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Microchip Technology AT24C02N-10SC
- Part No.:
- AT24C02N-10SC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C02N-10SC.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,515
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Product details
Overview
AT24C02N-10SC from Microchip Technology (formerly Atmel) is a 2-Kbit (256 × 8) I²C-compatible serial EEPROM with 2.7V to 5.5V supply operation, 100 kHz clock frequency at 2.7V, 8-byte page write capability, and hardware write protection via the WP pin. It serves as nonvolatile configuration storage in microcontroller-based systems requiring low-power, space-constrained data retention.
For engineers reviewing the AT24C02N-10SC datasheet, AT24C02N-10SC pinout, AT24C02N-10SC application, or AT24C02N-10SC equivalent, key selection criteria include its 2.7–5.5V operating range, SOIC-8 JEDEC package, 10 ms max write cycle time, 1 million endurance cycles, and compatibility with standard I²C bus timing at 100 kHz under low-voltage conditions.
Technical Context
The AT24C02N-10SC implements a two-wire I²C interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. Its internal memory is organized as 32 pages of 8 bytes each, requiring an 8-bit word address for random access.
Device addressing uses hardwired A0–A2 pins (all active for AT24C02), enabling up to eight devices on one bus. The WP pin provides hardware-level write protection across the full 2K array when pulled high, while standby current is specified at 1.6 µA typical at 2.7V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8 bits), sufficient for firmware calibration tables or device ID storage |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V logic without level shifting |
| I²C Clock Frequency | 100 kHz at 2.7V - ensures reliable communication in noise-sensitive industrial environments |
| Write Cycle Time | Max 10 ms - defines minimum interval between successive write commands |
| Endurance | 1 million write cycles - enables long-term logging or frequent parameter updates |
| Data Retention | 100 years - guarantees persistent storage without refresh in unpowered systems |
| Operating Temperature | 0°C to +70°C (Commercial grade) - validated for consumer and general industrial use |
Pinout & Package
AT24C02N-10SC is housed in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide, with gull-wing leads and standard 1.27 mm pitch. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired LSB of 3-bit device address; enables multi-device I²C bus configuration |
| A1 | Device Address Input | Mid-bit of device address; allows up to eight AT24C02N-10SC units on same bus |
| A2 | Device Address Input | MSB of device address; completes 3-bit hardware-selectable I²C slave address |
| GND | Ground Reference | Return path for VCC and signal currents; must be low-impedance for noise immunity |
| VCC | Power Supply | 2.7–5.5V main supply; decoupling capacitor required within 1 cm of pin |
| WP | Write Protect Control | Active-high hardware lock: ties full 2K array read-only when connected to VCC |
| SCL | Serial Clock Input | Positive-edge sampled I²C clock; Schmitt-triggered for robust noise rejection |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up resistor (typically 4.7 kΩ) |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 2.7V supply - eliminates need for voltage regulators in 3.3V systems |
| Schmitt-trigger inputs | Noise suppression on SCL and SDA - improves reliability in electrically noisy PCB layouts |
| Hardware write protection | WP pin disables all writes when high - prevents accidental overwrites during power transitions |
| Page write mode | 8-byte burst writes reduce I²C transaction overhead by 87% vs. byte-by-byte writes |
| High endurance & retention | 1M write cycles / 100-year data hold - suitable for field-updatable calibration or security keys |
Applications
| Smart Metering | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration coefficients, and tamper-event logs in electricity/water meters. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-history storage with infrequent writes and long-term retention. Use Value: Enables field recalibration without firmware update; survives 10+ year deployments with no battery backup. |
Use Scenario: Holding module identification, channel scaling factors, and fault history in modular I/O subsystems. IC Role / Device Role / Timing Role: Persistent parameter storage accessible via host MCU's I²C peripheral during initialization. Use Value: Eliminates manual DIP-switch configuration; supports hot-swap module replacement with auto-detection. |
| Consumer Appliance Control Boards | Medical Diagnostic Equipment |
Use Scenario: Saving user preferences (temperature setpoints, timer values) and usage counters in washing machines or HVAC controllers. IC Role / Device Role / Timing Role: Low-power, byte-addressable storage accessed only during power-on or UI interaction. Use Value: Maintains settings across AC power cycles; withstands >100,000 user-adjustment events over product lifetime. |
Use Scenario: Storing sensor calibration offsets, device serial numbers, and last-test parameters in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure, write-protected storage for traceability and regulatory compliance data. Use Value: WP pin prevents unauthorized modification; 100-year retention satisfies FDA 21 CFR Part 11 record-keeping requirements. |
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, but rated for -40°C to +85°C industrial temp range; 1.7–5.5V supply | Required for extended temperature environments (e.g., outdoor enclosures, automotive under-hood) | Select when ambient operating temperature exceeds +70°C or sub-zero startup is needed |
| M24C02-RMN6TP | 2K I²C EEPROM in SOIC-8; 1.8–5.5V supply; 400 kHz max clock; 5 ms write cycle | Higher speed and lower min voltage enable tighter timing margins in 1.8V systems | Prefer for new designs targeting ultra-low-power or mixed-voltage I²C buses with faster throughput needs |
Compared with AT24C02N-10SC, AT24C02D-SSHM-T extends thermal range at identical pinout and voltage tolerance, while M24C02-RMN6TP offers faster write cycles and broader low-voltage support - both serve as functional alternatives but require validation for WP behavior and timing compliance in existing designs.
Availability
AT24C02N-10SC is available at Aetrix Electronics and suitable for smart metering, industrial PLC modules, and consumer appliance control boards requiring stable component supply across production lifecycles.
Supply support for AT24C02N-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 AT24Cxx EEPROM family.
The AT24C02N-10SC belongs to Microchip's serial EEPROM product line, designed specifically for cost-sensitive, low-power embedded systems needing reliable nonvolatile storage with minimal board footprint and I²C bus simplicity.
FAQ
What is the maximum I²C clock frequency supported by AT24C02N-10SC?
The AT24C02N-10SC supports up to 100 kHz I²C clock frequency when operated at 2.7V, as specified in its AC characteristics table. At 5.0V, it supports 400 kHz, but the -10SC suffix denotes the 2.7V variant - so 100 kHz is the guaranteed maximum for AT24C02N-10SC under its rated voltage range.
Does AT24C02N-10SC require external pull-up resistors on SDA and SCL lines?
Yes, AT24C02N-10SC requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL input is passive. Typical values are 4.7 kΩ for 100 kHz operation at 3.3V; value selection depends on bus capacitance and desired rise time per I²C specification.
How does the Write Protect (WP) pin function on AT24C02N-10SC?
On AT24C02N-10SC, the WP pin enables hardware write protection: when tied to VCC, all write operations (byte and page) to the entire 2K memory array are blocked; when grounded, normal read/write functionality is restored. This prevents accidental overwrites during power-up or firmware glitches.
What package type is used for AT24C02N-10SC?
AT24C02N-10SC uses an 8-lead JEDEC SOIC package (designated 8S1), 0.150" wide, with gull-wing leads and 1.27 mm pitch. It is RoHS-compliant and compatible with standard surface-mount reflow profiles per J-STD-020.
Is AT24C02N-10SC suitable for automotive applications?
No, AT24C02N-10SC is rated for commercial temperature range (0°C to +70°C) and is not qualified to AEC-Q100. For automotive use, Microchip offers the AT24C02C variant (AEC-Q100 Grade 3, -40°C to +85°C) - AT24C02N-10SC should only be deployed in non-automotive environments.
AT24C02N-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
AT24C02N-10SC FAQ
1.How can I place an order for AT24C02N-10SC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02N-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 AT24C02N-10SC reliable?
The price and inventory of AT24C02N-10SC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02N-10SC is usually 5 days.
3.What payment methods are accepted for AT24C02N-10SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02N-10SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02N-10SC?
AT24C02N-10SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02N-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 AT24C02N-10SC?
For technical support, including AT24C02N-10SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02N-10SC requirements.
6.How does Aetrix verify that AT24C02N-10SC is sourced from the original manufacturer or authorized distributors?
All AT24C02N-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 AT24C02N-10SC meets industry standards.
7.What is the process for return or replacement of AT24C02N-10SC?
All AT24C02N-10SC units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02N-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 AT24C02N-10SC part is unused and in its original packaging.
Return procedure for AT24C02N-10SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C02N-10SC Tags
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