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Microchip Technology AT24C02N-10SI-2.7
- Part No.:
- AT24C02N-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C02N-10SI-2.7.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,410
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Product details
Overview
AT24C02N-10SI-2.7 from Microchip Technology (formerly Atmel) is a 2K-bit (256 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 2.7V to 5.5V, supports 100 kHz I²C bus speed, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in industrial sensor calibration storage, power supply configuration memory, and firmware parameter backup.
For engineers reviewing the AT24C02N-10SI-2.7 datasheet, AT24C02N-10SI-2.7 pinout, AT24C02N-10SI-2.7 application, or AT24C02N-10SI-2.7 equivalent, key selection factors include its 2.7–5.5V operating range, 8-pin SOIC package, page-write capability (8-byte pages), Schmitt-trigger inputs for noise immunity, and industrial temperature rating (−40°C to +85°C).
Technical Context
The AT24C02N-10SI-2.7 implements a standard two-wire I²C interface with open-drain SDA and active-high SCL, supporting standard-mode (100 kHz) timing at 2.7V. Its internal architecture comprises 32 pages of 8 bytes each, requiring an 8-bit word address for random access and enabling partial page writes without rollover within the same page.
Device addressing uses hardwired A0–A2 pins (all connected internally for AT24C02), allowing up to eight devices on a single I²C bus. The WP pin provides hardware-level write protection: tied to VCC, it locks the full 2K array; tied to GND, full read/write operation is enabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8 bits), organized as 32 pages × 8 bytes - enables compact configuration storage with minimal address overhead |
| Supply Voltage Range | 2.7 V to 5.5 V - supports direct interfacing with 3.3V and 5V microcontrollers without level-shifting |
| I²C Clock Frequency | 100 kHz max at 2.7V - ensures reliable communication in noise-sensitive industrial environments |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive byte/page writes; impacts firmware update latency |
| Endurance & Retention | 1 million write cycles / 100 years data retention - suitable for field-updatable calibration tables and infrequently modified system parameters |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade operation in programmable logic controllers and motor drives |
| Input Filtering | Schmitt-trigger inputs on SDA/SCL - suppresses EMI-induced glitches on long PCB traces or noisy backplanes |
Pinout & Package
AT24C02N-10SI-2.7 is housed in an 8-lead JEDEC-standard SOIC package (8S1), 3.9 mm × 4.9 mm body, 1.27 mm lead pitch, gull-wing leads. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired low (GND) for AT24C02; sets LSB of 7-bit device address (0x50–0x57) |
| A1 | Device Address Input | Hard-wired low (GND); sets middle bit of device address |
| A2 | Device Address Input | Hard-wired low (GND); sets MSB of device address - enables up to 8 devices on one I²C bus |
| GND | Ground Reference | Return path for all internal circuitry and I/O; must be low-impedance for stable EEPROM operation |
| VCC | Power Supply | Primary supply input (2.7–5.5V); decoupling capacitor (0.1 µF) required near pin for noise suppression |
| WP | Write Protect Control | Active-high hardware lock: VCC = full-array protection; GND = normal read/write - prevents accidental firmware corruption |
| SCL | Serial Clock Input | Positive-edge clock for data transfer; requires external pull-up resistor (typically 4.7 kΩ) |
| SDA | Serial Data I/O | Open-drain bidirectional line; shared across I²C bus; requires same external pull-up as SCL |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation (2.7V–5.5V) | Enables direct integration into 3.3V systems without voltage translation, reducing BOM count and layout complexity |
| Hardware write protection (WP pin) | Prevents unintended overwrites during power transients or software faults - critical for factory-calibrated sensor coefficients |
| 8-byte page write mode | Reduces I²C transaction count when updating multi-byte parameters (e.g., PID gains), improving write efficiency vs. byte-by-byte |
| Schmitt-trigger, filtered inputs | Rejects sub-microsecond noise spikes on SDA/SCL lines - essential for robust operation in motor drive or power supply control boards |
| Industrial temperature range (−40°C to +85°C) | Validated for continuous operation in harsh environments including HVAC controllers and industrial gateways |
Applications
| Industrial Sensor Calibration | Power Supply Configuration |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog temperature and pressure sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during boot or recalibration; no real-time timing constraints. Use Value: Eliminates need for external trimming potentiometers; enables field recalibration with traceable, tamper-resistant values. | Use Scenario: Holding output voltage/current setpoints, protection thresholds, and startup sequences in digitally controlled AC/DC power supplies. IC Role / Device Role / Timing Role: Configuration memory read at power-on reset; write access only during service mode or firmware updates. Use Value: Allows end-user customization without hardware changes; WP pin prevents runtime corruption during load transients. |
| Firmware Parameter Backup | Embedded System State Logging |
Use Scenario: Preserving user preferences (display brightness, language, network settings) across reboots in medical diagnostic equipment UIs. IC Role / Device Role / Timing Role: Low-frequency, infrequent write storage; accessed via I²C during initialization or settings save. Use Value: Ensures consistent UX after power loss; 1M endurance supports >10 years of daily settings changes. | Use Scenario: Recording fault timestamps, error codes, and operational hours in industrial motor drives for predictive maintenance. IC Role / Device Role / Timing Role: Write-on-event storage triggered by MCU interrupt; sequential logging with wraparound addressing. Use Value: Provides auditable history without DRAM volatility; 100-year retention guarantees data integrity over product lifetime. |
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 I²C EEPROM; 1.7–5.5V supply; 400 kHz max at 5V; identical 8-lead SOIC package | Higher speed at 5V but same 100 kHz rating at 2.7V; slightly lower standby current (1 µA @ 2.7V vs. 1.6 µA) | Preferred for new designs targeting wider voltage margin or higher-speed 5V systems; pinout and protocol identical |
| BR24G02NUX-10 | Rohm 2K I²C EEPROM; 1.6–5.5V supply; 1 MHz max (with fast-mode+ support); 8-pin TSSOP (same footprint as SOIC but thinner) | Supports faster bus speeds and lower minimum voltage; TSSOP offers smaller board area but different thermal profile | Best for space-constrained, high-density layouts where thermal dissipation is managed; requires layout review for soldering reliability |
Compared with M24C02-RMN6TP and BR24G02NUX-10, AT24C02N-10SI-2.7 offers proven industrial qualification, consistent 100 kHz performance at 2.7V, and seamless drop-in compatibility in legacy SOIC-based designs - making it ideal for cost-sensitive, volume-manufactured industrial controls.
Availability
AT24C02N-10SI-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, power supply configuration, and firmware parameter backup requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AT24C02N-10SI-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 is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with broad industrial and automotive qualification programs.
The AT24Cxx family was designed specifically for reliable, low-power, I²C-based configuration and calibration storage in resource-constrained embedded systems - emphasizing endurance, voltage flexibility, and noise immunity.
FAQ
What is the memory organization of the AT24C02N-10SI-2.7?
The AT24C02N-10SI-2.7 contains 2048 bits organized as 256 words of 8 bits each, internally structured as 32 pages × 8 bytes. It uses an 8-bit word address for random access and supports both byte-write and 8-byte page-write operations. This layout minimizes I²C transaction overhead when updating multi-byte parameters like calibration coefficients in the AT24C02N-10SI-2.7.
Does the AT24C02N-10SI-2.7 support I²C clock stretching?
No, the AT24C02N-10SI-2.7 does not implement clock stretching. It relies on fixed internal timing for acknowledge and data output, with tAA (address-to-data-valid) specified at ≤4.5 µs at 2.7V. Host controllers must adhere to standard I²C timing budgets and allow for the full 10 ms write cycle before issuing subsequent commands to the AT24C02N-10SI-2.7.
How is device addressing configured on the AT24C02N-10SI-2.7?
The AT24C02N-10SI-2.7 uses hard-wired A0, A1, and A2 pins (all internally grounded per datasheet) to fix its 3-bit device address portion. Combined with the mandatory 1010 prefix, this yields a base 7-bit address of 0x50. Up to eight AT24C02N-10SI-2.7 devices can coexist on one I²C bus by externally biasing A0–A2 to unique combinations - a feature confirmed in the AT24C02N-10SI-2.7 device addressing section.
Can the AT24C02N-10SI-2.7 be used in a 1.8V system?
No - the AT24C02N-10SI-2.7 is rated for 2.7V to 5.5V operation only. While the broader AT24C02 family includes -1.8 suffix variants (e.g., AT24C02N-10SI-1.8), the -2.7 suffix explicitly denotes the 2.7V minimum threshold. Using the AT24C02N-10SI-2.7 below 2.7V risks data corruption, failed writes, or noncompliant I²C signaling.
What is the function of the WP pin on the AT24C02N-10SI-2.7?
The WP (Write Protect) pin on the AT24C02N-10SI-2.7 provides hardware-level write inhibition. When pulled high to VCC, it disables all write operations to the entire 2K memory array; when pulled low to GND, full read/write functionality is restored. This feature prevents accidental overwrites during power-up, brownout, or firmware errors - a critical safeguard in the AT24C02N-10SI-2.7's industrial applications.
AT24C02N-10SI-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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C02N-10SI-2.7 FAQ
1.How can I place an order for AT24C02N-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02N-10SI-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-10SI-2.7 reliable?
The price and inventory of AT24C02N-10SI-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-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C02N-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02N-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02N-10SI-2.7?
AT24C02N-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02N-10SI-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-10SI-2.7?
For technical support, including AT24C02N-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02N-10SI-2.7 requirements.
6.How does Aetrix verify that AT24C02N-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C02N-10SI-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-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C02N-10SI-2.7?
All AT24C02N-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02N-10SI-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-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT24C02N-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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