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Microchip Technology 24AA16-I/MC16KVAO
- Part No.:
- 24AA16-I/MC16KVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
24AA16-I/MC16KVAO.pdf
- Description:
- IC EEPROM 16KBIT I2C 100KHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,313
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Product details
Overview
24AA16-I/MC16KVAO from Microchip Technology Inc. is a 16-Kbit I²C-compatible serial EEPROM organized as eight 256 × 8-bit memory 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-used in embedded system configuration storage, sensor calibration data retention, and firmware parameter backup.
For engineers reviewing the 24AA16-I/MC16KVAO datasheet, 24AA16-I/MC16KVAO pinout, 24AA16-I/MC16KVAO application, or 24AA16-I/MC16KVAO equivalent, key selection considerations include VCC compatibility down to 1.7V, I²C bus timing compliance at 400 kHz (or 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 24AA16-I/MC16KVAO implements a two-wire I²C slave interface 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 enables current-address, random, and sequential read modes.
Write operations include byte-write and page-write (up to 16 bytes per page), both initiating self-timed erase/write cycles with 5 ms maximum duration. The device uses an on-chip HV generator for EEPROM programming and includes input filtering (≤100 ns spike suppression) and output slope control to suppress ground bounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit), organized as eight 256-word blocks - enables modular configuration storage with block-level access control. |
| Supply Voltage Range | 1.7V to 5.5V - supports direct interfacing with 1.8V, 2.5V, 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) - defines achievable write throughput and bus arbitration timing margins. |
| Page Write Buffer | 16 bytes - reduces I²C transaction count for multi-byte writes, lowering bus occupancy and host CPU overhead. |
| Write Protection | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites of critical calibration or security data during power-up or firmware faults. |
| Data Retention | >200 years - ensures long-term reliability for infrequently updated parameters in industrial or automotive deployments. |
| Endurance | 1,000,000 erase/write cycles - supports frequent logging or counter applications in metering or telemetry systems. |
Pinout & Package
24AA16-I/MC16KVAO is supplied in an 8-lead SOIC (SN) package with 150-mil body width and standard 1.27 mm pitch. Pin 1 is marked with a beveled corner or dot; the exposed pad is not present in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Must be connected to system GND; serves as return path for all internal logic and EEPROM programming currents. |
| WP | Write-protect input | Logic-high (VCC) disables all write operations; logic-low (VSS) enables full read/write access - used for field-safe firmware updates. |
| SCL | Serial clock input | Asynchronous master-generated clock synchronizing all address/data transfers; requires external pull-up resistor (2 kΩ typical for 400 kHz). |
| SDA | Serial data I/O | Open-drain bidirectional bus line; must be pulled up externally; changes only during SCL low to avoid spurious Start/Stop conditions. |
| VCC | Power supply | Accepts 1.7V–5.5V; powers internal logic, EEPROM array, and HV generator - decoupling capacitor (0.1 µF) required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Input hysteresis ≥0.05×VCC - rejects bus noise up to 50 ns spikes, ensuring robust operation in electrically noisy industrial environments. |
| Output slope control | Controlled SDA/SCL rise/fall times - eliminates ground bounce during high-speed switching, preventing false logic transitions in mixed-signal PCB layouts. |
| Self-timed write cycle | 5 ms maximum page or byte write - removes need for host polling delay; ACK polling can be used to detect completion without fixed timeout. |
| ESD protection | >4,000 V HBM - withstands handling and board-level ESD events without latch-up or parametric shift, reducing field failure risk. |
| I²C compatibility | Fully compliant with Philips I²C-bus specification (100/400 kHz modes) - interoperable with standard MCU I²C peripherals without custom driver modifications. |
Applications
| Industrial Sensor Node | Medical Device Calibration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and user-adjusted thresholds in a portable blood glucose monitor. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed data integrity across 10+ year product lifetime and 100k+ power cycles. Use Value: Eliminates recalibration service visits by preserving precision calibration data through battery replacement and firmware updates. |
Use Scenario: Holding patient-specific therapy parameters and usage history in an implantable neurostimulator programmer. IC Role / Device Role / Timing Role: Secure, low-power parameter archive with hardware write-protection to prevent unauthorized modification during clinical use. Use Value: Meets IEC 62304 Class C software safety requirements via deterministic write-protection and >200-year data retention. |
| Smart Energy Meter | Automotive Body Control Module |
Use Scenario: Recording tariff schedules, tamper-event logs, and meter firmware version metadata in a DIN-rail mounted kWh meter. IC Role / Device Role / Timing Role: High-endurance (1M cycles) data logger interfaced directly to a 3.3V ARM Cortex-M3 without level shifters. Use Value: Supports daily log writes for 27 years at 100 cycles/day, exceeding utility-grade 15-year field life requirements. |
Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in a vehicle door module with CAN/LIN connectivity. IC Role / Device Role / Timing Role: Low-voltage (1.7V) EEPROM enabling reliable parameter save during cold-cranking (battery dip to 6V). Use Value: Maintains user preferences across ignition cycles without requiring backup capacitors or supercapacitors. |
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, 16-byte page, and SOIC-8 package. | Not suitable for 1.8V systems; otherwise drop-in compatible in 3.3V/5V designs with same timing and pinout. | Select when operating exclusively above 2.5V and cost sensitivity outweighs ultra-low-voltage capability. |
| 24FC16-I/SN | Supports 1 MHz I²C clock; same 1.7V–5.5V range and SOIC-8 package; higher standby current (3 μA at E-temp). | Enables faster configuration loading in high-throughput production test; no change to PCB layout required. | Choose when system clock budget allows 1 MHz bus operation and reduced write latency justifies minor standby current increase. |
Compared with 24LC16B-I/SN, the 24AA16-I/MC16KVAO enables 1.7V operation critical for battery-powered devices, while versus 24FC16-I/SN it trades 1 MHz speed for lower standby current-making it optimal for always-on, energy-constrained nodes where bus bandwidth is secondary to voltage flexibility and quiescent power.
Availability
24AA16-I/MC16KVAO is available at Aetrix Electronics and suitable for industrial sensor nodes, medical device calibration storage, and smart energy metering requiring stable component supply across extended product lifecycles.
Supply support for 24AA16-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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and consumer markets.
The 24AA16-I/MC16KVAO belongs to Microchip's 24XX16 family of I²C EEPROMs, designed specifically for low-voltage, low-power embedded systems needing reliable, pin-compatible configuration storage with hardware write protection.
FAQ
What is the maximum I²C clock frequency supported by the 24AA16-I/MC16KVAO?
The 24AA16-I/MC16KVAO supports up to 400 kHz when VCC is 2.5V or higher. At VCC between 1.7V and 2.5V, the maximum clock frequency is reduced to 100 kHz to ensure reliable timing margin. This dual-speed behavior is explicitly defined in the AC characteristics table of the official DS20001703M datasheet and applies directly to the 24AA16-I/MC16KVAO variant.
Does the 24AA16-I/MC16KVAO require external pull-up resistors on SDA and SCL lines?
Yes, the 24AA16-I/MC16KVAO requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. For 400 kHz operation, a 2 kΩ pull-up to VCC is recommended; for 100 kHz, 10 kΩ is typical. These values ensure proper rise times and noise immunity per the device's AC timing specifications in the 24AA16-I/MC16KVAO datasheet.
How does the WP pin function on the 24AA16-I/MC16KVAO?
On the 24AA16-I/MC16KVAO, the WP (Write-Protect) pin is a logic-level input: when tied to VCC, it disables all write operations to the entire 16-Kbit memory array (addresses 000h–7FFh), while read operations remain fully functional. When tied to VSS or left floating, write access is enabled. This hardware-level protection prevents accidental overwrites during power transients or firmware errors.
What is the page write capacity of the 24AA16-I/MC16KVAO?
The 24AA16-I/MC16KVAO has a 16-byte page write buffer, allowing up to 16 bytes to be written in a single I²C transaction before the internal self-timed write cycle begins. Page writes must stay within a single 16-byte physical boundary (e.g., addresses 00h–0Fh); crossing boundaries causes wraparound. This capability is confirmed in the "Features" section and Figure 6-2 of the 24AA16-I/MC16KVAO datasheet.
Is the 24AA16-I/MC16KVAO RoHS compliant and AEC-Q100 qualified?
The 24AA16-I/MC16KVAO is RoHS compliant per the device selection table in DS20001703M. However, AEC-Q100 qualification applies only to the 24AA16Q variant (automotive grade), not the standard industrial-grade 24AA16-I/MC16KVAO. The "Automotive AEC-Q100 Qualified" note in the datasheet refers to the Q-grade family members, not this specific part number.
24AA16-I/MC16KVAO 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:
- 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)
24AA16-I/MC16KVAO FAQ
1.How can I place an order for 24AA16-I/MC16KVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for 24AA16-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 24AA16-I/MC16KVAO reliable?
The price and inventory of 24AA16-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 24AA16-I/MC16KVAO is usually 5 days.
3.What payment methods are accepted for 24AA16-I/MC16KVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA16-I/MC16KVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24AA16-I/MC16KVAO?
24AA16-I/MC16KVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24AA16-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 24AA16-I/MC16KVAO?
For technical support, including 24AA16-I/MC16KVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA16-I/MC16KVAO requirements.
6.How does Aetrix verify that 24AA16-I/MC16KVAO is sourced from the original manufacturer or authorized distributors?
All 24AA16-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 24AA16-I/MC16KVAO meets industry standards.
7.What is the process for return or replacement of 24AA16-I/MC16KVAO?
All 24AA16-I/MC16KVAO units undergo pre-shipment inspection (PSI). If there is an issue with 24AA16-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 24AA16-I/MC16KVAO part is unused and in its original packaging.
Return procedure for 24AA16-I/MC16KVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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