Please refer to the English Version as our Official Version.

Europe: France~~(Français)~~ Germany~~(Deutsch)~~ Italy~~(Italia)~~ Russian~~(русский)~~ Poland~~(polski)~~ Czech~~(Čeština)~~ Luxembourg~~(Lëtzebuergesch)~~ Netherlands~~(Nederland)~~ Iceland~~(íslenska)~~ Hungarian~~(Magyarország)~~ Spain~~(español)~~ Portugal~~(Português)~~ Turkey~~(Türk dili)~~ Bulgaria~~(Български език)~~ Ukraine~~(Україна)~~ Greece~~(Ελλάδα)~~ Israel~~(עִבְרִית)~~ Sweden~~(Svenska)~~ Finland~~(Svenska)~~ Finland~~(Suomi)~~ Romania~~(românesc)~~ Moldova~~(românesc)~~ Slovakia~~(Slovenská)~~ Denmark~~(Dansk)~~ Slovenia~~(Slovenija)~~ Slovenia~~(Hrvatska)~~ Croatia~~(Hrvatska)~~ Serbia~~(Hrvatska)~~ Montenegro~~(Hrvatska)~~ Bosnia and Herzegovina~~(Hrvatska)~~ Lithuania~~(lietuvių)~~ Spain~~(Português)~~ Switzerland~~(Deutsch)~~ United Kingdom~~(English)~~

Asia/Pacific: Japan~~(日本語)~~ Korea~~(한국의)~~ Thailand~~(ภาษาไทย)~~ Malaysia~~(Melayu)~~ Singapore~~(Melayu)~~ Vietnam~~(Tiếng Việt)~~ Philippines~~(Pilipino)~~

Africa, India and Middle East: United Arab Emirates~~(العربية)~~ Iran~~(فارسی)~~ Tajikistan~~(فارسی)~~ India~~(हिंदी)~~ Madagascar~~(malaɡasʲ)~~

South America / Oceania: New Zealand~~(Maori)~~ Brazil~~(Português)~~ Angola~~(Português)~~ Mozambique~~(Português)~~

North America: United States~~(English)~~ Canada~~(English)~~ Haiti~~(Ayiti)~~ Mexico~~(español)~~

Home Products Integrated Circuits (ICs)Embedded - Microcontrollers~~ATMEGA16HVA-4TUR~~

Image may be representation.
See specifications for product details.

~~Favorite~~

EXPRESS OPTION

Payment method

ATMEGA16HVA-4TUR - Microchip Technology

Manufacturer Part Number: ATMEGA16HVA-4TUR

Manufacturer: Microchip Technology

Allelco Part Number: 98D-ATMEGA16HVA-4TUR

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 49,474 pcs available, New & Original

Parts Description: IC MCU 8BIT 16KB FLASH 28TSOP

Package: 28-TSOP

Data sheet: ATMEGA16HVA-4TU.pdf

Datasheets
Cylindrical Battery Holders.pdf

PCN Packaging
Tape and Reel Label Update 10/Feb/2015.pdf MBB/Label Chgs 16/Nov/2018.pdf

PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf

RoHs Status: ROHS3 Compliant

~~Compare~~

Our certification

In stock: 49474

Unit Price: $4.48
Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity	Unit Price	Ext. Price
1+	$4.48	$4.48

The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

ATMEGA16HVA-4TUR Tech Specifications
Microchip Technology - ATMEGA16HVA-4TUR technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - ATMEGA16HVA-4TUR

Product Attribute	Attribute Value
Manufacturer	Microchip Technology
Voltage - Supply (Vcc/Vdd)	1.8V ~ 9V
Supplier Device Package	28-TSOP
Speed	4MHz
Series	AVR® ATmega
RAM Size	512 x 8
Program Memory Type	FLASH
Program Memory Size	16KB (8K x 16)
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
Package / Case	28-TSSOP (0.465', 11.80mm Width)
Package	Tape & Reel (TR)

Product Attribute	Attribute Value
Oscillator Type	Internal
Operating Temperature	-20°C ~ 85°C (TA)
Number of I/O	7
Mounting Type	Surface Mount
EEPROM Size	256 x 8
Data Converters	A/D 5x12b
Core Size	8-Bit
Core Processor	AVR
Connectivity	SPI
Base Product Number	ATMEGA16

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8542.31.0001

Frequently Asked Questions(FAQ)

How does the power consumption of ATMEGA16HVA-4TUR behave across its operating voltage range, and what are the implications for battery-powered applications?: The ATMEGA16HVA-4TUR operates from 1.8V to 9V, with dynamic current consumption varying significantly based on clock speed and peripherals. At 4MHz and full operation, typical active current is around 3–5 mA at 5V, but drops to approximately 0.7–1.2 mA at 2.7V when running at reduced frequencies. In power-down modes, current can fall below 1 µA, making it suitable for low-power embedded systems. Designers should consider voltage scaling and clock gating to optimize energy efficiency in battery-operated devices such as sensor nodes or wearables.

What is the recommended decoupling strategy for ATMEGA16HVA-4TUR, and how does improper bypassing affect system stability?: For stable operation, the ATMEGA16HVA-4TUR requires a 100 nF ceramic capacitor placed as close as possible to each VCC pin, along with a bulk 10 µF tantalum or electrolytic capacitor near the power entry point. Poor decoupling can lead to brown-out resets, erratic I/O behavior, or failure to start due to noise-induced logic glitches. Given the device’s internal oscillator sensitivity, supply ripple above 50 mV peak-to-peak may cause timing inaccuracies or watchdog triggers.

Can the ATMEGA16HVA-4TUR reliably drive external loads through its GPIO pins without additional buffering, and what limits current per pin?: Each GPIO pin on the ATMEGA16HVA-4TUR can source or sink up to 40 mA, but this must be derated to 20 mA maximum total for all ports combined. While brief overloads are tolerated, sustained currents beyond 25 mA may degrade reliability over time. Driving LEDs or small motors directly is feasible with series resistors, but digital buffers (e.g., 74HC125) are recommended for higher capacitive or inductive loads to protect both the MCU and power supply.

How does the internal RC oscillator of ATMEGA16HVA-4TUR perform in terms of accuracy and drift over temperature, and when should an external crystal be used instead?: The internal 4MHz oscillator has ±1% initial tolerance and exhibits up to ±10% frequency variation over the -20°C to 85°C range, depending on calibration. This makes it unsuitable for precision timing applications like UART baud rate generation or real-time clocks. For systems requiring better than 0.5% stability, an external crystal (e.g., 4MHz fundamental mode) is preferred. The ATMEGA16HVA-4TUR supports external clock inputs via XTAL1/2 pins, enabling higher accuracy with minimal software overhead.

What are the limitations of using the built-in analog-to-digital converter (ADC) in ATMEGA16HVA-4TUR for high-resolution sensing applications?: The ATMEGA16HVA-4TUR features a 12-bit ADC with 5 channels, offering 4096 discrete levels. However, effective resolution is often limited to 11 bits due to reference noise and sampling capacitance effects. Input impedance varies with sample time; shorter acquisition times reduce loading but increase noise susceptibility. For accurate measurements, ensure proper grounding, use differential inputs where available, and average multiple conversions. External amplifiers or precision references improve performance but add cost and complexity.

How does the EEPROM endurance compare between ATMEGA16HVA-4TUR and other AVR microcontrollers, and what write strategies extend its lifetime?: The ATMEGA16HVA-4TUR provides 100,000 erase/write cycles per location with a retention period of 20 years at 85°C. To maximize longevity, avoid frequent writes to the same address; instead, implement circular buffer logging or wear-leveling algorithms. Batch updates and reducing write frequency significantly extend usable life. Applications like configuration storage benefit from periodic reads rather than constant rewrites, preserving EEPROM integrity in long-term deployments.

Is it possible to run ATMEGA16HVA-4TUR at 4MHz while operating at 1.8V, and what trade-offs arise from voltage-frequency scaling?: Yes, the ATMEGA16HVA-4TUR supports up to 4MHz operation down to 1.8V, as specified in its datasheet. However, lower voltages reduce noise margins and increase susceptibility to electromagnetic interference. Clock jitter also becomes more pronounced, potentially affecting serial communications. While power savings are substantial—dynamic current drops by ~60% from 5V to 1.8V—designers must validate signal integrity, especially for SPI or asynchronous protocols, under worst-case conditions.

How does the watchdog timer (WDT) in ATMEGA16HVA-4TUR behave during sleep modes, and can it wake the device reliably?: The WDT continues running in idle and power-down modes, allowing periodic reset prevention and controlled wake-up. It offers selectable timeout periods from 16ms to 8s, calibrated to ±10% accuracy. During deep sleep, the WDT uses only ~1 µA of current. Reliable operation depends on correct initialization and avoiding WDT disable sequences that could inadvertently lock the system. Use caution when modifying WDT settings in interrupt service routines to prevent race conditions.

What are the key differences between ATMEGA16HVA-4TUR and ATMEGA16U4 in terms of connectivity and application suitability?: While both share the same core architecture, the ATMEGA16HVA-4TUR lacks USB hardware, focusing instead on SPI/I²C/UART for peripheral interfacing. In contrast, the ATMEGA16U4 includes native USB 2.0 support, making it ideal for HID or CDC class devices. The ATMEGA16HVA-4TUR targets cost-sensitive industrial controls or sensor hubs where wired connectivity is via serial buses. Choosing between them hinges on whether USB host/device capability is required, with the former offering simpler PCB layout and lower bill of materials.

What precautions are necessary when programming ATMEGA16HVA-4TUR via ISP, and how do fuse settings impact recovery options?: Programming requires careful attention to MISO/MOSI/SCLK pin connections and ensuring the target is powered correctly before initiating communication. Incorrect fuse settings—especially disabling SCK or reset—can brick the device. Always verify clock source fuses match the intended oscillator type (internal vs. external). Using an external programmer with readback protection disabled allows post-deployment debugging, but secure designs may require lock bits to prevent unauthorized access to flash memory.

How does the brown-out detection (BOD) feature in ATMEGA16HVA-4TUR respond to transient supply dips, and what thresholds are programmable?: The BOD monitors VCC and triggers a reset if voltage falls below a programmable threshold: 2.7V, 4.3V, or 4.6V (with hysteresis). This prevents erratic operation during power-up transients or load spikes. At 2.7V, the threshold remains stable even as supply dips slightly below nominal. Enabling BOD adds negligible current (~1–2 µA), but disables the ability to operate below the selected level, which must be chosen based on minimum system requirements and expected noise margins.

Can the PWM outputs of ATMEGA16HVA-4TUR achieve high-resolution control without external components, and what limits duty cycle granularity?: The ATMEGA16HVA-4TUR offers up to 8 independent PWM channels with adjustable resolution via timer prescalers and compare registers. Maximum effective resolution is 10 bits (from 0 to 1023) when using phase-correct PWM mode, though actual precision depends on clock accuracy and counter overflow timing. Fine control below 1% duty is possible but may suffer from quantization error. For motor control or LED dimming, combining PWM with external op-amps or MOSFET drivers improves linearity and current delivery.

What environmental factors most affect the reliability of ATMEGA16HVA-4TUR in industrial applications, and how does Moisture Sensitivity Level (MSL) guide handling procedures?: Operating within -20°C to 85°C ensures functionality, but solder reflow profile adherence is critical due to MSL3 classification (168-hour floor life). Exposure beyond 168 hours without baking increases popcorning risk during rework. High humidity accelerates corrosion on exposed leads, particularly in TSOP packaging. Proper storage in dry cabinets and controlled soldering temperatures (<260°C peak, <10 seconds) preserve long-term reliability in harsh environments like factory automation or HVAC control systems.

How should designers handle unused I/O pins on ATMEGA16HVA-4TUR to minimize power leakage and EMI?: Unused GPIOs should be configured as outputs driven to either VCC or GND, or pulled up/down via on-chip weak pull-ups (typically 20–50 kΩ). Floating inputs draw unpredictable current and radiate noise, increasing EMI risks. Alternatively, tie inputs to known states through external resistors. This reduces standby current and stabilizes input thresholds, improving noise immunity—critical in densely populated PCBs where crosstalk can interfere with sensitive ADCs or communication lines.

What are the advantages of using ATMEGA16HVA-4TUR over ARM Cortex-M0 variants in ultra-low-power embedded projects?: The ATMEGA16HVA-4TUR offers lower static power consumption in active mode compared to many Cortex-M0 MCUs due to simpler instruction set and slower clock speeds, making it preferable for simple control loops with infrequent processing. Its integrated ADC and peripherals reduce external component count, lowering overall system power. However, ARM parts provide higher performance and modern toolchains. Selection depends on complexity needs: ATMEGA16HVA-4TUR excels in basic sensing and actuation tasks where code size and simplicity outweigh computational demands.

How does the RAM size of ATMEGA16HVA-4TUR constrain data-intensive applications, and what optimization techniques mitigate memory pressure?: With 512 bytes of SRAM, complex data structures or large buffers quickly exhaust memory. Real-time data logging, image processing, or multitasking are impractical without external RAM. Mitigation strategies include using program memory (flash) for constant lookup tables, compressing data before storage, and employing stack discipline to avoid overflow. For moderate datasets, ring buffers and variable length encoding reduce footprint while maintaining responsiveness in event-driven firmware.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology ATMEGA16HVA-4TUR

Product Attribute
Part Number	ATMEGA16HVA-4CKUR	ATMEGA16HVA-4TU	ATMEGA16HVA-4CKU	ATMEGA16HVA-4CKU
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology	Atmel
Voltage - Supply (Vcc/Vdd)	-	-	-	-
RAM Size	-	-	-	-
Number of I/O	-	-	-	-
Program Memory Size	-	-	-	-
Oscillator Type	-	-	-	-
Connectivity	-	-	-	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Data Converters	-	-	-	-
Series	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Core Processor	-	-	-	-
Speed	-	-	-	-
Core Size	-	-	-	-
Peripherals	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Program Memory Type	-	-	-	-
EEPROM Size	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad

ATMEGA16HVA-4TUR Datasheet PDF

Download ATMEGA16HVA-4TUR pdf datasheets and Microchip Technology documentation for ATMEGA16HVA-4TUR - Microchip Technology.

Datasheets: Cylindrical Battery Holders.pdf
PCN Packaging: Tape and Reel Label Update 10/Feb/2015.pdf MBB/Label Chgs 16/Nov/2018.pdf
PCN Obsolescence/ EOL: Cylindrical Battery Holders.pdf

Customers Also Interested in

Recommended Products

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.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

Use your express account for shipment if you have one.
Use our account for the shipment. Refer to the table below for the approximate charges.

(Different time frame / countries / package size has different price.)

Delivery Method

Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	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.

QC (Quality Warranty)
Payment Support
Packaging
Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.

Strict quality inspection builds a solid foundation for electronic component quality.

Visual inspection
Performance testing and reliability verification
Standardized full-process testing
Precise control of every parameter

We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Quality Inspection

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner

Efficient Supply Management
Cost-Saving Procurement
Fast Sourcing & Delivery

Contact us if you have any questions.

Phone: +00852 9146 4856
Email: info@allelco.com

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.

ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification

ISO 9001: 2015
ISO 13485: 2016
ISO 14001: 2015
ISO 28000: 2007
ISO 45001: 2018
GB/T 27922-2011

SMTA
IPC
ESD
PSMA