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Microchip Technology AT24C02-10PU-2.7
- Part No.:
- AT24C02-10PU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C02-10PU-2.7.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,126
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Product details
Overview
AT24C02-10PU-2.7 from Microchip Technology is a 2-Kbit (256 × 8) two-wire serial EEPROM with 2.7V to 5.5V supply operation, 400 kHz I²C interface speed at 2.7V+, Schmitt-trigger inputs for noise immunity, and hardware write protection via the WP pin. It is used in embedded systems for storing calibration data, configuration settings, and device identifiers.
For engineers reviewing the AT24C02-10PU-2.7 datasheet, AT24C02-10PU-2.7 pinout, AT24C02-10PU-2.7 application, or AT24C02-10PU-2.7 equivalent, key selection criteria include voltage range compatibility (2.7–5.5 V), page write capability (8-byte pages), endurance (1 million cycles), data retention (100 years), and JEDEC SOIC-8 packaging with RoHS-compliant green finish.
Technical Context
The AT24C02-10PU-2.7 implements a standard I²C-compatible two-wire interface with open-drain SDA and active-high SCL, supporting both byte and page write modes. Its internal address counter enables sequential reads across memory boundaries, and the WP pin provides hardware-level write lock for critical sectors.
It uses hard-wired A0–A2 pins for device addressing-allowing up to eight devices on a single bus-and features built-in noise suppression via Schmitt-trigger inputs and input filtering. The device operates across industrial temperature (–40°C to +85°C) and supports self-timed write cycles with 5 ms maximum duration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 words × 8 bits), organized as 32 pages of 8 bytes each |
| Supply Voltage | 2.7 V to 5.5 V - enables direct interfacing with 3.3 V and 5 V microcontrollers without level shifting |
| I²C Clock Frequency | Up to 400 kHz at VCC ≥ 2.7 V - supports high-speed configuration updates in real-time systems |
| Write Cycle Time | Max 5 ms - defines minimum interval between successive write commands; impacts firmware retry logic design |
| Endurance | 1 million write/erase cycles - ensures long-term reliability in field-updatable applications like metering or sensor calibration |
| Data Retention | 100 years at +25°C - guarantees nonvolatile storage integrity over product lifetime without refresh |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
AT24C02-10PU-2.7 is supplied in an 8-lead JEDEC SOIC package (package code 8S1), measuring 4.9 mm × 6.0 mm × 1.75 mm, with gull-wing leads and RoHS-compliant green finish ("U" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired LSB of 3-bit device address; enables multi-device I²C bus configuration (up to 8 units) |
| A1 | Device Address Input | Mid-bit of device address; must match external pull-up/pull-down to select unique I²C slave address |
| A2 | Device Address Input | MSB of device address; determines position within 0x50–0x57 I²C address range |
| GND | Ground Reference | Return path for all internal circuitry and I/O; requires low-impedance PCB connection to minimize noise coupling |
| VCC | Power Supply | Primary DC supply input (2.7–5.5 V); decoupling capacitor (0.1 µF) recommended within 10 mm |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes; tied to GND enables full read/write access |
| SCL | Serial Clock Input | Positive-edge clock for I²C transactions; requires external pull-up resistor (typically 2.2–10 kΩ) |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; shares pull-up with other I²C devices; supports wire-OR topology |
Key Features
| Feature | Design Value |
|---|---|
| Two-wire Serial Interface | Fully compliant with Philips I²C protocol, enabling simple integration with MCU I²C peripherals and reducing PCB routing complexity |
| Schmitt Trigger Inputs | Input hysteresis on SCL/SDA improves noise immunity in electrically noisy industrial environments (e.g., motor drives, PLCs) |
| 8-byte Page Write Mode | Allows burst programming of up to 8 bytes per transaction, reducing total write time by ~7× vs. individual byte writes |
| Hardware Write Protection | WP pin enables system-level control over EEPROM modification - critical for safeguarding bootloaders or security keys |
| Low Standby Current | 1.6 µA max at 2.7 V - minimizes power draw in battery-backed or always-on IoT edge nodes |
Applications
| Smart Energy Metering | Industrial PLC Configuration |
|---|---|
Use Scenario: Storing tariff tables, meter calibration coefficients, and tamper-event logs in electricity/water/gas meters. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed 100-year data retention and 1M-cycle endurance under frequent field updates. Use Value: Eliminates need for external backup batteries or supercapacitors while maintaining regulatory compliance for metrology data integrity. | Use Scenario: Holding I/O mapping, PID tuning parameters, and firmware update flags in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent configuration store accessed during cold start and runtime reconfiguration via I²C. Use Value: Enables zero-downtime parameter changes and factory reset functionality without requiring firmware reflashing. |
| Automotive Body Control Module | Medical Diagnostic Equipment |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and diagnostic trouble codes (DTCs) in BCMs. IC Role / Device Role / Timing Role: Automotive-grade EEPROM (–40°C to +85°C) with hardware write protection to prevent accidental overwrites during CAN bus activity. Use Value: Meets AEC-Q100 stress test requirements for reliability and supports fail-safe storage of safety-critical user preferences. | Use Scenario: Archiving calibration constants, sensor offset corrections, and usage counters in portable ultrasound or ECG devices. IC Role / Device Role / Timing Role: Low-power (1.6 µA standby) serial EEPROM interfaced directly to ARM Cortex-M MCUs via I²C. Use Value: Extends battery life in handheld diagnostics while ensuring traceability and regulatory audit readiness for FDA/ISO 13485 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02D-SSHM-T | Same 2 Kbit capacity and SOIC-8 package, but rated for 1.7–5.5 V operation and features enhanced ESD protection (4 kV HBM). | Supports lower-voltage microcontrollers (e.g., 1.8 V I/O domains) and harsher ESD environments (e.g., handheld medical tools). | Select when operating below 2.7 V or requiring higher robustness against electrostatic discharge in final assembly. |
| BR24G02-3MNUX | Rohm's 2 Kbit I²C EEPROM in same SOIC-8 package; supports 1.6–5.5 V, 1 MHz max clock, and 4 ms write cycle. | Offers faster write performance and broader voltage range, but lacks A0–A2 address pins - limited to single-device I²C buses. | Choose for simplified layout where only one EEPROM is needed and higher speed or ultra-low-voltage support is prioritized. |
Compared with AT24C02-10PU-2.7, AT24C02D-SSHM-T extends voltage flexibility and ESD resilience, while BR24G02-3MNUX trades device-addressing capability for faster writes and lower minimum supply - guiding selection based on bus topology, voltage margin, and environmental stress requirements.
Availability
AT24C02-10PU-2.7 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, automotive body control modules, and portable medical diagnostics requiring stable component supply across extended product lifecycles.
Supply support for AT24C02-10PU-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 leading provider of microcontrollers, analog components, and memory solutions, serving industrial, automotive, and communications markets with high-reliability silicon.
The AT24C02-10PU-2.7 belongs to Microchip's legacy AT24Cxx serial EEPROM family, designed specifically for cost-sensitive, low-power embedded systems needing trusted nonvolatile storage with minimal footprint and proven field reliability.
FAQ
What is the maximum I²C clock frequency supported by AT24C02-10PU-2.7?
The AT24C02-10PU-2.7 supports up to 400 kHz I²C clock frequency when operated at VCC ≥ 2.7 V. At lower voltages (e.g., 1.8 V), the maximum clock rate drops to 100 kHz. This specification is defined in the AC Characteristics table of the official datasheet and directly affects firmware timing margins and throughput in configuration-heavy applications.
Does AT24C02-10PU-2.7 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C02-10PU-2.7 requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed requirements. Failure to install pull-ups will prevent proper I²C communication and result in bus lockup or NACK responses.
How many devices can share the same I²C bus with AT24C02-10PU-2.7?
Up to eight AT24C02-10PU-2.7 devices can coexist on a single I²C bus using the A0, A1, and A2 address pins to configure unique 3-bit device addresses (0x50–0x57). Each pin must be hard-wired to VCC or GND; floating connections are not permitted and may cause address ambiguity or communication failure.
What is the purpose of the WP pin on AT24C02-10PU-2.7?
The WP (Write Protect) pin on AT24C02-10PU-2.7 provides hardware-level write inhibition. When pulled high to VCC, it disables all write operations-including byte, page, and erase commands-while allowing unrestricted reads. This feature safeguards critical calibration or security data from accidental or malicious overwrite during system operation or firmware updates.
Is AT24C02-10PU-2.7 suitable for automotive applications?
AT24C02-10PU-2.7 is qualified for industrial temperature (–40°C to +85°C) and meets RoHS requirements, but it is not AEC-Q100 qualified. For automotive body electronics where qualification is mandatory, Microchip recommends the AT24C02B variant. Engineers should verify functional equivalence and qualification status before deployment in safety-critical vehicle subsystems.
AT24C02-10PU-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C02-10PU-2.7 FAQ
1.How can I place an order for AT24C02-10PU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02-10PU-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 AT24C02-10PU-2.7 reliable?
The price and inventory of AT24C02-10PU-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 AT24C02-10PU-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C02-10PU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02-10PU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02-10PU-2.7?
AT24C02-10PU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02-10PU-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 AT24C02-10PU-2.7?
For technical support, including AT24C02-10PU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02-10PU-2.7 requirements.
6.How does Aetrix verify that AT24C02-10PU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C02-10PU-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 AT24C02-10PU-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C02-10PU-2.7?
All AT24C02-10PU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02-10PU-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 AT24C02-10PU-2.7 part is unused and in its original packaging.
Return procedure for AT24C02-10PU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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