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Microchip Technology AT24C02N-10SC-2.7
- Part No.:
- AT24C02N-10SC-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C02N-10SC-2.7.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,375
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Product details
Overview
AT24C02N-10SC-2.7 from Microchip Technology (formerly Atmel) is a 2K-bit (256 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 2.7V to 5.5V, supports 100 kHz I²C bus timing, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention - used in firmware parameter storage, calibration data logging, and configuration memory in industrial controllers.
For engineers reviewing the AT24C02N-10SC-2.7 datasheet, AT24C02N-10SC-2.7 pinout, AT24C02N-10SC-2.7 application, or AT24C02N-10SC-2.7 equivalent, this page provides verified package mapping (8-lead JEDEC SOIC), validated I²C timing compliance (100 kHz at 2.7V), confirmed page-write capability (8-byte pages), endurance specification (1M cycles), and real-world use context for BOM selection and layout integration.
Technical Context
The AT24C02N-10SC-2.7 implements a standard two-wire (I²C-compatible) serial interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. Its internal address space is organized as 256 words of 8 bits, accessed via 8-bit word addressing with automatic address increment during sequential reads.
Device addressing uses hard-wired A0–A2 pins (all active for AT24C02), enabling up to eight devices on one bus. Write protection is controlled by the WP pin: grounded for full read/write access, pulled high to lock the entire 2K array - no software lock required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8 bits) - sufficient for storing device ID, calibration coefficients, or small firmware flags without external memory overhead. |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interfacing with 3.3V microcontrollers and compatibility with legacy 5V systems. |
| I²C Clock Frequency | 100 kHz max at 2.7V - ensures reliable communication in electrically noisy industrial environments where higher speeds risk timing violations. |
| Write Cycle Time | 10 ms maximum - defines minimum delay between write commands; critical for firmware logic implementing polling or timeout-based write completion checks. |
| Endurance | 1 million write cycles - supports frequent recalibration or event-logging use cases over multi-year product lifetimes. |
| Data Retention | 100 years at +25°C - guarantees nonvolatile storage integrity across equipment service life without refresh. |
| Page Write Size | 8 bytes per page - allows efficient burst writes of related parameters (e.g., sensor offset/gain pairs) while minimizing bus transactions. |
Pinout & Package
AT24C02N-10SC-2.7 is housed in an 8-lead JEDEC-standard SOIC package (8S1), 3.9mm × 4.9mm footprint, 1.75mm height, gull-wing leads, RoHS-compliant. Pin 1 marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired LSB of 3-bit device address; enables up to 8 AT24C02 devices on same I²C bus when combined with A1/A2. |
| A1 | Device Address Input | Mid-bit of device address; tied HIGH/LOW to configure unique I²C slave address (0x50–0x57 range). |
| A2 | Device Address Input | MSB of device address; determines position within 8-device addressing window. |
| GND | Ground Reference | Return path for VCC and all signal currents; must be low-impedance to ensure noise-free SDA/SCL transitions. |
| VCC | Power Supply | Primary supply input (2.7–5.5V); decoupling capacitor (0.1 µF) required within 1 cm for stable I²C operation. |
| WP | Write Protect Control | Hardware lock: GND = read/write enabled; VCC = full 2K array write-protected - prevents accidental firmware corruption. |
| SCL | Serial Clock Input | Master-generated clock; Schmitt-triggered input rejects noise; rising edge clocks data into device, falling edge clocks data out. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up (typically 2.2–10 kΩ) to VCC; supports wire-OR with other I²C devices. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation (2.7V–5.5V) | Eliminates level-shifting circuitry when interfacing with 3.3V MCUs like STM32L or MSP430FR, reducing BOM count and board area. |
| Hardware write protection (WP pin) | Prevents unintended writes during power transients or firmware crashes - no software driver dependency for critical configuration safety. |
| 8-byte page write capability | Reduces I²C transaction overhead by 75% vs. byte-wise writes when updating grouped parameters (e.g., PID tuning constants). |
| Schmitt-triggered SCL input | Rejects slow-rising or noisy clock edges common in long-trace or mixed-signal PCB layouts, improving bus reliability without external filtering. |
| 100-year data retention | Meets long-lifecycle requirements for medical devices, utility meters, and industrial PLCs where field replacement is costly or impractical. |
Applications
| Industrial Sensor Node | Smart Meter Calibration |
|---|---|
Use Scenario: Remote temperature/humidity sensor node powered by energy harvesting, requiring infrequent but persistent storage of calibration offsets and last-seen values. IC Role / Device Role / Timing Role: Nonvolatile configuration memory holding sensor-specific gain/offset coefficients and runtime state snapshots. Use Value: Enables zero-maintenance operation over 10+ years using only 2.7V supply and 100 kHz I²C - compatible with ultra-low-power microcontrollers. |
Use Scenario: Electricity meter storing tariff tables, billing cycle counters, and metrology calibration data across decades of operation. IC Role / Device Role / Timing Role: Tamper-resistant parameter store; WP pin tied to secure voltage rail to prevent unauthorized reprogramming. Use Value: Guarantees regulatory compliance via 1M write cycles and 100-year retention - eliminates need for battery-backed SRAM or FRAM cost premiums. |
| Embedded HMI Configuration | Automotive Body Control Module |
Use Scenario: Touchscreen HMI retaining user preferences (brightness, language, contrast) after power loss in factory HMIs or medical displays. IC Role / Device Role / Timing Role: Persistent settings register mapped directly to MCU's I²C peripheral with no intervening logic. Use Value: Achieves <100 µA standby current at 2.7V - extends backup runtime during main power failure without increasing capacitor size. |
Use Scenario: BCM storing seat position memory, mirror presets, and door lock configurations across vehicle ignition cycles. IC Role / Device Role / Timing Role: Ruggedized configuration memory operating across -40°C to +85°C ambient with ESD-hardened I/O pins. Use Value: Qualified for automotive-grade temperature range and withstands load-dump transients via internal clamp diodes - no external protection needed. |
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 | STMicroelectronics 2K EEPROM; identical 8-lead SOIC package, 2.5–5.5V range, 400 kHz max (at 5V), but only 400 kHz rated above 2.5V - not guaranteed at 2.7V. | Requires 5V system or voltage margin >2.5V for full-speed operation; less suitable for strict 2.7V-only designs. | Select if 400 kHz speed is required and VCC ≥ 2.8V; verify timing margins under worst-case voltage/temp conditions. |
| BR24G02-3SER | Rohm 2K EEPROM; 1.7–5.5V range, 1 MHz I²C support, built-in write protect register (software-controlled), but larger 8-lead TSSOP package (3.0 × 4.4 mm vs. SOIC 3.9 × 4.9 mm). | Enables dynamic WP control in firmware, but TSSOP footprint differs - requires PCB redesign versus AT24C02N-10SC-2.7's SOIC. | Choose when programmable write protection is mandatory and layout flexibility exists for TSSOP; avoid if SOIC footprint is fixed. |
Compared with M24C02-RMN6TP and BR24G02-3SER, AT24C02N-10SC-2.7 offers guaranteed 100 kHz operation at 2.7V in JEDEC SOIC - making it the most robust choice for cost-sensitive, space-constrained 3.3V industrial designs where deterministic low-voltage timing and drop-in SOIC compatibility are primary requirements.
Availability
AT24C02N-10SC-2.7 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter calibration, and embedded HMI configuration requiring stable component supply, long-term lifecycle assurance, and consistent SOIC packaging across production batches.
Supply support for AT24C02N-10SC-2.7 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 company specializes in microcontrollers, analog, and memory solutions for industrial, automotive, and consumer markets.
The AT24Cxx series was designed specifically for reliable, low-power, two-wire nonvolatile storage in resource-constrained embedded systems - emphasizing write endurance, voltage flexibility, and I²C interoperability without external components.
FAQ
What is the maximum I²C clock frequency supported by AT24C02N-10SC-2.7 at 2.7V?
The AT24C02N-10SC-2.7 supports up to 100 kHz I²C clock frequency when operated at 2.7V, as specified in its AC characteristics table. This is lower than its 400 kHz rating at 5.0V, ensuring timing margin and noise immunity in low-voltage industrial environments. Exceeding 100 kHz at 2.7V may cause ACK failures or data corruption.
Does AT24C02N-10SC-2.7 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C02N-10SC-2.7 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 to VCC, selected based on bus capacitance and desired rise time. No internal pull-ups are present - omission will result in nonfunctional I²C communication.
How many AT24C02N-10SC-2.7 devices can share the same I²C bus?
Up to eight AT24C02N-10SC-2.7 devices can share one I²C bus, enabled by the three hardware address pins (A0, A1, A2). Each device must have a unique combination of these pins tied to VCC or GND to generate distinct 7-bit slave addresses in the 0x50–0x57 range. All pins are active for the AT24C02 variant.
What happens when the WP pin of AT24C02N-10SC-2.7 is connected to VCC?
When the WP pin of AT24C02N-10SC-2.7 is connected to VCC, the entire 2K-bit memory array becomes write-protected: all write attempts (byte or page) are ignored, though read operations continue normally. This hardware lock prevents accidental or malicious overwrites during power-up sequences or firmware faults - no software intervention required.
Is AT24C02N-10SC-2.7 qualified for automotive applications?
No, AT24C02N-10SC-2.7 is rated for commercial temperature range (0°C to +70°C) per its ordering code suffix "-10SC". For automotive use, Microchip offers the AT24C02C variant (e.g., AT24C02C-SSHM-T) qualified to AEC-Q100 Grade 3 (-40°C to +85°C) in SOIC packaging - AT24C02N-10SC-2.7 lacks automotive qualification documentation and thermal validation.
AT24C02N-10SC-2.7 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:
- 2.7V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C02N-10SC-2.7 FAQ
1.How can I place an order for AT24C02N-10SC-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02N-10SC-2.7 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-2.7 reliable?
The price and inventory of AT24C02N-10SC-2.7 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-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C02N-10SC-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02N-10SC-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02N-10SC-2.7?
AT24C02N-10SC-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02N-10SC-2.7 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-2.7?
For technical support, including AT24C02N-10SC-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02N-10SC-2.7 requirements.
6.How does Aetrix verify that AT24C02N-10SC-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C02N-10SC-2.7 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-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C02N-10SC-2.7?
All AT24C02N-10SC-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02N-10SC-2.7, 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-2.7 part is unused and in its original packaging.
Return procedure for AT24C02N-10SC-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C02N-10SC-2.7 Tags
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AT21CS01-STUM10-T
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93LC46BT-I/OT
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