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Microchip Technology AT24C02AN-10SI-2.5
- Part No.:
- AT24C02AN-10SI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C02AN-10SI-2.5.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,606
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Product details
Overview
AT24C02AN-10SI-2.5 from Microchip Technology (formerly Atmel) is a 2K-bit (256 × 8) I²C-compatible serial EEPROM with hardware write protection, low-voltage operation (2.5V to 5.5V), and industrial temperature range (−40°C to +85°C). It supports 100 kHz I²C communication, 8-byte page writes, and delivers 1 million write cycles with 100-year data retention - used in embedded system configuration storage, sensor calibration data logging, and power-management parameter backup.
For engineers reviewing the AT24C02AN-10SI-2.5 datasheet, AT24C02AN-10SI-2.5 pinout, AT24C02AN-10SI-2.5 application, or AT24C02AN-10SI-2.5 equivalent, key selection considerations include its 2.5V minimum supply, industrial-grade temperature rating, 8-pin SOIC package, WP pin-based hardware write protection, and compatibility with microcontroller I²C peripherals requiring robust nonvolatile memory at low operating voltage.
Technical Context
The AT24C02AN-10SI-2.5 implements a standard two-wire I²C interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. Its internal 256-word × 8-bit array uses 8-bit word addressing and supports both byte and 8-byte page write modes with self-timed 10 ms max write cycles.
Device addressing uses hardwired A0–A2 pins to support up to eight devices on one bus; the WP pin enables hardware-level write protection of the full memory array when pulled high. It operates across VCC = 2.5V to 5.5V and meets industrial temperature requirements without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8 bits) - provides sufficient space for firmware flags, calibration coefficients, or device ID storage in resource-constrained systems. |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interfacing with 2.5V, 3.3V, and 5V logic domains without level shifting. |
| I²C Clock Frequency | 100 kHz (at 2.5V) - ensures reliable timing margin under low-voltage conditions while maintaining compatibility with legacy I²C controllers. |
| Write Cycle Time | 10 ms maximum - defines worst-case delay before next command; requires polling or timeout handling in host firmware. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - supports long-life industrial deployments with frequent parameter updates. |
| Operating Temperature | −40°C to +85°C - certified for use in automotive body control modules, industrial PLCs, and outdoor metering equipment. |
| ESD Protection | >3000V HBM - reduces risk of field failure during handling or in electrically noisy environments. |
Pinout & Package
AT24C02AN-10SI-2.5 is housed in an 8-pin JEDEC SOIC (8S1) package measuring 4.9 mm × 3.9 mm × 1.75 mm, with gull-wing leads and standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired address bit enabling up to eight AT24C02A devices on one I²C bus; tied high/low to set LSB of 7-bit slave address. |
| A1 | Device Address Input | Second address bit; combined with A0 and A2, selects one of eight possible I²C addresses (0x50–0x57). |
| A2 | Device Address Input | MSB of device address; all three address pins (A2–A0) are used exclusively for AT24C02A variant addressing. |
| GND | Ground Reference | Return path for VCC and I/O signals; must be low-impedance to ensure stable I²C signaling and noise immunity. |
| VCC | Power Supply | Primary supply input supporting 2.5V–5.5V operation; decoupling capacitor (0.1 µF) required near pin for transient suppression. |
| WP | Write Protect Control | Hardware-enabled lock: driven high to protect entire memory array from accidental writes; driven low for normal read/write access. |
| SCL | Serial Clock Input | Master-generated clock signal with Schmitt-trigger input; determines I²C timing and synchronizes data transfer on SDA. |
| SDA | Serial Data I/O | Open-drain bidirectional line shared across I²C bus; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin disables all write operations when pulled high - eliminates software-only vulnerabilities in safety-critical or field-upgrade scenarios. |
| Low-Voltage Operation | Functional down to 2.5V VCC - allows direct integration into battery-powered or energy-harvesting systems without voltage boosting. |
| Noise-Immune I²C Interface | Schmitt-trigger inputs on SCL and filtered SDA - suppresses EMI-induced glitches in motor drives, power supplies, or industrial enclosures. |
| Page Write Capability | 8-byte page writes reduce I²C transaction overhead by 87% vs. individual byte writes - accelerates bulk configuration updates. |
| Industrial Temperature Rating | Validated operation from −40°C to +85°C - ensures reliability in uncontrolled ambient environments like factory floors or vehicle cabins. |
Applications
| Smart Energy Metering | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-logging memory interfaced via microcontroller I²C peripheral. Use Value: Guarantees data integrity across power cycles and brownouts; WP pin prevents corruption during firmware updates or grid transients. | Use Scenario: Retaining module identification, channel scaling factors, and fault history in modular programmable logic controller backplanes. IC Role / Device Role / Timing Role: Persistent parameter storage accessed during boot and runtime diagnostics over isolated I²C bus. Use Value: Enables hot-swap reconfiguration without recalibration; 1M endurance supports decades of maintenance cycles in 24/7 automation lines. |
| Automotive Body Control Units | Medical Diagnostic Handhelds |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door-lock configurations in 12V vehicle subsystems with local 3.3V regulation. IC Role / Device Role / Timing Role: Low-power I²C EEPROM co-located with MCU in BCM subassembly. Use Value: −40°C to +85°C rating matches under-hood thermal envelope; 2.5V min VCC accommodates degraded supply during cranking. | Use Scenario: Storing user preferences, calibration offsets, and regulatory compliance timestamps in portable ultrasound or glucose monitors. IC Role / Device Role / Timing Role: Secure, low-energy configuration memory accessed during startup and settings changes. Use Value: >3000V HBM ESD rating protects against handling damage in clinical environments; WP pin prevents accidental overwrite of FDA-mandated calibration data. |
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 | STMicroelectronics 2K I²C EEPROM; 1.7V–5.5V supply; 400 kHz max speed at 5V; 8-pin SOIC package; no dedicated WP pin (write protection via software address locking). | Lacks hardware WP - unsuitable where physical write disable is mandated (e.g., ISO 26262 ASIL-B systems). | Select when higher-speed 400 kHz operation at 5V is prioritized and software-controlled protection suffices. |
| BR24G02NUX-10 | Rohm 2K I²C EEPROM; 1.6V–5.5V supply; 1 MHz max speed; 8-pin USON package (2.0 × 2.5 mm); built-in WP pin; supports 1.6V operation. | Smaller USON footprint and lower VCC min - advantageous for space-constrained portable designs but incompatible with SOIC PCB layout. | Select when board area is critical and 1.6V operation or 1 MHz speed is needed; requires PCB redesign. |
Compared with M24C02-RMN6TP and BR24G02NUX-10, the AT24C02AN-10SI-2.5 uniquely combines industrial temperature rating, hardware WP, 8-pin SOIC compatibility, and guaranteed 100 kHz operation at 2.5V - making it optimal for legacy-replacement and ruggedized embedded designs where pinout and protection architecture are fixed requirements.
Availability
AT24C02AN-10SI-2.5 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, automotive body control units, and medical handhelds requiring stable component supply across extended product lifecycles.
Supply support for AT24C02AN-10SI-2.5 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 memory solutions, with a focus on embedded control and connectivity.
The AT24C02A series belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power, I²C-based nonvolatile data storage in industrial, automotive, and consumer applications demanding long-term data integrity.
FAQ
What is the minimum supply voltage required for reliable operation of the AT24C02AN-10SI-2.5?
The AT24C02AN-10SI-2.5 is rated for operation from 2.5V to 5.5V. Its guaranteed functionality - including 100 kHz I²C communication, write cycle completion, and data retention - begins at exactly 2.5V. Below this threshold, timing margins degrade and write failures may occur; therefore, system design must ensure VCC remains ≥2.5V during all active and standby states. The AT24C02AN-10SI-2.5 datasheet specifies DC and AC parameters only within this validated range.
Does the AT24C02AN-10SI-2.5 support page write operations, and what is the page size?
Yes, the AT24C02AN-10SI-2.5 supports page write mode with an 8-byte page size. This allows up to eight sequential bytes to be written in a single I²C transaction, significantly reducing bus overhead compared to individual byte writes. The internal address pointer auto-increments within the page boundary; crossing the page edge causes wraparound to the start of the same page. This behavior is inherent to the AT24C02AN-10SI-2.5's 256-word organization and is fully compliant with standard I²C EEPROM protocols.
How does the Write Protect (WP) pin function on the AT24C02AN-10SI-2.5?
On the AT24C02AN-10SI-2.5, the WP pin provides hardware-level write inhibition: when pulled high (to VCC), it disables all write operations - including byte, page, and erase commands - across the entire 2K memory array. When grounded, full read/write capability is restored. This feature operates independently of software commands and persists through power cycles, making the AT24C02AN-10SI-2.5 suitable for applications requiring fail-safe data protection against firmware bugs or malicious writes.
What package type and dimensions does the AT24C02AN-10SI-2.5 use?
The AT24C02AN-10SI-2.5 uses an 8-pin JEDEC-standard SOIC package (designated 8S1), measuring 4.90 mm × 3.90 mm × 1.75 mm with 1.27 mm lead pitch. Its gull-wing leads are compatible with standard reflow and wave soldering processes. This package is identical to that used across the AT24C02A family and ensures drop-in replacement capability where board layout and thermal constraints match the 8S1 footprint specified in the AT24C02AN-10SI-2.5 datasheet.
Is the AT24C02AN-10SI-2.5 qualified for industrial temperature operation, and what is the exact range?
Yes, the AT24C02AN-10SI-2.5 is explicitly qualified for industrial temperature operation over −40°C to +85°C. This rating is confirmed in the "Ordering Information" table of the official datasheet, where the "-10SI" suffix denotes the industrial-grade version with extended thermal validation. All electrical specifications - including I²C timing, write endurance, and standby current - are guaranteed across this full range, making the AT24C02AN-10SI-2.5 appropriate for deployment in factory automation, outdoor infrastructure, and other thermally demanding environments.
AT24C02AN-10SI-2.5 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C02AN-10SI-2.5 FAQ
1.How can I place an order for AT24C02AN-10SI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02AN-10SI-2.5 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-10SI-2.5 reliable?
The price and inventory of AT24C02AN-10SI-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02AN-10SI-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C02AN-10SI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02AN-10SI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02AN-10SI-2.5?
AT24C02AN-10SI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02AN-10SI-2.5 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-10SI-2.5?
For technical support, including AT24C02AN-10SI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02AN-10SI-2.5 requirements.
6.How does Aetrix verify that AT24C02AN-10SI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C02AN-10SI-2.5 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-10SI-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C02AN-10SI-2.5?
All AT24C02AN-10SI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02AN-10SI-2.5, 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-10SI-2.5 part is unused and in its original packaging.
Return procedure for AT24C02AN-10SI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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