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Microchip Technology AT24C02N-10SI-1.8
- Part No.:
- AT24C02N-10SI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C02N-10SI-1.8.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,731
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Product details
Overview
AT24C02N-10SI-1.8 from Microchip Technology (formerly Atmel) is a 2 Kbit (256 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage embedded systems. It operates from 1.8 V to 5.5 V, supports 100 kHz I²C bus speed at 1.8 V, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in battery-powered IoT sensors for nonvolatile parameter storage.
For engineers reviewing the AT24C02N-10SI-1.8 datasheet, AT24C02N-10SI-1.8 pinout, AT24C02N-10SI-1.8 application, or AT24C02N-10SI-1.8 equivalent, key selection criteria include 1.8 V minimum supply, industrial temperature range (–40°C to +85°C), JEDEC SOIC-8 package, 8-byte page write capability, and Schmitt-triggered noise-immune inputs.
Technical Context
The AT24C02N-10SI-1.8 implements a two-wire I²C interface with open-drain SDA/SCL pins, device addressing via A0–A2 pins (hardwired for 2K density), and hardware write protection controlled by the WP pin. It uses internal address counters for sequential reads and supports both byte and page write modes.
Its memory is organized as 32 pages of 8 bytes each, requiring an 8-bit word address for random access. The device enters low-power standby mode after STOP condition receipt and supports acknowledge polling during write cycles - critical for deterministic firmware timing in resource-constrained microcontrollers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8 bits), enabling storage of calibration constants or configuration flags in compact firmware. |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V logic families and mixed-voltage systems without level shifters. |
| I²C Clock Frequency | 100 kHz max at 1.8 V - ensures reliable communication in low-power, noise-sensitive environments like portable medical devices. |
| Write Cycle Time | 10 ms max - defines minimum delay between write commands; impacts firmware latency in real-time logging applications. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - meets long-life requirements for industrial control EEPROM usage. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade operation in automotive body controllers and factory automation nodes. |
| Package | 8-lead JEDEC SOIC (8S1), 3.9 mm × 4.9 mm footprint - compatible with standard reflow assembly and space-constrained PCB layouts. |
Pinout & Package
AT24C02N-10SI-1.8 is housed in an 8-lead JEDEC-standard SOIC package (package code 8S1), with 1.27 mm lead pitch and gull-wing surface-mount terminals. The package is RoHS-compliant and rated for industrial temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired address bit; enables up to eight AT24C02 devices on one I²C bus - essential for multi-sensor node addressing. |
| A1 | Device Address Input | Second hardwired address bit; combined with A0/A2, forms 3-bit device ID for bus arbitration and conflict avoidance. |
| A2 | Device Address Input | Third hardwired address bit; allows unique addressing of multiple 2K EEPROMs sharing SDA/SCL lines. |
| GND | Ground Reference | Primary return path for all internal circuitry and I/O; must be low-impedance to maintain noise immunity in mixed-signal systems. |
| VCC | Power Supply | Single-supply input supporting 1.8–5.5 V; powers internal logic, memory array, and I/O buffers - no separate VIO required. |
| WP | Write Protect Control | Hardware-enforced read-only mode when pulled high; prevents accidental overwrites during power-up/down or firmware faults. |
| SCL | Serial Clock Input | Open-drain clock line synchronized to master; edge-triggered sampling requires external pull-up for bus integrity. |
| SDA | Serial Data I/O | Bi-directional open-drain data line; shared across I²C peripherals; requires external pull-up and noise filtering per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables robust operation in electrically noisy environments (e.g., motor drives) by rejecting sub-threshold voltage transients on SCL/SDA. |
| 8-byte page write | Reduces I²C transaction overhead by writing up to 8 bytes per command - cuts firmware execution time vs. byte-by-byte writes. |
| Self-timed write cycle | Eliminates need for external timing control; firmware can poll ACK or use fixed 10 ms delay - simplifies driver implementation. |
| Industrial temperature grade | Validated operation from –40°C to +85°C ensures reliability in uncontrolled ambient deployments like smart metering or HVAC controls. |
| Low standby current | 3 µA max at 1.8 V minimizes quiescent drain in battery-powered applications - extends shelf life of coin-cell-powered devices. |
Applications
| Smart Meter Calibration Storage | Industrial PLC Configuration Backup |
|---|---|
|
Use Scenario: Storing meter-specific calibration coefficients and tariff tables in utility-grade electricity meters operating on lithium-thionyl chloride batteries. IC Role / Device Role / Timing Role: Nonvolatile parameter storage IC providing byte-addressable, field-updatable memory accessible via I²C during meter initialization or firmware updates. Use Value: Enables accurate energy measurement across 10+ year product lifetime without recalibration, leveraging 100-year data retention and 1M write endurance. |
Use Scenario: Preserving user-defined I/O mapping, PID tuning parameters, and alarm thresholds in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: System configuration EEPROM that retains settings across AC power loss and cold restarts, accessed during boot sequence. Use Value: Eliminates manual reconfiguration after power failure; 1.8 V operation allows direct connection to 3.3 V or 2.5 V PLC power rails without regulators. |
| Wearable Health Sensor Settings | Automotive Body Control Module NVM |
|
Use Scenario: Saving user preferences (e.g., display brightness, sampling rate) and sensor offset corrections in Bluetooth-enabled pulse oximeters. IC Role / Device Role / Timing Role: Low-power configuration memory IC interfaced directly to an ARM Cortex-M0+ MCU's I²C peripheral at 1.8 V. Use Value: 3 µA standby current extends single-charge battery life beyond 6 months; Schmitt-trigger inputs reject EMI from RF transceivers. |
Use Scenario: Storing door lock actuator calibration, mirror position presets, and lighting profiles in automotive body control modules. IC Role / Device Role / Timing Role: Automotive-qualified EEPROM providing fail-safe storage of user-customized vehicle settings across ignition cycles. Use Value: Industrial temperature rating ensures operation under hood temperatures up to +85°C; WP pin prevents corruption during CAN bus transients. |
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, 1.7–5.5 V supply, 400 kHz @ 5 V only; SOIC-8; 1 M write cycles, 40-year retention. | Lacks 100 kHz guarantee at 1.8 V; lower data retention spec limits use in long-life infrastructure equipment. | Select if higher-speed 5 V operation is prioritized and 1.8 V margin is not required. |
| BR24G02NUX-10 | 2 Kbit, 1.6–5.5 V, 1 MHz I²C @ 3.0–5.5 V; TSSOP-8; 4 M write cycles, 100-year retention. | Requires external level shifting below 2.5 V; TSSOP-8 footprint differs from SOIC-8 - board redesign needed. | Choose for extended endurance and faster writes where layout allows TSSOP and voltage translation. |
Compared with M24C02-RMN6TP and BR24G02NUX-10, the AT24C02N-10SI-1.8 uniquely guarantees full 100 kHz I²C functionality across its entire 1.8 V operating range while maintaining pin-compatible JEDEC SOIC-8 packaging - simplifying qualification in battery-powered industrial designs.
Availability
AT24C02N-10SI-1.8 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, wearable health monitors, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for AT24C02N-10SI-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 global semiconductor company specializing in microcontrollers, analog components, and nonvolatile memory solutions, with broad industrial and automotive qualifications.
The AT24Cxx family was designed specifically for cost-sensitive, low-power embedded systems needing reliable, I²C-accessible nonvolatile storage - targeting applications from consumer wearables to industrial control nodes.
FAQ
What is the minimum operating voltage for AT24C02N-10SI-1.8?
The AT24C02N-10SI-1.8 is fully specified to operate down to 1.8 V, with guaranteed 100 kHz I²C communication, 3 µA standby current, and valid read/write functionality across the full industrial temperature range. This makes AT24C02N-10SI-1.8 suitable for direct integration with 1.8 V logic domains without voltage translation.
Does AT24C02N-10SI-1.8 support page write operations?
Yes, AT24C02N-10SI-1.8 supports 8-byte page writes, allowing up to eight consecutive bytes to be written in a single I²C transaction. This reduces bus overhead and firmware latency compared to individual byte writes - particularly valuable in time-critical sensor logging applications using AT24C02N-10SI-1.8.
How does the Write Protect (WP) pin function on AT24C02N-10SI-1.8?
On AT24C02N-10SI-1.8, the WP pin enables hardware-level write protection: when pulled high to VCC, it disables all write operations to the entire 2 Kbit memory array; when grounded, normal read/write functions resume. This prevents accidental overwrites during power transitions or software exceptions.
Is AT24C02N-10SI-1.8 compatible with standard I²C protocols?
Yes, AT24C02N-10SI-1.8 implements a standard two-wire I²C interface compliant with Philips I²C specification, supporting START/STOP conditions, 7-bit device addressing (with A0–A2 inputs), ACK/NACK handshaking, and repeated START sequences - ensuring interoperability with all standard I²C masters.
What package type is used for AT24C02N-10SI-1.8?
AT24C02N-10SI-1.8 uses an 8-lead JEDEC-standard SOIC package (package code 8S1), measuring 3.9 mm × 4.9 mm with 1.27 mm lead pitch. This surface-mount package supports automated assembly and is footprint-compatible with industry-standard SOIC-8 footprints.
AT24C02N-10SI-1.8 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C02N-10SI-1.8 FAQ
1.How can I place an order for AT24C02N-10SI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02N-10SI-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 AT24C02N-10SI-1.8 reliable?
The price and inventory of AT24C02N-10SI-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 AT24C02N-10SI-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C02N-10SI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02N-10SI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02N-10SI-1.8?
AT24C02N-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02N-10SI-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 AT24C02N-10SI-1.8?
For technical support, including AT24C02N-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02N-10SI-1.8 requirements.
6.How does Aetrix verify that AT24C02N-10SI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C02N-10SI-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 AT24C02N-10SI-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C02N-10SI-1.8?
All AT24C02N-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02N-10SI-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 AT24C02N-10SI-1.8 part is unused and in its original packaging.
Return procedure for AT24C02N-10SI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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