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Microchip Technology AT24C02C-STPD-TVAO
- Part No.:
- AT24C02C-STPD-TVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
AT24C02C-STPD-TVAO.pdf
- Description:
- IC EEPROM 2KBIT I2C TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,521
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Product details
Overview
AT24C02C-STPD-TVAO from Microchip Technology (formerly Atmel) is a 2-kilobit (256 × 8) automotive-grade serial EEPROM with I²C-compatible 2-wire interface, 1.7V–5.5V supply range, -40°C to +125°C Grade 1 operation, and hardware write protection via WP pin. It delivers 1,000,000 write cycles and 100-year data retention for infotainment configuration storage in engine control units.
For engineers reviewing the AT24C02C-STPD-TVAO datasheet, AT24C02C-STPD-TVAO pinout, AT24C02C-STPD-TVAO application, or AT24C02C-STPD-TVAO equivalent, key selection criteria include Grade 1 AEC-Q100 qualification, 8-byte page write capability, Schmitt-trigger inputs for noise immunity in vehicle harness environments, and JEDEC SOIC-8 packaging compatibility with legacy PCB layouts.
Technical Context
The AT24C02C-STPD-TVAO implements a synchronous serial protocol using open-drain SDA/SCL lines with built-in Schmitt-trigger inputs and noise filtering. Its internal address counter supports current-address, random-address, and sequential read modes, while the 8-byte page write buffer enables burst writes without host-side address management overhead.
Write protection is enforced at the hardware level: WP = VCC locks the full memory array, while WP = GND permits standard read/write operations. The device enters low-power standby mode after Stop condition receipt or power-up, drawing ≤4.0 μA at 5.0V - critical for always-on automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2,048 bits (256 words × 8 bits), organized as 32 pages of 8 bytes each |
| Interface | I²C-compatible 2-wire serial bus, supports 400 kHz clock at 2.5V |
| Supply voltage | 1.7V to 5.5V - enables direct connection to 1.8V, 3.3V, or 5V microcontroller I/O rails |
| Operating temperature | -40°C to +125°C (AEC-Q100 Grade 1), qualified for under-hood ECU use |
| Endurance & retention | 1,000,000 write cycles; 100 years data retention at 125°C - meets ASAM MCD-2 MC requirements |
| Write cycle time | Max 5 ms self-timed internal write - eliminates need for external polling delay in firmware |
| Input capacitance | 6 pF on A0/A1/A2/SCL pins; 8 pF on SDA - ensures signal integrity on long PCB traces |
Pinout & Package
AT24C02C-STPD-TVAO is supplied in an 8-lead JEDEC SOIC package (package code "SS", drawing 8S1), 0.150" wide body, RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device address input | Hardwired LSB of 3-bit device address; enables up to eight AT24C02C devices on one I²C bus |
| A1 | Device address input | Mid-bit of device address; used with A0 and A2 to configure unique 7-bit slave address (1010xxxR/W) |
| A2 | Device address input | MSB of device address; all three pins (A2–A0) are active for AT24C02C (unlike AT24C04C/08C) |
| GND | Ground reference | Return path for VCC and all I/O; must be low-impedance to suppress ground bounce in noisy automotive environments |
| VCC | Power supply | Accepts 1.7–5.5V; internal POR circuit ensures reliable initialization during battery transients |
| WP | Hardware write protect | Active-high pin: tied to VCC to lock entire memory array against accidental writes during ECU boot or reset |
| SCL | Serial clock input | Positive-edge sampled clock; requires external pull-up; supports 400 kHz max frequency with 600 ns high-time minimum |
| SDA | Serial data bidirectional | Open-drain I/O shared across multiple devices; requires external pull-up; features Schmitt-trigger input for robust noise rejection |
Key Features
| Feature | Design Value |
|---|---|
| Grade 1 AEC-Q100 qualification | Validated for -40°C to +125°C operation with extended reliability testing - suitable for powertrain and ADAS modules |
| 8-byte page write mode | Enables efficient firmware parameter updates without byte-by-byte addressing overhead - reduces I²C transaction count by up to 8× |
| Partial page write support | Allows writing fewer than 8 bytes within a page boundary without corrupting adjacent data - simplifies non-aligned configuration saves |
| Self-timed 5 ms write cycle | Eliminates need for fixed firmware delays; ACK polling provides deterministic completion detection |
| Schmitt-trigger filtered inputs | Rejects EMI-induced glitches on SCL/SDA lines in 12V/24V vehicle electrical systems - improves bus stability during load dump events |
Applications
| Instrument Cluster Calibration Storage | Body Control Module (BCM) Configuration |
|---|---|
Use Scenario: Storing odometer values, trip counters, and display brightness calibration across ignition cycles in digital instrument clusters. IC Role / Device Role / Timing Role: Nonvolatile parameter store interfaced directly to cluster MCU via I²C; retains data during battery disconnect. Use Value: Guarantees accurate mileage logging and user preference persistence over 100+ years - exceeds vehicle lifetime requirements per ISO 26262 ASIL-B. | Use Scenario: Holding door lock logic states, window auto-up/down thresholds, and mirror position presets in BCMs. IC Role / Device Role / Timing Role: Dedicated EEPROM for safety-critical configuration data; isolated from main MCU flash to prevent corruption during OTA updates. Use Value: Enables field-upgradable feature sets without reprogramming MCU firmware - reduces service center visits and warranty claims. |
| Engine Control Unit (ECU) Trim Data | Advanced Driver Assistance Systems (ADAS) Sensor Offset |
Use Scenario: Saving fuel injection timing trims, idle air control adjustments, and knock sensor compensation maps after adaptive learning. IC Role / Device Role / Timing Role: High-reliability storage for real-time calibration coefficients updated during closed-loop engine operation. Use Value: Supports >1M write cycles - accommodates daily adaptive learning over 10+ years of vehicle service life. | Use Scenario: Storing camera/lidar mounting offset corrections derived during factory calibration or dealer alignment procedures. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for ADAS sensor alignment parameters - accessed only during diagnostic sessions. Use Value: WP pin hardware lock prevents accidental overwrite during CAN-based diagnostics - maintains functional safety integrity per ISO 26262 ASIL-A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics M24C02-RMN6TP | Same 2K density, I²C interface, SOIC-8 package; AEC-Q100 Grade 2 (-40°C to +105°C); 1.7V–5.5V supply | Limited to under-dash modules (e.g., HVAC control) due to lower max operating temperature | Select when cost sensitivity outweighs under-hood thermal requirements and Grade 1 qualification is not mandated. |
| ON Semiconductor CAT24C02HU4IGT3 | 2K I²C EEPROM in UDFN-8 (2mm × 3mm); AEC-Q100 Grade 1; 1.7V–5.5V; no WP pin | Requires software-based write protection; smaller footprint suits space-constrained ADAS camera modules | Choose for PCB area optimization where hardware WP is managed externally or unnecessary. |
Compared with M24C02-RMN6TP and CAT24C02HU4IGT3, AT24C02C-STPD-TVAO uniquely combines Grade 1 thermal rating, dedicated WP pin, and JEDEC SOIC-8 compatibility - making it the preferred choice for mission-critical powertrain and chassis control applications requiring drop-in replacement assurance.
Availability
AT24C02C-STPD-TVAO is available at Aetrix Electronics and suitable for engine control units, instrument clusters, body control modules, and ADAS sensor calibration systems requiring stable component supply across automotive production lifecycles.
Supply support for AT24C02C-STPD-TVAO 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 acquired Atmel in 2016 and maintains full product continuity, qualification, and support for the AT24CxxC automotive EEPROM family.
The AT24C02C belongs to Microchip's AEC-Q100-qualified serial EEPROM product line, engineered specifically for automotive subsystems demanding high endurance, extended temperature operation, and hardware-level data integrity protection.
FAQ
What is the maximum I²C clock frequency supported by AT24C02C-STPD-TVAO?
The AT24C02C-STPD-TVAO supports up to 400 kHz I²C clock frequency at VCC = 2.5V. At higher supply voltages (e.g., 3.3V or 5.0V), timing margins improve but the device remains compliant with Fast-mode I²C specifications. The minimum tHIGH and tLOW requirements (600 ns and 1200 ns respectively) ensure reliable communication even in electrically noisy automotive environments where signal edge degradation may occur.
Does AT24C02C-STPD-TVAO require external pull-up resistors on SDA and SCL lines?
Yes, AT24C02C-STPD-TVAO requires external pull-up resistors on both SDA and SCL lines because its I/O structure uses open-drain outputs. Typical values are 1.3 kΩ for 2.5V/5.5V operation and 10 kΩ for 1.7V operation, as specified in the AC characteristics table. These values ensure proper rise times (<300 ns) and noise margin compliance per I²C bus standards in automotive wiring harnesses.
How does the Write Protect (WP) pin function on AT24C02C-STPD-TVAO?
On AT24C02C-STPD-TVAO, the WP pin is active-high: when pulled to VCC, it disables all write operations to the entire memory array, preserving stored data during power-up sequences or system resets. When grounded, normal read/write access is enabled. This hardware-level protection operates independently of I²C commands and cannot be overridden by software - a critical feature for safeguarding calibration data in safety-critical ECUs.
Can AT24C02C-STPD-TVAO be used in 1.8V systems?
Yes, AT24C02C-STPD-TVAO is fully compatible with 1.8V systems because its minimum operating voltage is 1.7V (Grade 2/3 specification). DC characteristics including VOL, VOH, and input thresholds are validated down to 1.7V, and AC timing parameters remain within spec at 1.8V. This makes AT24C02C-STPD-TVAO suitable for modern low-voltage microcontrollers used in next-generation automotive domain controllers.
What is the page write size for AT24C02C-STPD-TVAO?
The AT24C02C-STPD-TVAO supports an 8-byte page write size, meaning up to eight consecutive bytes can be written in a single I²C transaction without retransmitting the starting address. This capability reduces bus overhead and accelerates bulk configuration updates - for example, saving a complete set of 8 trim values in one atomic operation instead of eight separate byte writes.
AT24C02C-STPD-TVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 450 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
AT24C02C-STPD-TVAO FAQ
1.How can I place an order for AT24C02C-STPD-TVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02C-STPD-TVAO 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 AT24C02C-STPD-TVAO reliable?
The price and inventory of AT24C02C-STPD-TVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02C-STPD-TVAO is usually 5 days.
3.What payment methods are accepted for AT24C02C-STPD-TVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02C-STPD-TVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02C-STPD-TVAO?
AT24C02C-STPD-TVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02C-STPD-TVAO 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 AT24C02C-STPD-TVAO?
For technical support, including AT24C02C-STPD-TVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02C-STPD-TVAO requirements.
6.How does Aetrix verify that AT24C02C-STPD-TVAO is sourced from the original manufacturer or authorized distributors?
All AT24C02C-STPD-TVAO 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 AT24C02C-STPD-TVAO meets industry standards.
7.What is the process for return or replacement of AT24C02C-STPD-TVAO?
All AT24C02C-STPD-TVAO units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02C-STPD-TVAO, 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 AT24C02C-STPD-TVAO part is unused and in its original packaging.
Return procedure for AT24C02C-STPD-TVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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