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HomeProductsIntegrated Circuits (ICs)Specialized ICsATMEGA16IL-4AI
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ATMEGA16IL-4AI - Atmel (Microchip Technology)

Manufacturer Part Number
ATMEGA16IL-4AI
Manufacturer
Atmel
Allelco Part Number
32D-ATMEGA16IL-4AI
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
13,560 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 13560

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Specifications

ATMEGA16IL-4AI Tech Specifications
Atmel (Microchip Technology) - ATMEGA16IL-4AI technical specifications, attributes, parameters and parts with similar specifications to Atmel (Microchip Technology) - ATMEGA16IL-4AI

Product Attribute Attribute Value
Part Number ATMEGA16IL-4AI
Package DAC91001
Description DAC91001
Stock Condition Get 13560 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Atmel
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the operating temperature range of the ATMEGA16IL-4AI influence its suitability for industrial automation applications compared to commercial-grade microcontrollers?
The ATMEGA16IL-4AI operates over a junction temperature range from -40°C to +85°C, making it compatible with extended ambient conditions typical in industrial environments. This wider thermal envelope supports deployment in HVAC systems, motor controllers, and sensor networks where ambient temperatures may fluctuate beyond standard office or consumer product tolerances, unlike many commercial-grade MCUs limited to 0°C–70°C.
What is the significance of the 4 MHz internal oscillator frequency in the ATMEGA16IL-4AI for low-power battery-operated designs?
The ATMEGA16IL-4AI’s calibrated internal RC oscillator runs at approximately 4 MHz, enabling stable operation without external crystals while reducing system cost and board space. However, this frequency limits maximum instruction throughput compared to higher-speed oscillators; designers must balance clock speed against power consumption—this configuration typically draws around 3–5 mA during active execution, which can be acceptable in duty-cycled applications like remote sensors but suboptimal for real-time control requiring faster response.
Can the ATMEGA16IL-4AI reliably interface with 3.3V logic peripherals when powered by a 5V supply?
Yes, the ATMEGA16IL-4AI features full 5V-tolerant I/O pins that accept up to 5.5V even when operating at 5V VCC. This allows safe bidirectional communication with 3.3V devices such as ADCs or wireless modules without level shifters, simplifying mixed-voltage designs while maintaining signal integrity across voltage domains.
How does the flash memory size of 16KB in the ATMEGA16IL-4AI compare to similar 8-bit AVR microcontrollers for embedded firmware development?
With 16KB of in-system programmable flash, the ATMEGA16IL-4AI provides sufficient code storage for moderately complex applications—such as data logging or simple motor control—but falls short of larger counterparts like the ATmega328P (32KB). For projects exceeding 14KB footprint due to stack usage, interrupts, or libraries, developers may need to optimize code or select a higher-density variant to avoid flash overflow.
What are the implications of the QFP packaging on PCB layout and thermal performance for the ATMEGA16IL-4AI?
The ATMEGA16IL-4AI uses a 44-pin QFP package with exposed pads that aid heat dissipation through the PCB copper layer. While not as thermally robust as LQFP or TQFN variants with dedicated thermal pads, it still supports moderate current loads and can be adequately cooled via proper grounding planes. Designers should allocate at least 2–3 square inches of continuous ground plane beneath the component to minimize thermal resistance and ensure reliable long-term operation.
At what supply voltage does the ATMEGA16IL-4AI begin to exhibit significant leakage current, affecting battery life in portable devices?
The ATMEGA16IL-4AI exhibits increasing subthreshold leakage as VCC approaches 2.7V, with active-mode current rising sharply below this threshold. At 1.8V, typical active current consumption jumps from ~0.3 mA (at 4 MHz) to over 1.0 mA, significantly impacting battery runtime in coin-cell or Li-ion powered devices. Therefore, ultra-low-power modes like Idle or Power-down become more critical below 2.7V to maintain efficiency.
Does the ATMEGA16IL-4AI support in-circuit programming, and what does this mean for production testing and field updates?
The ATMEGA16IL-4AI supports In-System Programming (ISP) via the SPI interface using standard programming tools like AVR Dragon or JTAGICE3. This enables firmware updates without removing the MCU from the target board, streamlining manufacturing test flows and facilitating over-the-air (OTA) updates in deployed systems, though security considerations such as lock bits and fuse settings must be managed carefully.
How does the watchdog timer configuration affect system reliability in unattended operation using the ATMEGA16IL-4AI?
The ATMEGA16IL-4AI includes an independent watchdog timer (WDT) that resets the device if software hangs or enters an infinite loop. Configurable timeout periods range from 16 ms to 8 s, allowing trade-offs between responsiveness and false-trigger risk. For mission-critical applications like telemetry nodes, a 1–2 second WDT period balances fault detection sensitivity with immunity to benign timing variations, enhancing robustness in autonomous or remote deployments.
What is the maximum allowable capacitive load on the RESET pin of the ATMEGA16IL-4AI, and how might this impact bootloader design?
The ATMEGA16IL-4AI’s reset circuitry can tolerate only minimal external capacitance—typically less than 20 pF—on the NRST pin. Excessive capacitance from long traces or shared bus lines can delay reset assertion edges, causing unreliable entry into ISP mode during bootloader execution. To mitigate, designers often insert a small series resistor (e.g., 100Ω) near the reset pin and keep trace lengths under 1 inch to preserve signal integrity.
How does the ATMEGA16IL-4AI’s ADC resolution and sampling rate compare to other 8-bit AVR models for analog sensing applications?
The ATMEGA16IL-4AI integrates a 10-bit successive approximation ADC capable of up to 15 kSPS with selectable reference voltages (AVCC, internal 2.56V, or external). While not as fast as some newer 16-bit MCUs, its effective resolution is sufficient for most temperature, pressure, or voltage monitoring tasks. Compared to smaller-flash variants like the ATtiny85, it offers superior analog performance without sacrificing much code capacity, making it ideal for precision sensor interfaces in constrained environments.
What precautions should be taken when routing high-impedance signals near the ATMEGA16IL-4AI’s analog inputs to prevent noise coupling?
Analog input channels on the ATMEGA16IL-4AI are sensitive to electromagnetic interference due to their high impedance (>1 GΩ). To minimize noise pickup, maintain guard rings around analog traces, route them away from digital lines (especially switching outputs), and avoid crossing power/ground splits. Additionally, placing a 0.1 µF bypass capacitor directly adjacent to the VCC and AVCC pins reduces high-frequency supply ripple that could degrade ADC accuracy.
Can the ATMEGA16IL-4AI operate safely in environments with frequent electrostatic discharge events?
The ATMEGA16IL-4AI meets human-body model (HBM) ESD protection levels up to ±2 kV per JEDEC standards, which covers typical handling scenarios. However, industrial environments with RF transmitters or unshielded equipment may generate higher transients. Implementing TVS diodes on all I/O lines and ensuring proper PCB grounding mitigates risks beyond datasheet specifications, extending device lifespan in harsh installations.
What is the recommended decoupling strategy for stable operation of the ATMEGA16IL-4AI on a 5V system?
For reliable operation, use a combination of a 10 µF tantalum or ceramic capacitor near the VCC pin for bulk filtering and a 0.1 µF ceramic capacitor placed within 1 cm of each power pin (VCC, AVCC) to suppress high-frequency noise. Avoid sharing decoupling capacitors across multiple ICs unless isolated by ferrite beads, as cross-talk can destabilize the ATMEGA16IL-4AI’s internal regulators and cause erratic behavior during transient loads.
How does the brown-out detection feature in the ATMEGA16IL-4AI enhance system stability during power-up or voltage dips?
The ATMEGA16IL-4AI includes configurable brown-out detection (BOD) thresholds ranging from 2.7V to 4.5V, automatically resetting the MCU if VCC drops below the set level. During power-up, this prevents partial state execution that could corrupt memory or peripherals. Setting BOD to 3.0V ensures the microcontroller only initializes when logic levels are stable, avoiding glitches in output drivers or communication buses connected to downstream circuits.
What are the limitations of using PWM outputs from the ATMEGA16IL-4AI for driving brushed DC motors?
The ATMEGA16IL-4AI provides eight PWM channels via Timer/Counter modules, suitable for basic speed control of small brushed motors. However, its PWM frequency is limited by prescaler settings—maximum usable frequency is ~62.5 kHz at 4 MHz clock—which may produce audible noise in audio-range applications. Additionally, without built-in H-bridge drivers, external MOSFETs or motor driver ICs are required, increasing component count and layout complexity.
Is it feasible to run the ATMEGA16IL-4AI at reduced clock speeds to extend battery life without sacrificing functionality?
Yes, the ATMEGA16IL-4AI supports dynamic clock scaling via the PLL and prescaler, allowing operation down to 1 MHz or even 125 kHz using the internal RC oscillator. At 125 kHz, active current drops below 50 µA, enabling multi-year operation on a CR2032 coin cell for periodic sensor sampling. However, timing-critical routines must account for slower instruction cycles, and peripheral responsiveness (e.g., UART baud rates) requires recalibration accordingly.
How does the EEPROM endurance specification of 100k write cycles in the ATMEGA16IL-4AI affect data logging strategies?
With a rated endurance of 100,000 erase/write cycles on the integrated EEPROM, the ATMEGA16IL-4AI supports frequent non-volatile data updates—such as timestamped sensor readings—for years under normal usage. However, aggressive logging every few seconds would exhaust the memory in months. To prolong longevity, implement wear-leveling algorithms or buffer writes in RAM before batch-flushing to EEPROM reduces cycle count per address.
What factors should be considered when selecting an external crystal for replacing the internal oscillator in the ATMEGA16IL-4AI?
When upgrading from the internal 4 MHz RC oscillator to an external crystal, choose a low-drift, low-ESR model (e.g., 4.000 MHz ±20 ppm) with matched load capacitors (typically 22 pF). Ensure PCB layout keeps crystal leads short (<5 mm), avoids crossing signal layers, and places load caps equidistant to XTAL pins. Failure to meet these conditions results in frequency inaccuracy (>1% deviation) and potential startup failures due to insufficient drive strength or excessive loading.

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Atmel (Microchip Technology)

ATMEGA16IL-4AI

Atmel (Microchip Technology)
32D-ATMEGA16IL-4AI

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