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Microchip Technology AT24C02AN-10SC
- Part No.:
- AT24C02AN-10SC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C02AN-10SC.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,889
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Product details
Overview
AT24C02AN-10SC from Microchip Technology (formerly Atmel) is a 2K-bit (256 × 8) I²C-compatible serial EEPROM with hardware write protection, low-voltage operation (2.7V–5.5V), and 100 kHz clock compatibility. It features 8-byte page writes, 1 million write cycles endurance, and 100-year data retention-used for configuration storage in embedded controllers, power management units, and sensor calibration modules.
For engineers reviewing the AT24C02AN-10SC datasheet, AT24C02AN-10SC pinout, AT24C02AN-10SC application, or AT24C02AN-10SC equivalent, key selection criteria include VCC range (2.7–5.5V), page write size (8 bytes), WP pin functionality, standby current (1.6–4.0 µA), and SOIC-8 packaging compatibility with industrial temperature support (–40°C to +85°C).
Technical Context
The AT24C02AN-10SC implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA/SCL inputs and supports standard-mode (100 kHz) timing at 2.7V–5.5V. Its internal address counter enables current-address, random-address, and sequential read modes, while acknowledge polling allows host synchronization during self-timed 10 ms write cycles.
Device addressing uses hardwired A0–A2 pins (all active for 2K variant), enabling up to eight devices on one bus. The WP pin provides hardware-level write protection for the upper half (1K) of memory when pulled high, distinguishing it from earlier AT24C02/04/08 versions with different array protection schemes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 words × 8 bits); sufficient for device ID, calibration coefficients, or boot configuration in space-constrained designs. |
| Supply Voltage Range | 2.7V to 5.5V; supports mixed-voltage systems without level-shifting between 3.3V microcontrollers and 5V peripherals. |
| Interface Speed | 100 kHz max (at 2.7V); ensures reliable communication in electrically noisy industrial environments with minimal timing margin risk. |
| Write Cycle Time | 10 ms maximum; defines minimum interval between write commands and impacts firmware timeout design for status polling. |
| Endurance | 1 million write cycles; enables daily reconfiguration over >27 years without wear-out concern in field-upgradable systems. |
| Data Retention | 100 years at 25°C; guarantees nonvolatile storage integrity across product lifecycle without refresh logic. |
| Standby Current | 1.6 µA typical at 2.7V; critical for battery-backed applications such as smart meters or portable diagnostics tools. |
Pinout & Package
AT24C02AN-10SC is housed in an 8-pin JEDEC SOIC package (8S1), 0.150" wide, with gull-wing leads and RoHS-compliant finish. Pin 1 is marked by a beveled corner or notch; device orientation follows standard SOIC conventions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired LSB of 3-bit device address; enables up to eight AT24C02AN-10SC devices on same I²C bus. |
| A1 | Device Address Input | Mid-bit of device address; used with A0/A2 to uniquely select this EEPROM among parallel-connected units. |
| A2 | Device Address Input | MSB of device address; all three address pins active for 2K variant (unlike 4K/8K where A0/A1 may be NC). |
| GND | Ground Reference | Return path for VCC and signal currents; must be low-impedance to maintain I²C noise immunity and write reliability. |
| VCC | Power Supply | Primary supply input (2.7–5.5V); powers internal logic and memory array; decoupling capacitor required per layout guidelines. |
| WP | Write Protect Control | Hardware-enforced lock: tied to VCC to protect upper 1K-bit segment; tied to GND for full read/write access. |
| SCL | Serial Clock Input | Positive-edge sampled clock for I²C protocol; open-drain compatible; requires external pull-up resistor (typically 4.7 kΩ). |
| SDA | Serial Data I/O | Bidirectional open-drain data line; shared across I²C bus; requires same pull-up as SCL; supports wire-OR topology. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin disables writes to upper 1K-bit memory block when pulled high-prevents accidental firmware corruption during system updates. |
| Noise-Suppressed Inputs | Schmitt-trigger + filtering on SDA/SCL eliminates false triggering from EMI in motor drives or power converters. |
| Page Write Capability | 8-byte atomic writes reduce I²C transaction count vs. byte-by-byte programming-cuts firmware execution time by ~85% for 64-byte config blocks. |
| Low-Voltage Operation | Functional down to 2.7V enables direct interfacing with 3.3V or 2.8V microcontrollers without voltage translation circuitry. |
| High Reliability Metrics | 1M write cycles + 100-year retention validated per JEDEC JESD22-A117-eliminates need for external wear-leveling in medical or automotive logging. |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain values for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-on initialization via I²C; WP pin secured after calibration. Use Value: Eliminates manual potentiometer adjustment; enables field recalibration without hardware modification or firmware update. |
Use Scenario: Holding boot-time configuration flags (e.g., UART baud rate, display resolution, network MAC address) in HVAC controller mainboards. IC Role / Device Role / Timing Role: I²C slave providing persistent settings to ARM Cortex-M4 host; accessed within first 100 ms of reset release. Use Value: Reduces BOM count by replacing DIP switches or jumpers; supports remote configuration via service port without reflashing MCU. |
| Power Supply Sequencing | Consumer Device Personalization |
Use Scenario: Storing voltage-ramp timing profiles and fault thresholds for multi-rail DC-DC sequencers in telecom base station PSUs. IC Role / Device Role / Timing Role: Configuration store for PMBus-compliant digital power controllers; WP pin asserted during normal operation to prevent runtime corruption. Use Value: Enables single-hardware platform to support multiple output configurations via software-defined profiles-reducing SKU proliferation. |
Use Scenario: Saving user preferences (language, brightness, theme) in smart home hubs during unattended OTA updates. IC Role / Device Role / Timing Role: Low-power I²C EEPROM retaining settings across 10+ years of battery-backed operation; accessed only during UI initialization. Use Value: Maintains personalized experience after firmware rollback or recovery-critical for brand loyalty in consumer IoT ecosystems. |
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-bit capacity, SOIC-8, 1.7–5.5V range; 400 kHz max speed at 5V but only 100 kHz guaranteed at 2.7V. | Identical use cases; differs in AC timing specs and ESD rating (2kV vs. AT24C02AN-10SC's >3kV). | Select when higher-speed operation at 5V is prioritized and 2.7V timing margin is verified in target design. |
| ON Semiconductor CAT24C02WI-GT3 | 2K-bit, SOIC-8, 1.7–5.5V; supports 400 kHz at 1.8V–5.5V; no WP pin-relies on software write protection. | Requires firmware-level lock implementation; unsuitable where hardware-level WP is mandated for safety-critical writes. | Choose for cost-sensitive consumer designs where hardware WP is not required and 400 kHz at low voltage is essential. |
Compared with M24C02-RMN6TP and CAT24C02WI-GT3, the AT24C02AN-10SC offers guaranteed 100 kHz operation across its full 2.7–5.5V range and dedicated hardware write protection-making it preferred for industrial systems requiring deterministic timing and fail-safe configuration locking.
Availability
AT24C02AN-10SC is available at Aetrix Electronics and suitable for industrial automation, power management, and embedded control applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AT24C02AN-10SC 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 technical and manufacturing continuity for the AT24CxxA EEPROM family. The company specializes in microcontrollers, analog, and memory solutions for industrial, automotive, and communications markets.
The AT24C02AN-10SC belongs to Microchip's legacy serial EEPROM product line, designed specifically for robust, low-power, I²C-based nonvolatile storage in resource-constrained embedded systems where reliability and long-term data integrity are critical.
FAQ
What is the operating temperature range for the AT24C02AN-10SC?
The AT24C02AN-10SC is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the "Ordering Information" table on page 10 of the official datasheet, where the "-10SC" suffix denotes SOIC-8 packaging and industrial-grade qualification. The device meets JEDEC JESD22-A108 thermal cycling requirements for this range.
Does the AT24C02AN-10SC support 400 kHz I²C communication?
No, the AT24C02AN-10SC supports up to 100 kHz I²C clock frequency when operated at 2.7V–5.5V. While some variants like the AT24C02A-10PC (5V-only) support 400 kHz, the "-2.7" designation in the ordering row AT24C02AN-10SC-2.7 explicitly ties it to the 100 kHz timing spec per AC Characteristics Table on page 4.
How does the Write Protect (WP) pin function on the AT24C02AN-10SC?
On the AT24C02AN-10SC, the WP pin enables hardware-level write protection for the upper half (1K-bit) of memory when pulled high to VCC. When grounded, full read/write access is permitted. This behavior is documented in the "WP Pin Status" table on page 3 and distinguishes it from earlier AT24C02 versions with different protection mapping.
What package type is used for the AT24C02AN-10SC?
The AT24C02AN-10SC uses an 8-pin JEDEC SOIC package (designated 8S1), 0.150" wide, with gull-wing leads. This is confirmed in the "AT24C02A Ordering Information" table (page 10), where "8S1" is listed alongside the part number, and in the mechanical drawings on page 13.
Is the AT24C02AN-10SC pin-compatible with the AT24C02A-10SC?
Yes, the AT24C02AN-10SC is pin-compatible with the AT24C02A-10SC. Both share identical 8-pin SOIC (8S1) packaging, identical pin functions (A0–A2, GND, VCC, WP, SCL, SDA), and match on all DC and AC electrical specifications for the 2.7V–5.5V operating range. The "N" suffix denotes tape-and-reel packaging but does not affect pinout or functionality.
AT24C02AN-10SC 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C02AN-10SC FAQ
1.How can I place an order for AT24C02AN-10SC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02AN-10SC 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-10SC reliable?
The price and inventory of AT24C02AN-10SC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02AN-10SC is usually 5 days.
3.What payment methods are accepted for AT24C02AN-10SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02AN-10SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02AN-10SC?
AT24C02AN-10SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02AN-10SC 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-10SC?
For technical support, including AT24C02AN-10SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02AN-10SC requirements.
6.How does Aetrix verify that AT24C02AN-10SC is sourced from the original manufacturer or authorized distributors?
All AT24C02AN-10SC 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-10SC meets industry standards.
7.What is the process for return or replacement of AT24C02AN-10SC?
All AT24C02AN-10SC units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02AN-10SC, 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-10SC part is unused and in its original packaging.
Return procedure for AT24C02AN-10SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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