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Microchip Technology 24AA02T-I/MC
- Part No.:
- 24AA02T-I/MC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
24AA02T-I/MC.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,035
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Product details
Overview
24AA02T-I/MC from Microchip Technology is a 2-Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, operating from 1.7V to 5.5V with 400 kHz max clock frequency, 1 µA standby current, and industrial temperature range (–40°C to +85°C). It features hardware write-protection via the WP pin, 8-byte page write buffer, and Schmitt-trigger inputs for noise immunity - used in embedded system configuration storage and device identity retention.
For engineers reviewing the 24AA02T-I/MC datasheet, 24AA02T-I/MC pinout, 24AA02T-I/MC application, or 24AA02T-I/MC equivalent, key selection criteria include low-voltage operation down to 1.7V, I²C bus compatibility at 400 kHz, factory-programmable MAC address capability, hardware write-protect functionality, and DFN-8 wettable flanks package suitability for automated optical inspection.
Technical Context
The 24AA02T-I/MC implements a two-wire I²C interface with fixed 7-bit slave address (1010xxx) and R/W bit control, supporting byte and page write modes with self-timed erase/write cycles. Its internal architecture includes an 8-byte page latch, EEPROM array with >1 million endurance cycles, and HV generator for programming.
It uses Schmitt-trigger inputs on SDA and SCL with 50 ns spike suppression and slope-controlled outputs to minimize ground bounce. The device does not use A0–A2 pins - they are unconnected - and relies solely on the WP pin for hardware-level write inhibition across the full 256-byte memory space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for storing MAC addresses, calibration data, or boot configuration in space-constrained systems |
| VCC Range | 1.7V to 5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level shifting |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V; 100 kHz at 1.7V ≤ VCC < 2.5V - ensures reliable timing across wide supply range |
| Write Cycle Time | 5 ms maximum - defines minimum interval between write commands; supports ACK polling for bus efficiency |
| Endurance | 1,000,000 erase/write cycles - guarantees long-term reliability in field-updatable systems |
| Data Retention | 200 years at +85°C - ensures persistent storage of critical identifiers over product lifetime |
| ESD Protection | >4,000V HBM - provides robust handling margin during board assembly and end-user service |
Pinout & Package
24AA02T-I/MC is supplied in an 8-lead DFN package with wettable flanks (MC suffix), measuring 2 mm × 3 mm × 0.75 mm. This package supports automated optical inspection (AOI) and offers improved solder joint reliability in high-volume manufacturing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection; may be left floating or tied to VSS/VCC - no effect on device addressing |
| A1 | Address Input | No internal connection; unused in 24AA02 family - eliminates external address resistor requirements |
| A2 | Address Input | No internal connection; simplifies PCB layout by removing need for address strapping |
| VSS | Ground | Reference return path for all digital and analog circuitry; must be low-impedance for noise immunity |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up; transmits/receives addresses and data per I²C protocol |
| SCL | Serial Clock Input | Input-only clock line synchronized to host controller; controls timing of all data transfers |
| WP | Write-Protect Input | Hardware-enforced memory lock: tied to VCC disables all writes while permitting reads |
| VCC | Power Supply | Single-supply input supporting 1.7V–5.5V; powers internal logic, EEPROM array, and HV generator |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed MAC address | Contains IEEE-compliant 48-bit EUI-48™ address pre-written in upper 6 bytes - eliminates post-manufacture programming step |
| Wettable flanks DFN package | Exposed side metallization enables AOI verification of solder fillet formation - improves yield in automated SMT lines |
| Hardware write protection | WP pin directly gates all write operations - prevents accidental firmware corruption during power transitions or noise events |
| Low-power operation | 1 µA max standby current at I-temp - extends battery life in always-on IoT edge nodes and portable diagnostics tools |
| I²C bus noise immunity | Schmitt-trigger inputs + 50 ns input filter - maintains communication integrity in electrically noisy automotive or industrial environments |
Applications
| Network Interface Configuration | Industrial Sensor Calibration Storage |
|---|---|
Use Scenario: Storing unique MAC address and network parameters in Ethernet/Wi-Fi modules for plug-and-play deployment. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing IEEE EUI-48™ identifier and static IP settings at boot. Use Value: Eliminates host MCU flash programming overhead and ensures deterministic MAC assignment across production batches. | Use Scenario: Retaining sensor-specific calibration coefficients and linearization tables in factory-calibrated pressure or temperature transducers. IC Role / Device Role / Timing Role: Persistent parameter store accessed during power-up initialization and field recalibration routines. Use Value: Maintains measurement accuracy over 200-year data retention window without requiring backup power or supercapacitors. |
| Medical Device Identity Management | Automotive Body Control Module Settings |
Use Scenario: Securing UDI (Unique Device Identification) and regulatory compliance data in FDA-cleared diagnostic equipment. IC Role / Device Role / Timing Role: Tamper-resistant identity vault with hardware write-lock preventing unauthorized reconfiguration. Use Value: Meets IEC 62304 traceability requirements through immutable factory-programmed identifiers and revision history. | Use Scenario: Storing user preferences (seat position, mirror angle, lighting profiles) and fault log history in automotive BCMs. IC Role / Device Role / Timing Role: Low-power nonvolatile memory accessed during ignition-on sequence and sleep-mode wake events. Use Value: Enables <1 µA system standby current while preserving personalized settings across vehicle battery disconnects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA02E48T-I/OT | Same 2-Kbit capacity and I²C interface, but in SOT-23-5 package with different marking and lead count; lacks wettable flanks | Preferred for ultra-dense layouts where 2×3 mm DFN footprint is prohibitive; requires different stencil design and reflow profile | Select when board area is constrained and AOI of solder joints is not required |
| AT24C02D-SSHM-T | 2-Kbit I²C EEPROM from Microchip (formerly Atmel); supports 1 MHz clock at 1.7V–5.5V; no factory MAC address | Used where higher-speed writes are needed and MAC address is programmed externally; lacks EUI-48™ preprogramming | Select when application requires faster 1 MHz I²C operation and host MCU handles MAC provisioning |
Compared with 24AA02T-I/MC, the 24AA02E48T-I/OT trades wettable flanks and DFN manufacturability for smaller footprint, while the AT24C02D-SSHM-T offers higher speed but requires external MAC management - making 24AA02T-I/MC optimal for AOI-capable, MAC-critical, industrial-grade designs.
Availability
24AA02T-I/MC is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device UDI storage, and automotive body control module settings requiring stable component supply across extended product lifecycles.
Supply support for 24AA02T-I/MC 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 Inc. is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The 24AA02 family is designed specifically for secure, factory-programmed device identity and configuration storage in resource-constrained embedded systems - emphasizing data integrity, low-power operation, and AEC-Q100-compliant reliability.
FAQ
What is the function of the A0, A1, and A2 pins on the 24AA02T-I/MC?
The A0, A1, and A2 pins on the 24AA02T-I/MC are not internally connected and serve no functional purpose. They may be left floating or tied to VSS or VCC without affecting device operation or addressing - this simplifies PCB routing and eliminates external address resistors required by larger EEPROM families.
Does the 24AA02T-I/MC include a factory-programmed MAC address?
Yes, the 24AA02T-I/MC contains a factory-programmed, globally unique 48-bit IEEE EUI-48™ MAC address stored in its upper 6 bytes (addresses 0xFA–0xFF). This preprogrammed identifier is permanently written and cannot be altered, enabling immediate network readiness without host MCU programming.
What package type does the 24AA02T-I/MC use, and why is it significant?
The 24AA02T-I/MC uses an 8-lead DFN package with wettable flanks (suffix MC). This package enables automated optical inspection (AOI) of solder joints - a critical advantage for high-reliability industrial and automotive manufacturing where solder void detection is mandatory.
How does hardware write protection work on the 24AA02T-I/MC?
Hardware write protection on the 24AA02T-I/MC is controlled by the WP pin: when tied to VCC, all write operations (byte and page) to the entire 256-byte memory array are disabled, while read operations remain fully functional - providing fail-safe prevention of accidental or malicious firmware corruption.
What is the maximum I²C clock frequency supported by the 24AA02T-I/MC?
The 24AA02T-I/MC supports up to 400 kHz I²C clock frequency when VCC is 2.5V or higher. At supply voltages between 1.7V and 2.5V, the maximum clock frequency is reduced to 100 kHz - a voltage-dependent timing constraint verified in the official Microchip DS20001709N datasheet.
24AA02T-I/MC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x3)
24AA02T-I/MC FAQ
1.How can I place an order for 24AA02T-I/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA02T-I/MC 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 24AA02T-I/MC reliable?
The price and inventory of 24AA02T-I/MC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA02T-I/MC is usually 5 days.
3.What payment methods are accepted for 24AA02T-I/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA02T-I/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA02T-I/MC?
24AA02T-I/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA02T-I/MC 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 24AA02T-I/MC?
For technical support, including 24AA02T-I/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA02T-I/MC requirements.
6.How does Aetrix verify that 24AA02T-I/MC is sourced from the original manufacturer or authorized distributors?
All 24AA02T-I/MC 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 24AA02T-I/MC meets industry standards.
7.What is the process for return or replacement of 24AA02T-I/MC?
All 24AA02T-I/MC units undergo pre-shipment inspection (PSI). If there is an issue with 24AA02T-I/MC, 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 24AA02T-I/MC part is unused and in its original packaging.
Return procedure for 24AA02T-I/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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