ANSI C12.20 and IEC 62053 accuracy requirements through guaranteed 100-year data retention and 1M-cycle endurance. |
| Embedded Controller Boot Config | IoT Edge Device Identity |
|
Use Scenario: Holding board-specific settings (e.g., CAN node ID, UART baud rate, GPIO defaults) in PLC I/O modules. IC Role / Device Role / Timing Role: Early-boot configuration source read before main application starts - accessed via MCU I²C in <10 ms. Use Value: Eliminates hardcoded config in flash, enabling field-reprogrammable hardware variants using same firmware binary. |
Use Scenario: Storing unique device identifiers (UID), TLS certificate fingerprints, and secure boot keys in cellular-connected gateways. IC Role / Device Role / Timing Role: Secure, low-power persistent storage for cryptographic material - isolated from main MCU flash to reduce attack surface. Use Value: Supports device attestation and zero-touch provisioning without adding dedicated secure element cost or complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01B-SSHM-T | Successor part with enhanced ESD rating (4 kV HBM), identical 1K capacity, SOIC-8, 2.5–5.5 V range | Recommended for new designs; supports same pinout and firmware but offers improved robustness in high-noise industrial environments | Select when designing for long-term availability and higher immunity to assembly-line ESD events |
| M24C01-RMN6TP | STMicroelectronics 1K I²C EEPROM, SOIC-8, 1.8–5.5 V, 400 kHz, 1M endurance, AEC-Q100 Grade 2 qualified | Automotive-qualified variant - suitable for under-hood or infotainment systems requiring extended temperature and reliability validation | Choose for automotive OEM or Tier-1 applications where AEC-Q100 compliance is mandatory |
Compared with AT24C01A-10SU-2.7, the AT24C01B-SSHM-T offers superior ESD resilience for manufacturing and field use, while the M24C01-RMN6TP adds automotive qualification - both retain identical memory organization, I²C timing, and SOIC-8 footprint for drop-in evaluation.
Availability
AT24C01A-10SU-2.7 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter calibration storage, and embedded controller boot configuration requiring stable component supply across multi-year production cycles.
Supply support for AT24C01A-10SU-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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and consumer markets.
The AT24C01A belongs to Microchip's legacy serial EEPROM product line, designed specifically for reliable, low-power, I²C-based configuration and calibration data storage in space-constrained embedded systems.
FAQ
What is the memory organization of the AT24C01A-10SU-2.7?
The AT24C01A-10SU-2.7 contains 1024 bits organized as 128 words × 8 bits. It uses a 7-bit word address for random access and is internally divided into 16 pages of 8 bytes each. This structure enables efficient byte and page write operations and supports sequential reads across page boundaries with automatic address roll-over.
Does the AT24C01A-10SU-2.7 support 1.8 V operation?
No - the AT24C01A-10SU-2.7 is specified only for 2.7 V to 5.5 V operation. The "-2.7" suffix denotes its low-voltage 2.7 V minimum rating. For 1.8 V operation, Microchip offers the AT24C01A-10SU-1.8 variant, which has different DC and AC characteristics and is not interchangeable without design validation.
How does the Write Protect (WP) pin function on the AT24C01A-10SU-2.7?
On the AT24C01A-10SU-2.7, the WP pin provides hardware-level write inhibition: when tied to VCC, all write operations (byte, page, and erase) are blocked across the full 1K array; when grounded, normal read/write functionality is enabled. This feature operates independently of software commands and remains active during power transitions.
Can the AT24C01A-10SU-2.7 be used with standard I²C controllers?
Yes - the AT24C01A-10SU-2.7 fully complies with the standard I²C-bus specification. Its open-drain SDA/SCL pins, 400 kHz maximum clock rate at 2.7 V+, and standard start/stop/acknowledge protocol ensure seamless integration with any MCU or SoC featuring a hardware I²C peripheral, including ARM Cortex-M, PIC, and ESP32 families.
Is the AT24C01A-10SU-2.7 RoHS compliant and halogen-free?
Yes - the "U" suffix in AT24C01A-10SU-2.7 explicitly indicates a green, lead-free, and halogen-free package per Microchip's environmental policy. It meets RoHS Directive 2011/65/EU and is qualified for industrial temperature range (–40°C to +85°C) with JEDEC SOIC-8 packaging.
AT24C01A-10SU-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 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
AT24C01A-10SU-2.7 FAQ
1.How can I place an order for AT24C01A-10SU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C01A-10SU-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 AT24C01A-10SU-2.7 reliable?
The price and inventory of AT24C01A-10SU-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 AT24C01A-10SU-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C01A-10SU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C01A-10SU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C01A-10SU-2.7?
AT24C01A-10SU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C01A-10SU-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 AT24C01A-10SU-2.7?
For technical support, including AT24C01A-10SU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C01A-10SU-2.7 requirements.
6.How does Aetrix verify that AT24C01A-10SU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C01A-10SU-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 AT24C01A-10SU-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C01A-10SU-2.7?
All AT24C01A-10SU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C01A-10SU-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 AT24C01A-10SU-2.7 part is unused and in its original packaging.
Return procedure for AT24C01A-10SU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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