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Microchip Technology 24AA16-I/MC
- Part No.:
- 24AA16-I/MC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
24AA16-I/MC.pdf
- Description:
- IC EEPROM 16KBIT I2C 400KHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:240
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Product details
Overview
24AA16-I/MC from Microchip Technology Inc. is a 16-Kbit I²C-compatible serial EEPROM organized as eight 256 × 8-bit blocks, operating from 1.7V to 5.5V with 400 kHz max clock frequency (100 kHz below 2.5V), 1 μA standby current, and hardware write-protection via the WP pin. It supports industrial temperature range (–40°C to +85°C) and is packaged in an 8-lead DFN (MC).
For engineers reviewing the 24AA16-I/MC datasheet, 24AA16-I/MC pinout, 24AA16-I/MC application, or 24AA16-I/MC equivalent, this page delivers verified electrical specs, I²C timing constraints, page-write buffer behavior, noise-suppression features (Schmitt-trigger inputs, slope control), and real-world use cases in embedded configuration storage and sensor calibration.
Technical Context
The 24AA16-I/MC implements a two-wire I²C slave interface with fixed 4-bit device code '1010' and 3-bit block-select addressing, enabling access to eight 256-byte memory blocks. Its internal Address Pointer auto-increments during sequential reads and page writes.
It uses on-chip high-voltage generation for EEPROM programming, supports acknowledge polling to detect write completion, and incorporates Schmitt-trigger inputs with ≥50 ns spike suppression and output slope control to minimize ground bounce-critical for noisy industrial bus environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 bytes), organized as eight 256 × 8-bit blocks - enables modular firmware parameter partitioning. |
| Supply Voltage Range | 1.7V to 5.5V - supports 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 low-power and legacy I²C systems. |
| Page Write Buffer | 16-byte buffer - reduces write transaction count by up to 16× versus byte-write mode, improving system throughput. |
| Write Cycle Time | 5 ms maximum (byte or page) - defines worst-case blocking time for host firmware during nonvolatile updates. |
| Endurance & Retention | 1 million erase/write cycles; >200 years data retention - validated for long-life deployment in unattended equipment. |
| ESD Protection | >4 kV HBM - provides robustness against handling and board-level electrostatic discharge events. |
Pinout & Package
8-Lead DFN package (MC), 2 mm × 3 mm body, exposed pad (optional VSS connection). Pin 1 marked by notch or dot; top view orientation matches Microchip Drawing C04-059-MC Rev G.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Primary return path for all internal logic and EEPROM programming current; exposed pad may be connected here for thermal and EMI improvement. |
| WP | Hardware write-protect input | Logic-high disables all write operations (000h–7FFh); tied low for full read/write access - eliminates software-only protection vulnerabilities. |
| SCL | Serial clock input | Asynchronous master-generated clock synchronizing all address/data transfers; Schmitt-triggered for noise immunity on long traces. |
| SDA | Bidirectional data I/O | Open-drain line requiring external pull-up; carries slave address, word address, and data; slope-controlled to limit di/dt-induced ground bounce. |
| VCC | Power supply | Supplies core logic and high-voltage pump; decoupling capacitor (0.1 μF) required within 5 mm for stable write operation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 1.7V | Enables direct integration into battery-powered or energy-harvesting systems without voltage boost circuitry. |
| 16-byte page write buffer | Reduces I²C bus occupancy by consolidating multiple byte writes into one Stop-initiated transaction, lowering host CPU overhead. |
| Schmitt-trigger inputs with 50 ns spike suppression | Rejects fast transients on SDA/SCL lines, preventing spurious Start/Stop detection in electrically noisy industrial enclosures. |
| Self-timed erase/write cycle | Eliminates need for host firmware to manage timing delays - simplifies driver development and improves reliability under voltage variation. |
| Hardware write-protect (WP pin) | Provides tamper-resistant configuration lock during field operation, independent of firmware state or power cycling. |
Applications
| Industrial Sensor Calibration Storage | Embedded Firmware Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed at power-up; retains values across cold starts and brownouts. Use Value: Eliminates recalibration after firmware updates; 1.7V operation ensures data integrity during low-battery brownout conditions. | Use Scenario: Holding user-modifiable settings (network IP, display brightness, alarm thresholds) in medical infusion pumps. IC Role / Device Role / Timing Role: I²C-configurable persistent storage with hardware write-protection enabled during normal operation. Use Value: Prevents accidental overwrites during runtime; 1 μA standby current extends battery life in portable devices. |
| Smart Meter Tamper-Proof Logs | Automotive Body Control Module (BCM) Settings |
Use Scenario: Recording meter tamper events (cover removal, magnetic interference) with timestamped entries in utility smart meters. IC Role / Device Role / Timing Role: High-endurance log buffer written in page mode; WP pin asserted only during secure firmware update windows. Use Value: 1M-cycle endurance supports >10 years of daily logging; >200-year retention guarantees audit trail validity over product lifetime. | Use Scenario: Saving seat/mirror position presets and lighting profiles in automotive BCMs compliant with AEC-Q100 Grade 2. IC Role / Device Role / Timing Role: Automotive-qualified EEPROM storing user preferences with guaranteed operation from –40°C to +85°C. Use Value: Meets extended temperature requirements without derating; RoHS-compliant DFN package supports automated reflow assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC16B-I/MC | Requires minimum 2.5V VCC; no 1.7V operation; identical pinout and 400 kHz timing. | Not suitable for 1.8V systems; otherwise drop-in for legacy 3.3V/5V designs with tighter voltage margin. | Select when supply rails are stable ≥2.5V and cost sensitivity outweighs ultra-low-voltage flexibility. |
| AT24C16C-MAHM-T | 1.7V–5.5V range, 1 MHz I²C, 16-byte page, but uses different slave address (1010xxx) and lacks AEC-Q100 qualification. | Higher speed useful in bandwidth-constrained systems; no automotive qualification limits use to industrial/commercial grade. | Choose for faster write throughput where AEC-Q100 is not mandated and address conflict analysis confirms compatibility. |
Compared with 24LC16B-I/MC, the 24AA16-I/MC enables true 1.8V system integration and offers broader voltage margin; versus AT24C16C-MAHM-T, it provides AEC-Q100 qualification and proven interoperability in Microchip-based designs, albeit at lower max clock rate.
Availability
24AA16-I/MC is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded configuration storage, smart meter logging, and automotive BCM settings requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 24AA16-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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products, with global manufacturing and quality certifications including ISO 9001 and IATF 16949.
The 24AA16 belongs to Microchip's 24XX16 family of I²C EEPROMs, designed specifically for reliable, low-power, long-life nonvolatile storage in space-constrained embedded systems across industrial, automotive, and consumer applications.
FAQ
What is the maximum I²C clock frequency supported by the 24AA16-I/MC?
The 24AA16-I/MC supports up to 400 kHz 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 to ensure timing margin compliance. This dual-speed capability allows seamless integration into both legacy and low-voltage systems without redesign.
Does the 24AA16-I/MC require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA16-I/MC requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values are 10 kΩ for 100 kHz operation and 2 kΩ for 400 kHz - selected based on bus capacitance and rise-time requirements per I²C specification.
How does the WP pin function on the 24AA16-I/MC?
The WP (Write-Protect) pin on the 24AA16-I/MC disables all write operations-including byte and page writes-when held high (VCC). When tied low (VSS), full read/write access is enabled. This hardware-level protection operates independently of firmware state and remains active across power cycles, ensuring configuration integrity.
What is the page write buffer size of the 24AA16-I/MC, and how does it affect write performance?
The 24AA16-I/MC has a 16-byte page write buffer. When writing contiguous data, this allows up to 16 bytes to be loaded into the buffer and committed to memory with a single Stop condition, reducing I²C transaction overhead by up to 16× compared to individual byte writes - significantly accelerating bulk configuration updates.
Is the 24AA16-I/MC qualified for automotive applications?
No, the 24AA16-I/MC is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, Microchip offers the 24AA16-E/MC (extended temp) and pin-compatible AEC-Q100 qualified variants like the 24AA16T-I/MC - verify part number suffix and qualification status before automotive deployment.
24AA16-I/MC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K 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)
24AA16-I/MC FAQ
1.How can I place an order for 24AA16-I/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA16-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 24AA16-I/MC reliable?
The price and inventory of 24AA16-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 24AA16-I/MC is usually 5 days.
3.What payment methods are accepted for 24AA16-I/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA16-I/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA16-I/MC?
24AA16-I/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA16-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 24AA16-I/MC?
For technical support, including 24AA16-I/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA16-I/MC requirements.
6.How does Aetrix verify that 24AA16-I/MC is sourced from the original manufacturer or authorized distributors?
All 24AA16-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 24AA16-I/MC meets industry standards.
7.What is the process for return or replacement of 24AA16-I/MC?
All 24AA16-I/MC units undergo pre-shipment inspection (PSI). If there is an issue with 24AA16-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 24AA16-I/MC part is unused and in its original packaging.
Return procedure for 24AA16-I/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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