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Microchip Technology AT24C02AN-10SU-2.7
- Part No.:
- AT24C02AN-10SU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C02AN-10SU-2.7.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,087
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Product details
Overview
AT24C02AN-10SU-2.7 from Microchip Technology (formerly Atmel) is a 2 Kbit (256 × 8) two-wire serial EEPROM with hardware write protection, optimized for low-voltage industrial systems. It operates from 2.7V to 5.5V, supports 400 kHz I²C clock rate at 2.7V+, delivers 1 million write cycles endurance, and retains data for 100 years - used in embedded sensor calibration storage and power-management configuration memory.
For engineers reviewing the AT24C02AN-10SU-2.7 datasheet, AT24C02AN-10SU-2.7 pinout, AT24C02AN-10SU-2.7 application, or AT24C02AN-10SU-2.7 equivalent, key selection factors include its 8-lead SOIC package, WP pin-based hardware write protection, 8-byte page write capability, Schmitt-triggered noise-immune inputs, and automotive-grade −40°C to +85°C temperature range compliance.
Technical Context
The AT24C02AN-10SU-2.7 implements a standard I²C-compatible two-wire interface with SDA as open-drain bidirectional data line and SCL as edge-triggered clock input. Its internal address counter supports current-address, random-address, and sequential read modes, while page-write logic enables up to eight bytes per transaction with automatic word-address increment within the same 8-byte page boundary.
Hardware write protection is enforced via the WP pin: tied to VCC, it locks the upper 1K-bit array; tied to GND, full read/write access is enabled. The device uses Schmitt-trigger inputs and digital noise filtering on SDA/SCL to ensure robust operation in electrically noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 words × 8 bits), organized as 32 pages of 8 bytes each |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration into 3.3V and 5V microcontroller systems without level-shifting |
| I²C Clock Frequency | Up to 400 kHz at ≥2.7V - supports high-speed configuration updates in real-time control loops |
| Write Cycle Time | Max 5 ms - defines minimum interval between successive write commands; impacts firmware polling strategy |
| Endurance & Retention | 1 million write cycles / 100-year data retention - suitable for field-updatable calibration tables in deployed equipment |
| Operating Temperature | −40°C to +85°C - certified for industrial and automotive under-hood applications |
| Input Noise Immunity | Schmitt-trigger + filtered inputs - rejects >100 ns glitches on SDA/SCL, reducing bus arbitration errors |
Pinout & Package
AT24C02AN-10SU-2.7 is supplied in an 8-lead JEDEC SOIC (8S1) package: 0.150" wide, gull-wing leads, RoHS-compliant green body. Dimensions: 4.80–5.00 mm length × 3.81–3.99 mm width × 1.35–1.75 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Hardwired device address inputs | Enable up to eight AT24C02AN-10SU-2.7 devices on one I²C bus; A0–A2 set slave address bits 1–3 |
| SDA | Serial data bidirectional I/O | Open-drain line requiring external pull-up; shares bus with other I²C peripherals; supports multi-master arbitration |
| SCL | Serial clock input | Positive-edge sampled for data-in; negative-edge sampled for data-out; clock stretching supported during write cycles |
| WP | Hardware write protect control | Active-high signal: VCC = upper-half array locked; GND = full read/write access - no software overhead required |
| VCC | Power supply input | Accepts 2.7–5.5V; internal voltage regulation ensures stable core operation across rail variation |
| GND | Ground reference | Return path for all I/O and internal circuitry; must be low-impedance to maintain noise margin on SDA/SCL |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin disables writes to upper 1K-bit memory segment when pulled high - eliminates risk of accidental firmware corruption |
| Low-Voltage Operation | Guaranteed functionality down to 2.7V - enables use in brown-out conditions and battery-backed systems |
| Noise-Resistant Interface | Schmitt-trigger inputs + digital filtering suppress >100 ns transients - improves I²C reliability in motor-drive or switching-power environments |
| Page Write Capability | 8-byte atomic page writes reduce I²C transaction count by 8× vs. byte writes - accelerates bulk parameter storage |
| Extended Data Retention | 100-year retention at +85°C - ensures calibration data integrity over full product lifecycle without refresh |
Applications
| Industrial Sensor Calibration | Power Supply Configuration Storage |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in PLC modules. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during system boot and runtime recalibration. Use Value: Enables field-replaceable sensor modules without reprogramming host MCU firmware - reduces service downtime. |
Use Scenario: Holding user-defined output voltage/current limits and protection thresholds in programmable DC power supplies. IC Role / Device Role / Timing Role: Persistent settings store updated parameters after front-panel or remote interface changes. Use Value: Survives AC power loss and cold restarts - maintains safety-critical operating boundaries without host intervention. |
| Automotive Body Control Unit | Medical Device Usage Logs |
Use Scenario: Recording door lock actuation history and mirror position presets in vehicle BCMs. IC Role / Device Role / Timing Role: Event-logging memory with WP-enabled protection against unintended overwrites during CAN bus activity. Use Value: Meets AEC-Q100 Grade 2 requirements and withstands automotive thermal cycling - supports warranty diagnostics. |
Use Scenario: Archiving sterilization cycle counts and operator login timestamps in portable infusion pumps. IC Role / Device Role / Timing Role: Tamper-resistant audit trail storage with hardware write-lock during normal operation. Use Value: Provides FDA 21 CFR Part 11-compliant data integrity - no software encryption overhead required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M24C02-RMN6TP | 2 Kbit, 1.7–5.5V supply, 400 kHz I²C, SOIC-8 package; no dedicated WP pin - uses software-controlled write enable | Lacks hardware write protection; requires firmware coordination to prevent concurrent writes | Choose when cost sensitivity outweighs need for fail-safe write blocking in unattended systems |
| BR24G02NUX-10 | 2 Kbit, 1.6–5.5V, 400 kHz I²C, TSSOP-8; includes WP pin but supports only 100 kHz at 1.8V (vs. 400 kHz at 2.7V+ for AT24C02AN-10SU-2.7) | Lower max clock speed at low voltage; different pinout (WP on pin 7 vs. pin 6) - not drop-in compatible | Prefer when board space constraints favor TSSOP and full-speed operation above 2.7V is not required |
Compared with M24C02-RMN6TP and BR24G02NUX-10, the AT24C02AN-10SU-2.7 provides guaranteed 400 kHz operation at 2.7V+, hardware-enforced write protection on a dedicated pin, and automotive-grade temperature validation - making it optimal for safety-critical or high-throughput industrial configurations.
Availability
AT24C02AN-10SU-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, power supply configuration storage, and automotive body control unit designs requiring stable component supply across extended product lifecycles.
Supply support for AT24C02AN-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 global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with broad industrial and automotive qualification expertise.
The AT24C02AN-10SU-2.7 belongs to Microchip's legacy AT24CxxA serial EEPROM family, designed specifically for reliable, low-power, pin-efficient configuration and calibration storage in space-constrained embedded systems.
FAQ
What is the maximum I²C clock frequency supported by the AT24C02AN-10SU-2.7?
The AT24C02AN-10SU-2.7 supports up to 400 kHz I²C clock frequency when operated at VCC ≥ 2.7V. At lower voltages (e.g., 1.8V), the maximum clock rate drops to 100 kHz. This dual-speed capability allows flexible integration across 3.3V and 5V systems while maintaining timing compliance per I²C specification.
How does the WP pin function on the AT24C02AN-10SU-2.7?
On the AT24C02AN-10SU-2.7, the WP (Write Protect) pin is active-high: when tied to VCC, it locks the upper 1K-bit memory segment (addresses 0x100–0x1FF); when grounded, full read/write access is enabled. This hardware-level protection requires no firmware interaction and prevents accidental overwrites during system resets or noise events.
What package type is used for the AT24C02AN-10SU-2.7?
The AT24C02AN-10SU-2.7 uses an 8-lead JEDEC SOIC (8S1) package - 0.150" wide, gull-wing leads, RoHS-compliant green body. Its dimensions are 4.80–5.00 mm × 3.81–3.99 mm × 1.35–1.75 mm, making it compatible with standard SOIC footprints and automated assembly processes.
Can the AT24C02AN-10SU-2.7 operate reliably at 3.3V?
Yes, the AT24C02AN-10SU-2.7 is fully specified for operation at 3.3V, which falls within its 2.7V–5.5V supply range. At 3.3V, it supports 400 kHz I²C communication, draws ≤3.0 mA during write operations, and maintains full functionality across −40°C to +85°C - ideal for modern 3.3V microcontroller interfaces.
What is the endurance rating of the AT24C02AN-10SU-2.7?
The AT24C02AN-10SU-2.7 guarantees 1 million write/erase cycles per memory location, validated at 5.0V and 25°C in page mode. This endurance enables frequent updates in applications like dynamic calibration storage or usage logging without premature wear-out concerns.
AT24C02AN-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:
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C02AN-10SU-2.7 FAQ
1.How can I place an order for AT24C02AN-10SU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02AN-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 AT24C02AN-10SU-2.7 reliable?
The price and inventory of AT24C02AN-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 AT24C02AN-10SU-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C02AN-10SU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02AN-10SU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02AN-10SU-2.7?
AT24C02AN-10SU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02AN-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 AT24C02AN-10SU-2.7?
For technical support, including AT24C02AN-10SU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02AN-10SU-2.7 requirements.
6.How does Aetrix verify that AT24C02AN-10SU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C02AN-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 AT24C02AN-10SU-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C02AN-10SU-2.7?
All AT24C02AN-10SU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02AN-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 AT24C02AN-10SU-2.7 part is unused and in its original packaging.
Return procedure for AT24C02AN-10SU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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