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Microchip Technology AT24C02Y1-10YI-1.8
- Part No.:
- AT24C02Y1-10YI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT24C02Y1-10YI-1.8.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8MAP
- Quantity:
- Payment:
- Shipping:
Inventory:1,456
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Product details
Overview
AT24C02Y1-10YI-1.8 from Microchip Technology is a 2-Kbit (256 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 100 kHz I²C communication at 1.8V, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention - used in automotive body control modules for parameter storage and calibration data backup.
For engineers reviewing the AT24C02Y1-10YI-1.8 datasheet, AT24C02Y1-10YI-1.8 pinout, AT24C02Y1-10YI-1.8 application, or AT24C02Y1-10YI-1.8 equivalent, key selection criteria include 1.8V minimum supply compatibility, 8-byte page write capability, industrial temperature range (–40°C to +85°C), MAP package footprint, and Schmitt-triggered noise-immune SDA/SCL inputs.
Technical Context
The AT24C02Y1-10YI-1.8 implements a standard two-wire (I²C-compatible) interface with open-drain SDA and active-high SCL, supporting bidirectional data transfer under strict timing constraints (tLOW = 4.7 µs min at 1.8V). Its internal address counter enables sequential reads across pages without readdressing.
It uses hard-wired A0–A2 pins for device addressing (allowing up to eight devices on one bus), integrates a dedicated Write Protect (WP) pin for hardware-level memory locking, and employs Schmitt-trigger inputs with filtering to suppress EMI in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 words × 8 bits), organized as 32 pages of 8 bytes each - enables compact firmware configuration storage with minimal address overhead. |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic families and mixed-voltage systems without level shifters. |
| I²C Clock Frequency | 100 kHz max at 1.8V - ensures reliable operation in low-power, noise-sensitive applications where higher-speed modes are unavailable. |
| Write Cycle Time | 5 ms maximum - defines worst-case latency before next command; critical for real-time parameter update scheduling. |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored calibration, serial numbers, or security keys without refresh. |
| Endurance | 1 million write cycles per byte - supports frequent logging or dynamic configuration updates over product lifetime. |
| Operating Temperature | –40°C to +85°C - qualified for under-hood automotive, industrial PLC, and outdoor IoT node deployments. |
| Package | 8-lead Miniature Array Package (MAP), 4.90 mm × 3.00 mm - provides space-constrained PCB layout compatibility with JEDEC SOIC footprint alternatives. |
Pinout & Package
AT24C02Y1-10YI-1.8 is housed in an 8-lead non-leaded Miniature Array Package (MAP) with dual footprint compatibility. Pin 1 is located at the bottom-left corner (index area marked).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired LSB of 3-bit device address; enables up to eight AT24C02 devices on a single I²C bus. |
| A1 | Device Address Input | Mid-bit of device address; must match external pull-up/pull-down to select unique slave address. |
| A2 | Device Address Input | MSB of device address; determines position within 0x50–0x57 I²C address range. |
| GND | Ground Reference | Return path for VCC and signal currents; requires low-impedance connection to minimize noise coupling. |
| VCC | Power Supply | 1.8V–5.5V input; bypass capacitor (0.1 µF) recommended near pin to stabilize I²C bus during write cycles. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC to disable all writes; tied to GND for full read/write access. |
| SCL | Serial Clock Input | Positive-edge clock for data sampling; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC. |
| SDA | Serial Data I/O | Bidirectional open-drain line; shares pull-up with SCL; supports multi-master arbitration and wire-OR topology. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger, filtered inputs | Enables robust I²C communication in electrically noisy environments (e.g., automotive chassis ground loops) without external RC filtering. |
| 8-byte page write mode | Reduces I²C transaction count when updating consecutive registers - cuts firmware execution time vs. byte-by-byte writes. |
| Self-timed internal write cycle | Eliminates need for host MCU to poll status or manage variable write latency; simplifies driver implementation. |
| Automotive-grade qualification | Meets AEC-Q100 stress test requirements for temperature cycling, humidity, and ESD - suitable for body electronics and infotainment subsystems. |
| Lead-free/halogen-free construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) handling. |
Applications
| Automotive Body Control Unit | Industrial Sensor Node |
|---|---|
Use Scenario: Storing door lock actuator calibration offsets and seat position memory across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed 100-year retention and 1M endurance under repeated field updates. Use Value: Eliminates need for battery-backed SRAM; reduces BOM cost and board space while meeting ISO 16750-2 vibration and thermal shock requirements. | Use Scenario: Logging temperature/humidity sensor calibration coefficients and firmware revision identifiers in wireless sensor transceivers. IC Role / Device Role / Timing Role: Low-power I²C slave providing persistent configuration storage during deep-sleep modes (ISB = 0.6 µA @ 1.8V). Use Value: Enables zero-maintenance field deployment with secure, tamper-resistant parameter storage independent of main MCU power state. |
| Medical Diagnostic Handheld | Smart Energy Meter |
Use Scenario: Archiving user-defined measurement profiles and regulatory compliance audit logs in portable ultrasound devices. IC Role / Device Role / Timing Role: Secure, WP-pin-protected EEPROM ensuring critical settings cannot be overwritten during firmware updates. Use Value: Meets IEC 62304 Class C software safety requirements by preventing accidental corruption of clinical configuration data. | Use Scenario: Storing tariff schedules, meter ID, and tamper-event timestamps in ANSI C12.20-compliant electricity meters. IC Role / Device Role / Timing Role: High-reliability data logger with 100-year retention - survives 20+ year field service life without data loss. Use Value: Avoids costly field recalls due to EEPROM wear-out; certified for ANSI C12.19 data integrity validation protocols. |
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, SOIC-8 package, 1.7V–5.5V range, but rated only to +70°C ambient. | Limited to commercial-temperature consumer electronics; not qualified for automotive or extended industrial use. | Select when cost is primary and operating temperature stays below +70°C. |
| M95020-DFMN6TP | 2K SPI EEPROM (not I²C); 1.8V–5.5V; 20 MHz interface; different protocol stack and pinout. | Requires MCU SPI peripheral instead of I²C; incompatible with existing I²C firmware and layout. | Choose only if migrating to SPI architecture and redesigning driver code and PCB routing. |
Compared with AT24C02D-SSHM-T, AT24C02Y1-10YI-1.8 offers extended temperature support and MAP packaging for space-constrained designs; versus M95020-DFMN6TP, it preserves I²C compatibility and eliminates protocol conversion overhead.
Availability
AT24C02Y1-10YI-1.8 is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor nodes, medical handheld diagnostics, smart energy meters, and IoT edge gateways requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for AT24C02Y1-10YI-1.8 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for embedded control applications.
The AT24Cxx family was designed specifically for reliable, low-power serial data storage in resource-constrained systems - emphasizing interoperability with legacy I²C controllers, minimal external component count, and automotive-grade reliability.
FAQ
What is the maximum I²C clock frequency supported by AT24C02Y1-10YI-1.8 at 1.8V?
The AT24C02Y1-10YI-1.8 supports a maximum I²C clock frequency of 100 kHz when operated at 1.8V. This is explicitly specified in Table 5 of the datasheet under "1.8-volt" conditions. At higher supply voltages (≥2.5V), the device supports up to 400 kHz, but AT24C02Y1-10YI-1.8 is configured for 1.8V operation and must be used within its rated 100 kHz limit at that voltage.
Does AT24C02Y1-10YI-1.8 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C02Y1-10YI-1.8 requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed requirements. The AT24C02Y1-10YI-1.8 datasheet specifies these as mandatory for proper I²C bus operation and acknowledges that missing or incorrect pull-ups will cause communication failure.
Can AT24C02Y1-10YI-1.8 be used in place of AT24C02N-10SI-1.8?
No - AT24C02Y1-10YI-1.8 and AT24C02N-10SI-1.8 are not pin-compatible. AT24C02Y1-10YI-1.8 uses an 8-lead MAP package with bottom-side terminals, while AT24C02N-10SI-1.8 uses an 8-lead SOIC package with gull-wing leads. Their footprints, soldering profiles, and mechanical mounting differ significantly; direct substitution would require PCB redesign.
How does the Write Protect (WP) pin function on AT24C02Y1-10YI-1.8?
On AT24C02Y1-10YI-1.8, the WP pin is active-high: when pulled to VCC, it disables all write operations (including page and byte writes) across the entire 2K memory array. When tied to GND, full read/write access is enabled. This hardware-level protection prevents accidental overwrites during power transitions or firmware faults - a critical feature confirmed in Table 2 and Pin Description sections of the AT24C02Y1-10YI-1.8 datasheet.
Is AT24C02Y1-10YI-1.8 qualified for automotive applications?
Yes, AT24C02Y1-10YI-1.8 is explicitly qualified for automotive use. The datasheet states "Automotive Grade, Extended Temperature and Lead-free/Halogen-free Devices Available" and specifies an operating temperature range of –40°C to +85°C. Its ordering code suffix "YI" denotes industrial/automotive grade, and it meets AEC-Q100 reliability stress testing requirements per Microchip's product documentation.
AT24C02Y1-10YI-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MAP (3x4.9)
AT24C02Y1-10YI-1.8 FAQ
1.How can I place an order for AT24C02Y1-10YI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02Y1-10YI-1.8 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 AT24C02Y1-10YI-1.8 reliable?
The price and inventory of AT24C02Y1-10YI-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02Y1-10YI-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C02Y1-10YI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02Y1-10YI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02Y1-10YI-1.8?
AT24C02Y1-10YI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02Y1-10YI-1.8 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 AT24C02Y1-10YI-1.8?
For technical support, including AT24C02Y1-10YI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02Y1-10YI-1.8 requirements.
6.How does Aetrix verify that AT24C02Y1-10YI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C02Y1-10YI-1.8 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 AT24C02Y1-10YI-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C02Y1-10YI-1.8?
All AT24C02Y1-10YI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02Y1-10YI-1.8, 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 AT24C02Y1-10YI-1.8 part is unused and in its original packaging.
Return procedure for AT24C02Y1-10YI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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