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Microchip Technology AT24C02-10PI-2.7
- Part No.:
- AT24C02-10PI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C02-10PI-2.7.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,883
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Product details
Overview
AT24C02-10PI-2.7 from Microchip Technology (formerly Atmel) is a 2 Kbit (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 commonly used in industrial sensor calibration storage and power-meter firmware parameter backup.
For engineers reviewing the AT24C02-10PI-2.7 datasheet, AT24C02-10PI-2.7 pinout, AT24C02-10PI-2.7 application, or AT24C02-10PI-2.7 equivalent, key selection criteria include its 2.7V–5.5V supply range, 8-pin SOIC/TSSOP/PDIP package compatibility, I²C address flexibility (A0–A2), page-write capability (8-byte pages), and industrial temperature rating (−40°C to +85°C).
Technical Context
The AT24C02-10PI-2.7 implements a two-wire I²C interface with open-drain SDA/SCL lines, Schmitt-triggered inputs for noise immunity, and bi-directional data transfer using acknowledge polling. Its internal memory is organized as 32 pages of 8 bytes each, requiring an 8-bit word address for random access.
Write protection is enforced by the dedicated WP pin: tied to VCC, it locks the full 2K array; tied to GND, full read/write operation is enabled. The device enters low-power standby mode after STOP condition receipt or power-up, drawing only 1.6 µA typical at 2.7V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 words × 8 bits), sufficient for storing configuration registers or small firmware patches |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration with 3.3V microcontrollers and legacy 5V systems without level shifting |
| I²C Clock Frequency | 100 kHz max - compatible with standard-mode I²C controllers and robust against timing margin violations |
| Page Write Size | 8 bytes per page - allows efficient burst writes while minimizing bus occupancy and host CPU overhead |
| Write Endurance | 1 million cycles - supports frequent field updates such as energy meter tariff tables or sensor offset recalibration |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unattended infrastructure deployments |
| Operating Temperature | −40°C to +85°C - certified for industrial-grade operation in harsh environments including factory automation and outdoor meters |
Pinout & Package
AT24C02-10PI-2.7 is supplied in an 8-lead JEDEC SOIC package (package code 8S1), measuring 4.9 mm × 3.9 mm × 1.75 mm, with 1.27 mm lead pitch and gull-wing leads. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hard-wired address bit enabling up to eight AT24C02 devices on one I²C bus; must match external pull-up/down for correct addressing |
| A1 | Device Address Input | Second hard-wired address bit; used with A0 and A2 to form 3-bit device address (0x50–0x57) |
| A2 | Device Address Input | Third hard-wired address bit; all three (A0–A2) are active for AT24C02, unlike larger family members |
| GND | Ground Reference | System ground return path; must be low-impedance and shared with host MCU to avoid I²C communication errors |
| VCC | Power Supply | Primary supply input (2.7–5.5V); requires local 0.1 µF ceramic decoupling placed within 5 mm of the pin |
| WP | Write Protect Control | Active-high hardware lock: logic high disables all write operations to the entire 2K memory array |
| SCL | Serial Clock Input | Master-generated clock signal; open-drain, requires external pull-up; defines timing for data sampling on SDA |
| SDA | Serial Data I/O | Bi-directional open-drain data line; shared across multiple I²C devices; requires external pull-up resistor (typically 2.2–10 kΩ) |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation (2.7V–5.5V) | Enables direct interfacing with 3.3V MCUs and mixed-voltage systems without voltage translation circuitry |
| Hardware write protection (WP pin) | Prevents accidental or malicious overwrites during power transients or firmware glitches - no software dependency required |
| 8-byte page write capability | Reduces I²C transaction count by up to 8× versus byte-wise writes, lowering bus contention and host processing load |
| Schmitt-triggered inputs | Rejects noise spikes ≤100 ns and ensures clean signal interpretation in electrically noisy industrial enclosures |
| 100-year data retention | Eliminates need for periodic refresh or backup power in battery-free applications like smart utility meters |
Applications
| Industrial Sensor Calibration | Smart Energy Metering |
|---|---|
Use Scenario: Storing factory-trimmed ADC gain/offset coefficients and temperature compensation lookup tables in pressure or humidity sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed once at power-up; no real-time timing constraints. Use Value: Enables plug-and-play sensor replacement without host reprogramming; retains calibration across 10+ year field life. |
Use Scenario: Holding tariff schedules, billing cycle counters, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Secure, infrequently written parameter store; WP pin prevents unauthorized rate changes during live grid operation. Use Value: Meets IEC 62056 compliance for secure meter data integrity; withstands 1M+ write cycles over 20-year service life. |
| Embedded System Configuration | Automotive Body Control Module |
Use Scenario: Saving user preferences (display brightness, language, network settings) in medical diagnostic equipment and POS terminals. IC Role / Device Role / Timing Role: Low-bandwidth, event-driven storage; accessed only during boot or menu save actions. Use Value: Survives >100,000 power cycles; retains settings through battery removal or brownout events. |
Use Scenario: Recording door lock actuation history, mirror position presets, and lighting configuration in 12V automotive BCMs. IC Role / Device Role / Timing Role: Robust nonvolatile memory operating across −40°C to +85°C ambient; WP pin disabled during programming mode only. Use Value: Qualified for AEC-Q100 stress testing; immune to load-dump transients when properly decoupled. |
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 2 Kbit size, 2.5V–5.5V supply, 100 kHz I²C, but uses different device address mapping (0x50–0x57 vs. ST's 0x50–0x57 with A0/A1/A2) | Pin-compatible and functionally identical; differs only in endurance spec (400k vs. 1M cycles) and qualification grade | Select when cost sensitivity outweighs long-term field update requirements; verify WP behavior matches host firmware logic. |
| ON Semiconductor CAT24C02WI-GT3 | Identical 2 Kbit organization, 2.7V–5.5V range, and 100 kHz I²C, but offers enhanced ESD rating (4 kV HBM) and tighter tWR max (5 ms vs. 10 ms) | Better suited for portable/handheld devices exposed to handling ESD; faster write cycle reduces host wait time | Prefer for battery-powered or consumer-facing products where ESD robustness and responsiveness are prioritized. |
Compared with AT24C02-10PI-2.7, M24C02-RMN6TP trades endurance for cost, while CAT24C02WI-GT3 improves ESD immunity and write latency - both require validation of WP pin logic and I²C address decoding in existing firmware.
Availability
AT24C02-10PI-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, smart energy metering, embedded system configuration, and automotive body control module applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT24C02-10PI-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 a focus on reliability and long-term product support.
The AT24Cxx family was designed specifically for cost-sensitive, space-constrained embedded systems requiring robust, low-power serial EEPROM storage - especially in industrial, metering, and automotive applications.
FAQ
What is the maximum I²C clock frequency supported by AT24C02-10PI-2.7?
The AT24C02-10PI-2.7 supports up to 100 kHz I²C clock frequency under 2.7V–5.5V operation. This is specified in the AC Characteristics table for the -2.7 variant. It does not support 400 kHz - that speed is reserved for the 5.0V-only versions (e.g., AT24C02-10PI). Using >100 kHz may result in ACK failures or data corruption.
Does AT24C02-10PI-2.7 support partial page writes?
Yes, AT24C02-10PI-2.7 supports partial page writes: up to 8 bytes can be written in a single page-write transaction, starting at any byte address within a page boundary. If more than 8 bytes are sent, the address rolls over to the start of the same page, overwriting prior data - this behavior is documented in the Page Write section of the datasheet.
What is the function of the A0, A1, and A2 pins on AT24C02-10PI-2.7?
On AT24C02-10PI-2.7, A0, A1, and A2 are hard-wired device address inputs that determine the I²C slave address (0x50–0x57). All three are active - unlike larger variants (e.g., AT24C08), none are NC. They allow up to eight AT24C02 devices to share one I²C bus without address conflict.
How does the WP pin protect memory in AT24C02-10PI-2.7?
In AT24C02-10PI-2.7, the WP pin provides hardware-level write protection: when pulled high to VCC, it disables all write operations (byte and page) to the full 2K memory array. When pulled low to GND, normal read/write functionality is restored. No software command can override this state.
Is AT24C02-10PI-2.7 qualified for industrial temperature operation?
Yes, AT24C02-10PI-2.7 is explicitly rated for industrial temperature operation from −40°C to +85°C, as indicated by the "I" suffix in the part number and confirmed in the Ordering Information tables. This qualification covers all electrical specifications, endurance, and data retention claims under those conditions.
AT24C02-10PI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C02-10PI-2.7 FAQ
1.How can I place an order for AT24C02-10PI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02-10PI-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 AT24C02-10PI-2.7 reliable?
The price and inventory of AT24C02-10PI-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 AT24C02-10PI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C02-10PI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02-10PI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02-10PI-2.7?
AT24C02-10PI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02-10PI-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 AT24C02-10PI-2.7?
For technical support, including AT24C02-10PI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02-10PI-2.7 requirements.
6.How does Aetrix verify that AT24C02-10PI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C02-10PI-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 AT24C02-10PI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C02-10PI-2.7?
All AT24C02-10PI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02-10PI-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 AT24C02-10PI-2.7 part is unused and in its original packaging.
Return procedure for AT24C02-10PI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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