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Microchip Technology AT24C02-10PI
- Part No.:
- AT24C02-10PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C02-10PI.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,760
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Product details
Overview
AT24C02-10PI from Microchip Technology (formerly Atmel) is a 2 Kbit (256 × 8) I²C-compatible serial EEPROM with industrial temperature range (–40°C to +85°C), 2.7V to 5.5V supply operation, 100 kHz I²C interface speed, hardware write protection via WP pin, and 8-pin PDIP package. It serves as nonvolatile configuration storage in microcontroller-based systems requiring robust data retention and low-power standby.
For engineers reviewing the AT24C02-10PI datasheet, AT24C02-10PI pinout, AT24C02-10PI application, or AT24C02-10PI equivalent, key selection criteria include its 2K density, industrial-grade reliability (1 million write cycles, 100-year data retention), 2.7V–5.5V voltage flexibility, page-write capability (8-byte pages), and compatibility with standard 2-wire I²C bus timing at 100 kHz.
Technical Context
The AT24C02-10PI implements a two-wire (I²C) serial interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. It uses hardwired A0–A2 address pins to support up to eight devices on a single bus, with device addressing compliant to I²C protocol standards.
Internally organized as 32 pages of 8 bytes each, it supports byte-write and page-write operations with self-timed internal write cycles (max 10 ms). The WP pin enables hardware-level write protection across the full 2K array when pulled high, while standby current is as low as 1.6 µA at 2.7V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 words × 8 bits); sufficient for firmware calibration tables, device ID storage, or small configuration registers. |
| Supply Voltage Range | 2.7V to 5.5V; enables direct interfacing with 3.3V and 5V microcontrollers without level-shifting. |
| I²C Clock Frequency | 100 kHz (at 2.7V–5.5V); ensures reliable communication in electrically noisy industrial environments. |
| Write Cycle Time | Max 10 ms; defines minimum interval between successive write commands; requires polling or timeout handling in firmware. |
| Endurance | 1 million write cycles per memory location; supports frequent parameter updates in field-deployed equipment. |
| Data Retention | 100 years at +25°C; guarantees long-term integrity of stored settings without battery backup. |
| Operating Temperature | –40°C to +85°C; qualified for industrial control, automotive body electronics, and outdoor sensor nodes. |
| Standby Current | 1.6 µA at 2.7V; minimizes power draw in always-on embedded systems with infrequent EEPROM access. |
Pinout & Package
AT24C02-10PI is supplied in an 8-pin PDIP (Plastic Dual Inline Package), 0.300" wide, with JEDEC-standard pinout and through-hole mounting compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired address bit; enables multi-device I²C bus configuration (up to 8 AT24C02-10PI units). |
| A1 | Device Address Input | Second hardwired address bit; used with A0 and A2 to form unique 3-bit device address. |
| A2 | Device Address Input | Third hardwired address bit; all three (A0–A2) determine slave address (0x50–0x57). |
| GND | Ground Reference | System common return path; must be low-impedance to ensure stable I²C signaling and noise immunity. |
| VCC | Power Supply | 2.7V–5.5V input; decoupling capacitor (0.1 µF) required near pin for transient suppression. |
| WP | Write Protect Control | Active-high hardware lock; disables all write operations when tied to VCC, preventing accidental overwrites. |
| SCL | Serial Clock Input | Master-generated clock; Schmitt-triggered for robust edge detection in noisy environments. |
| SDA | Serial Data I/O | Open-drain bidirectional line; requires external pull-up resistor (typically 4.7 kΩ) to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| 2-wire I²C Interface | Reduces PCB routing complexity vs. SPI; shares bus with other I²C peripherals using only SDA/SCL lines. |
| Hardware Write Protection (WP) | Prevents firmware corruption during power brownouts or reset glitches without software intervention. |
| 8-byte Page Write Mode | Enables burst writes within a page, reducing I²C transaction overhead and improving effective write throughput. |
| Schmitt Trigger Inputs | Improves noise margin on SCL and address pins, allowing reliable operation in electrically harsh industrial settings. |
| Low Standby Current (1.6 µA) | Extends battery life in portable or energy-harvesting systems where EEPROM is powered continuously. |
| Industrial Temperature Range | Validates operation across thermal extremes encountered in factory automation, HVAC, and transportation electronics. |
Applications
| Smart Metering | Industrial PLC Modules |
|---|---|
|
Use Scenario: Storing tariff schedules, meter calibration constants, and tamper-event logs in electricity/water/gas meters. IC Role / Device Role / Timing Role: Nonvolatile configuration and event logging storage with guaranteed 100-year data retention. Use Value: Eliminates need for battery-backed SRAM; withstands repeated power cycling and extended field deployment. |
Use Scenario: Holding I/O mapping tables, PID tuning parameters, and firmware update flags in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent parameter storage accessible via microcontroller's I²C peripheral during runtime or boot. Use Value: Enables field reconfiguration without firmware reflashing; WP pin prevents unintended changes during diagnostics. |
| Automotive Body Control Units | Medical Diagnostic Devices |
|
Use Scenario: Saving seat/mirror position presets, lighting profiles, and error-code history in vehicle body modules. IC Role / Device Role / Timing Role: Industrial-grade EEPROM interfaced directly to 3.3V MCU I²C bus with no level shifters. Use Value: Meets AEC-Q100 stress requirements via industrial temp rating and 1M-cycle endurance for service-life updates. |
Use Scenario: Archiving calibration coefficients, usage counters, and regulatory compliance timestamps in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure, low-power nonvolatile memory for traceable device history and FDA-mandated audit trails. Use Value: WP pin enforces write-lock during normal operation; 100-year retention satisfies medical device long-term recordkeeping mandates. |
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 density, 100 kHz I²C, industrial temp, but uses TSSOP-8 package and has slightly higher standby current (2.5 µA @ 2.7V). | Requires PCB layout change due to TSSOP footprint; identical functional behavior in I²C read/write sequences. | Select when surface-mount assembly is preferred and board space is constrained. |
| ON Semiconductor CAT24C02WI-GT3 | Pin-compatible 2K EEPROM with same PDIP-8 package and 2.7V–5.5V range, but rated for 400 kHz max clock (only at 5V) and lower endurance (100k cycles). | Not suitable for high-frequency or high-endurance use cases; acceptable for cost-sensitive consumer applications. | Choose only for non-critical, low-write-volume designs where cost is primary and industrial reliability is not required. |
Compared with M24C02-RMN6TP and CAT24C02WI-GT3, the AT24C02-10PI offers superior endurance (1M vs. 100k cycles), lower standby current at 2.7V, and guaranteed 100 kHz operation across its full voltage range - making it optimal for industrial and automotive deployments demanding long-term reliability.
Availability
AT24C02-10PI is available at Aetrix Electronics and suitable for industrial automation, smart metering, and automotive body electronics requiring stable component supply across extended product lifecycles.
Supply support for AT24C02-10PI 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 AT24C02-10PI belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-effective, low-power, nonvolatile data storage in resource-constrained embedded systems.
FAQ
What is the maximum I²C clock frequency supported by the AT24C02-10PI?
The AT24C02-10PI supports up to 100 kHz I²C clock frequency across its entire specified supply voltage range (2.7V to 5.5V). While some variants in the AT24Cxx family support 400 kHz at 5V, the AT24C02-10PI is characterized and guaranteed for 100 kHz operation only - a design choice prioritizing noise immunity and stability in industrial environments.
Does the AT24C02-10PI require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C02-10PI requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. A typical value is 4.7 kΩ to VCC, selected based on bus capacitance and desired rise time; omission will prevent proper I²C communication and cause bus lockup.
How does the Write Protect (WP) pin function on the AT24C02-10PI?
When the WP pin of the AT24C02-10PI is driven high (to VCC), all write operations - including byte writes, page writes, and write-enable sequences - are blocked. When WP is grounded, normal read and write operations proceed. This hardware-level protection operates independently of firmware state and remains active during power transitions.
Can the AT24C02-10PI be used with a 3.3V microcontroller without level shifting?
Yes, the AT24C02-10PI is fully compatible with 3.3V systems: its 2.7V–5.5V supply range covers 3.3V operation, and its I²C inputs meet VIH(min) = 0.7×VCC (≥2.31V) and VIL(max) = 0.3×VCC (≤0.99V), ensuring reliable logic-level recognition from standard 3.3V GPIOs.
What is the page size and maximum write length per transaction for the AT24C02-10PI?
The AT24C02-10PI has an 8-byte page size and supports page writes of up to 8 bytes within a single I²C transaction. Attempting to write beyond the page boundary causes automatic rollover to the start of the same page, potentially overwriting earlier data unless managed by firmware.
AT24C02-10PI 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C02-10PI FAQ
1.How can I place an order for AT24C02-10PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02-10PI 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 reliable?
The price and inventory of AT24C02-10PI 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 is usually 5 days.
3.What payment methods are accepted for AT24C02-10PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02-10PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02-10PI?
AT24C02-10PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02-10PI 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?
For technical support, including AT24C02-10PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02-10PI requirements.
6.How does Aetrix verify that AT24C02-10PI is sourced from the original manufacturer or authorized distributors?
All AT24C02-10PI 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 meets industry standards.
7.What is the process for return or replacement of AT24C02-10PI?
All AT24C02-10PI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02-10PI, 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 part is unused and in its original packaging.
Return procedure for AT24C02-10PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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