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Microchip Technology AT24C02A-10TI-1.8-T
- Part No.:
- AT24C02A-10TI-1.8-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT24C02A-10TI-1.8-T.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,876
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Product details
Overview
AT24C02A-10TI-1.8-T from Microchip Technology (formerly Atmel) is a 2 Kbit (256 × 8) two-wire serial EEPROM with 1.8 V to 5.5 V supply operation, 100 kHz clock rate at 1.8 V, 8-byte page write capability, and hardware write protection via the WP pin. It operates across −40°C to +85°C and is packaged in an 8-lead TSSOP for space-constrained industrial control and sensor calibration applications.
For engineers reviewing the AT24C02A-10TI-1.8-T datasheet, AT24C02A-10TI-1.8-T pinout, AT24C02A-10TI-1.8-T application, or AT24C02A-10TI-1.8-T equivalent, this device delivers low-voltage nonvolatile storage with Schmitt-trigger inputs, noise-suppressed I²C interface, and automotive-grade reliability-key for embedded systems requiring robust parameter retention under brownout conditions.
Technical Context
The AT24C02A-10TI-1.8-T 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, with automatic word-address rollover within pages.
Write protection is enforced by the WP pin: tied to VCC, it locks the upper half (1K-bit) array; tied to GND, full read/write access is enabled. The device uses internally timed 5 ms max write cycles and supports acknowledge polling to detect write completion without fixed delays.
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 | 1.8 V to 5.5 V - enables direct interfacing with 1.8 V logic and mixed-voltage systems |
| I²C Clock Rate | 100 kHz at 1.8 V - ensures reliable timing margin under low-VCC conditions |
| Page Write Capacity | 8-byte page writes - reduces bus transactions vs. byte writes, improving firmware update efficiency |
| Endurance & Retention | 1 million write cycles / 100 years data retention - validated for long-life field deployments |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood environments |
| Input Capacitance | ≤6 pF on A0–A2/SCL, ≤8 pF on SDA - minimizes signal integrity impact on high-speed I²C buses |
Pinout & Package
AT24C02A-10TI-1.8-T is housed in an 8-lead TSSOP (8A2) package: 4.4 mm body width, 0.65 mm lead pitch, gull-wing leads, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired address bits enabling up to eight AT24C02A devices on one I²C bus |
| SDA | Serial Data Line | Open-drain bidirectional I²C data line; requires external pull-up resistor |
| SCL | Serial Clock Input | Positive-edge clock input for data latching; drives internal state machine timing |
| WP | Write Protect Control | Hardware-enforced lock for upper 1K-bit memory segment when pulled high |
| VCC | Power Supply | 1.8 V to 5.5 V main supply; powers EEPROM core and interface circuitry |
| GND | Ground Reference | System return path for all internal circuits and I/O pins |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 1.8 V supply - eliminates level-shifting in battery-powered or ultra-low-power nodes |
| Schmitt-trigger inputs | On SCL/SDA/A0–A2 - rejects noise spikes up to 100 ns, enhancing bus reliability in EMI-prone environments |
| Partial page writes | Allows writing fewer than 8 bytes per page - avoids overwriting valid data during partial configuration updates |
| Self-timed write cycle | Max 5 ms internal erase/write - removes need for software delay loops; status verified via ACK polling |
| Automotive-grade qualification | −40°C to +85°C extended temp range + lead-free/halogen-free packaging - meets AEC-Q200 stress requirements |
Applications
| Industrial Sensor Calibration | Smart Meter Parameter Storage |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and temperature compensation tables in pressure or humidity sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent sensor characterization data accessed at power-up. Use Value: Enables single-point calibration during manufacturing and eliminates recalibration drift over 100-year data retention life. |
Use Scenario: Retaining tariff schedules, billing counters, and communication module credentials in electricity/water meters. IC Role / Device Role / Timing Role: Secure, low-power parameter vault accessed only during meter initialization or firmware updates. Use Value: Withstands 1M write cycles and operates reliably at 1.8 V during battery backup mode during mains failure. |
| Automotive Body Control Module | IoT Edge Node Configuration |
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock settings in vehicle BCMs. IC Role / Device Role / Timing Role: I²C-configurable memory mapped into microcontroller's peripheral address space for runtime read/write. Use Value: WP pin hardware lock prevents accidental overwrites during CAN/LIN firmware updates or ECU reprogramming. |
Use Scenario: Storing Wi-Fi SSID/password, OTA update keys, and device-specific identifiers in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Low-quiescent-current (0.6 µA standby at 1.8 V) nonvolatile storage for secure credential management. Use Value: Extends coin-cell battery life beyond 10 years while maintaining cryptographic key integrity across power cycles. |
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 2K capacity, 1.7–5.5 V range, but uses 8-lead SOIC (8S1) package and lacks WP pin | No hardware write protection; requires software-based lock mechanisms | Select when board layout already uses SOIC footprint and WP functionality is managed externally |
| M24C02-RMN6TP | 2K I²C EEPROM from STMicroelectronics; 1.8–5.5 V, 400 kHz max clock, 8-lead TSSOP, WP pin included | Higher clock rate (400 kHz) at ≥2.5 V, but 100 kHz guaranteed only down to 2.5 V-not 1.8 V | Choose when system operates ≥2.5 V and faster write throughput is prioritized over 1.8 V compatibility |
Compared with AT24C02A-10TI-1.8-T, AT24C02D-SSHM-T sacrifices hardware write protection for broader voltage tolerance and SOIC compatibility, while M24C02-RMN6TP trades guaranteed 1.8 V operation for higher speed above 2.5 V-making AT24C02A-10TI-1.8-T uniquely suited for true 1.8 V–only or mixed-voltage brownout-resilient designs.
Availability
AT24C02A-10TI-1.8-T is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter parameter storage, and automotive body control modules requiring stable component supply across extended temperature and low-voltage operating conditions.
Supply support for AT24C02A-10TI-1.8-T 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, FPGA, and memory solutions, with a focus on reliability, longevity, and embedded system integration.
The AT24C02A belongs to Microchip's serial EEPROM product line, designed specifically for low-power, low-voltage nonvolatile data storage in industrial, automotive, and IoT edge applications where robustness and long-term data integrity are critical.
FAQ
What is the minimum supply voltage required for reliable operation of the AT24C02A-10TI-1.8-T?
The AT24C02A-10TI-1.8-T is specified for reliable operation from 1.8 V to 5.5 V. At 1.8 V, it supports 100 kHz I²C clocking, 0.6 µA standby current, and full read/write functionality-including page writes and WP pin control. Operation below 1.8 V is not characterized or guaranteed.
Does the AT24C02A-10TI-1.8-T support I²C fast-mode (400 kHz) operation?
No-the AT24C02A-10TI-1.8-T supports 100 kHz maximum clock frequency when operated at 1.8 V. Fast-mode (400 kHz) is only guaranteed for versions rated for 2.5 V, 2.7 V, or 5 V operation (e.g., AT24C02A-10TI-2.7-T). Using 400 kHz at 1.8 V violates AC timing specifications and may cause communication failures.
How does the WP pin function on the AT24C02A-10TI-1.8-T?
When the WP pin is tied to VCC, the upper half (1024 bits) of the AT24C02A-10TI-1.8-T's memory array is write-protected; only the lower half remains writable. When WP is tied to GND, full read/write access is enabled. This hardware lock operates independently of I²C commands and persists across power cycles.
Can the AT24C02A-10TI-1.8-T be used in automotive applications?
Yes-the AT24C02A-10TI-1.8-T is explicitly qualified for automotive-grade use: it meets −40°C to +85°C extended temperature range, is lead-free/halogen-free, and carries industrial/automotive reliability certifications. However, it is not AEC-Q200 qualified out-of-box; system-level validation is required for safety-critical functions.
What package type is used for the AT24C02A-10TI-1.8-T?
The AT24C02A-10TI-1.8-T uses an 8-lead TSSOP (Thin Shrink Small Outline Package), designated as 8A2 per Microchip's ordering guide. It measures 4.4 mm × 3.0 mm with 0.65 mm lead pitch, gull-wing leads, and is RoHS-compliant and halogen-free.
AT24C02A-10TI-1.8-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT24C02A-10TI-1.8-T FAQ
1.How can I place an order for AT24C02A-10TI-1.8-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02A-10TI-1.8-T 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 AT24C02A-10TI-1.8-T reliable?
The price and inventory of AT24C02A-10TI-1.8-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02A-10TI-1.8-T is usually 5 days.
3.What payment methods are accepted for AT24C02A-10TI-1.8-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02A-10TI-1.8-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02A-10TI-1.8-T?
AT24C02A-10TI-1.8-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02A-10TI-1.8-T 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 AT24C02A-10TI-1.8-T?
For technical support, including AT24C02A-10TI-1.8-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02A-10TI-1.8-T requirements.
6.How does Aetrix verify that AT24C02A-10TI-1.8-T is sourced from the original manufacturer or authorized distributors?
All AT24C02A-10TI-1.8-T 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 AT24C02A-10TI-1.8-T meets industry standards.
7.What is the process for return or replacement of AT24C02A-10TI-1.8-T?
All AT24C02A-10TI-1.8-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02A-10TI-1.8-T, 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 AT24C02A-10TI-1.8-T part is unused and in its original packaging.
Return procedure for AT24C02A-10TI-1.8-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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