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Microchip Technology 24AA16T-I/MC16KVAO
- Part No.:
- 24AA16T-I/MC16KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
24AA16T-I/MC16KVAO.pdf
- Description:
- IC EEPROM 16KBIT I2C 100KHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,991
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Product details
Overview
24AA16T-I/MC16KVAO 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, 1 μA standby current, and industrial temperature range (–40°C to +85°C). It features hardware write-protection via the WP pin, 16-byte page write buffer, and Schmitt-trigger inputs for noise immunity - deployed in embedded system configuration storage, sensor calibration data retention, and power-fail-safe parameter backup.
For engineers reviewing the 24AA16T-I/MC16KVAO datasheet, 24AA16T-I/MC16KVAO pinout, 24AA16T-I/MC16KVAO application, or 24AA16T-I/MC16KVAO equivalent, key selection considerations include VCC compatibility down to 1.7V, I²C timing compliance at 400 kHz (100 kHz below 2.5V), WP-controlled full-array write protection, 5 ms max page write time, and SOIC-8 package footprint with verified pin mapping.
Technical Context
The 24AA16T-I/MC16KVAO functions as an I²C slave device with fixed 4-bit control code '1010' and 3-bit block-select addressing, supporting up to eight 256-word memory blocks. Its internal Address Pointer auto-increments during sequential reads and page writes, enabling efficient burst access within a 16-byte physical page boundary.
It implements on-chip HV generation for EEPROM programming, Schmitt-trigger inputs on SDA/SCL with ≥50 mV hysteresis, slope-controlled outputs to suppress ground bounce, and ACK polling for write-cycle completion detection - all while maintaining I²C bus protocol compliance including Start/Stop condition generation, data validity windows, and acknowledge timing per Table 1-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8), organized as eight 256-word blocks - enables modular firmware parameter partitioning and block-level access control. |
| VCC Range | 1.7V to 5.5V - supports direct interface with low-voltage microcontrollers (e.g., 1.8V logic) without level-shifting. |
| Max Clock Frequency | 400 kHz (≥2.5V), 100 kHz (<2.5V) - defines maximum I²C bus throughput; requires pull-up resistor scaling (e.g., 2 kΩ for 400 kHz). |
| Write Cycle Time | ≤5 ms (byte or page) - determines minimum delay between write commands; page write allows 16-byte atomic updates. |
| Endurance & Retention | 1 million erase/write cycles, >200 years data retention - suitable for field-updatable calibration tables and infrequently modified configuration registers. |
| ESD Protection | >4,000 V HBM - ensures robustness in handling-sensitive industrial assembly and board-level test environments. |
| Temperature Range | Industrial: –40°C to +85°C - qualified for operation in automotive body control modules and industrial PLC I/O expansion cards. |
Pinout & Package
24AA16T-I/MC16KVAO is packaged in an 8-lead SOIC (SN) with 3.90 mm body width, JEDEC MS-012AC compliant footprint, and exposed pad not present. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS (Pin 4) | Ground reference | Must be connected to system GND; serves as return path for all internal logic and EEPROM programming currents. |
| WP (Pin 7) | Hardware write-protect input | Tie to VSS for full read/write access; tie to VCC to disable all write operations - prevents accidental overwrites during power transitions. |
| SCL (Pin 6) | Serial clock input | Open-drain input synchronized to master I²C clock; must be pulled up externally (e.g., 2 kΩ to VCC for 400 kHz). |
| SDA (Pin 5) | Serial data bidirectional I/O | Open-drain bidirectional line for address/data transfer; requires same external pull-up as SCL; changes only during SCL low. |
| VCC (Pin 8) | Power supply | Supplies core logic and EEPROM programming voltage; bypass capacitor (0.1 μF ceramic) required adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation (1.7V min) | Enables direct integration with 1.8V microcontrollers and battery-powered systems without voltage translation. |
| 16-byte page write buffer | Reduces I²C transaction overhead: single Stop condition initiates atomic 16-byte write, minimizing bus occupancy vs. 16 separate byte writes. |
| Schmitt-trigger inputs with noise filtering | Rejects bus transients ≤50 ns and provides ≥50 mV hysteresis - eliminates false Start/Stop detection in electrically noisy motor-control or power-conversion environments. |
| Hardware write-protection (WP pin) | Provides fail-safe, pin-level lockout of memory writes - critical for protecting bootloader configuration or safety-critical calibration data. |
| Self-timed erase/write cycle | Eliminates need for external timing control or status polling beyond ACK polling - simplifies firmware implementation and reduces CPU load. |
Applications
| Smart Meter Firmware Storage | Industrial Sensor Calibration |
|---|---|
Use Scenario: Storing tariff tables, meter ID, and firmware update flags in electricity/water meters subject to frequent power cycling and EMI. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent settings accessible via I²C during boot and runtime. Use Value: 1.7V operation ensures reliable write during brown-out conditions; >200-year retention guarantees data integrity over 20+ year meter lifetime. | Use Scenario: Retaining factory-calibrated offset/gain coefficients for analog temperature or pressure sensors in factory automation equipment. IC Role / Device Role / Timing Role: Dedicated calibration data repository written once during production test and read on every power-up. Use Value: Hardware WP pin prevents field overwrite of calibration values; 1 million endurance supports re-calibration during maintenance cycles. |
| Automotive Body Control Module | Medical Device Configuration |
Use Scenario: Saving user preferences (seat position, mirror angle) and fault logs in 12V automotive systems with wide supply variation and thermal stress. IC Role / Device Role / Timing Role: I²C slave storing volatile-to-nonvolatile state mappings and diagnostic history. Use Value: Industrial temp rating (–40°C to +85°C) and AEC-Q100 qualification ensure reliability under hood temperatures; 4 kV ESD withstand protects against assembly discharge. | Use Scenario: Holding regulatory-compliant device settings (alarm thresholds, measurement units) and audit trail metadata in portable patient monitors. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration store accessed only during initialization or authorized service mode. Use Value: WP pin enables hardware-enforced write-lock during clinical use; 16-byte page writes allow atomic update of interdependent parameters. |
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/SN | Requires minimum 2.5V VCC; identical 400 kHz speed, 8-pin SOIC package, and 16Kbit organization. | Not suitable for 1.8V systems; otherwise drop-in compatible in 2.5–5.5V designs with same timing and pinout. | Select when operating exclusively above 2.5V and cost sensitivity outweighs low-voltage flexibility. |
| 24AA16T-I/MS | Same electrical specs and functionality, but in 8-lead MSOP package (3.0 × 3.0 mm vs. SOIC's 4.9 × 3.9 mm). | Used where PCB area is constrained; requires different land pattern and reflow profile due to smaller thermal mass and exposed pad. | Select for space-constrained layouts where MSOP footprint and thermal performance are prioritized over SOIC manufacturability. |
Compared with 24LC16B-I/SN, the 24AA16T-I/MC16KVAO enables 1.7V operation critical for battery-backed systems, while versus 24AA16T-I/MS it trades compactness for SOIC's broader assembly compatibility and thermal margin - making it optimal for industrial control boards requiring robust 1.8V interfacing and standard through-hole/reflow processes.
Availability
24AA16T-I/MC16KVAO is available at Aetrix Electronics and suitable for smart meter firmware storage, industrial sensor calibration, and automotive body control module applications requiring stable component supply across extended product lifecycles.
Supply support for 24AA16T-I/MC16KVAO 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 24AA16T-I/MC16KVAO belongs to Microchip's 24XX16 family of I²C serial EEPROMs, designed specifically for low-power, noise-immune nonvolatile data storage in resource-constrained embedded systems where voltage flexibility and long-term data integrity are essential.
FAQ
What is the minimum VCC voltage supported by the 24AA16T-I/MC16KVAO?
The 24AA16T-I/MC16KVAO supports operation down to 1.7V, enabling direct interface with 1.8V microcontrollers and battery-powered systems without level-shifting circuitry. This specification is confirmed in the Device Selection Table and Electrical Characteristics section of DS20001703M, where VCC range is explicitly listed as 1.7V–5.5V for the 24AA16 variant. Operation below 1.7V is not guaranteed and may result in unreliable write cycles or communication failure.
Does the 24AA16T-I/MC16KVAO require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA16T-I/MC16KVAO requires external pull-up resistors on both SDA and SCL lines because these pins are open-drain. The recommended value is 2 kΩ for 400 kHz operation (as specified in Section 2.2), 10 kΩ for 100 kHz, and scaled accordingly for other speeds. Pull-ups must connect to the same VCC rail used by the device; mismatched voltage domains will cause communication errors or damage.
How does the WP pin function on the 24AA16T-I/MC16KVAO?
The WP (Write-Protect) pin on the 24AA16T-I/MC16KVAO provides hardware-level inhibition of all write operations. When tied to VCC, the entire 16-Kbit memory array (addresses 000h–7FFh) becomes read-only; read operations remain fully functional. When tied to VSS (or left floating, though not recommended), normal read/write access is enabled. This behavior is documented in Section 2.4 and Figure 6-3 of DS20001703M and applies identically to the 24AA16T-I/MC16KVAO.
What is the maximum page write size supported by the 24AA16T-I/MC16KVAO?
The 24AA16T-I/MC16KVAO supports a maximum page write size of 16 bytes, implemented via an on-chip page buffer. Page writes must remain within a single 16-byte physical boundary (e.g., addresses 00h–0Fh, 10h–1Fh); crossing boundaries causes wraparound overwrite. This capability is specified in the Features list and detailed in Section 6.2, with a maximum write cycle time of 5 ms per page - confirmed across all 24AA16 variants including 24AA16T-I/MC16KVAO.
Is the 24AA16T-I/MC16KVAO AEC-Q100 qualified?
Yes, the 24AA16T-I/MC16KVAO is AEC-Q100 qualified, as stated in the Features section of DS20001703M. This qualification applies to the entire 24XX16 family (24AA16/24LC16B/24FC16), and the "I" suffix in the part number denotes Industrial temperature grade (–40°C to +85°C), which aligns with AEC-Q100 Grade 2 requirements. Qualification documentation is available from Microchip upon request and supports use in automotive body electronics and infotainment subsystems.
24AA16T-I/MC16KVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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:
- 100 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 3.5 µs
- Voltage - Supply:
- 1.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x3)
24AA16T-I/MC16KVAO FAQ
1.How can I place an order for 24AA16T-I/MC16KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA16T-I/MC16KVAO 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 24AA16T-I/MC16KVAO reliable?
The price and inventory of 24AA16T-I/MC16KVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA16T-I/MC16KVAO is usually 5 days.
3.What payment methods are accepted for 24AA16T-I/MC16KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA16T-I/MC16KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA16T-I/MC16KVAO?
24AA16T-I/MC16KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA16T-I/MC16KVAO 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 24AA16T-I/MC16KVAO?
For technical support, including 24AA16T-I/MC16KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA16T-I/MC16KVAO requirements.
6.How does Aetrix verify that 24AA16T-I/MC16KVAO is sourced from the original manufacturer or authorized distributors?
All 24AA16T-I/MC16KVAO 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 24AA16T-I/MC16KVAO meets industry standards.
7.What is the process for return or replacement of 24AA16T-I/MC16KVAO?
All 24AA16T-I/MC16KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 24AA16T-I/MC16KVAO, 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 24AA16T-I/MC16KVAO part is unused and in its original packaging.
Return procedure for 24AA16T-I/MC16KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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