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HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersATMEGA16HVB-8X3
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ATMEGA16HVB-8X3 - Microchip Technology

Manufacturer Part Number
ATMEGA16HVB-8X3
Manufacturer
Microchip Technology
Allelco Part Number
32D-ATMEGA16HVB-8X3
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
14,660 pcs available, New & Original
Parts Description
IC MCU 8BIT 16KB FLASH 44TSSOP
Package
44-TSSOP
Data sheet
ATMEGA16HVB-8X3.pdf

PCN Obsolescence/ EOL

Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
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In stock: 14660

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Specifications

ATMEGA16HVB-8X3 Tech Specifications
Microchip Technology - ATMEGA16HVB-8X3 technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - ATMEGA16HVB-8X3

Product Attribute Attribute Value
Manufacturer Microchip Technology
Voltage - Supply (Vcc/Vdd) 4V ~ 25V
Supplier Device Package 44-TSSOP
Speed 8MHz
Series AVR® ATmega
RAM Size 1K x 8
Program Memory Type FLASH
Program Memory Size 16KB (8K x 16)
Peripherals POR, WDT
Package / Case 44-TFSOP (0.173', 4.40mm Width)
Package Tube
Product Attribute Attribute Value
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Number of I/O 17
Mounting Type Surface Mount
EEPROM Size 512 x 8
Data Converters A/D 7x12b
Core Size 8-Bit
Core Processor AVR
Connectivity I²C, SPI
Base Product Number ATMEGA16

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.31.0001

Frequently Asked Questions(FAQ)

How does the ATMEGA16HVB-8X3 handle power consumption during active versus sleep modes, and what design considerations are necessary for battery-powered applications?
The ATMEGA16HVB-8X3 operates across a wide supply voltage range of 4V to 25V, making it suitable for both battery and regulated power systems. In active mode at 8MHz, typical current consumption is approximately 10–15 mA at 5V, depending on peripheral usage. When configured in power-down sleep mode via the watchdog timer or other low-power peripherals, current drops to around 0.5–2 µA, enabling extended battery life. Designers should ensure stable voltage regulation near the lower end of the supply range (e.g., 4V) and minimize leakage by disabling unused I/O pins and analog modules. Proper use of the Brown-Out Detection (BOD) feature is critical to prevent erratic behavior under undervoltage conditions.
What are the key differences between using the internal oscillator versus an external crystal with the ATMEGA16HVB-8X3, particularly regarding timing accuracy and system reliability?
The ATMEGA16HVB-8X3 features an internal calibrated RC oscillator that runs at 1MHz with ±10% accuracy over temperature and voltage variations. While sufficient for many applications, this may not meet precision requirements such as UART baud rate matching or I²C timing constraints. An external crystal oscillator—typically 4–16 MHz—can be used to achieve higher frequency (up to 8MHz maximum) and better stability (±20 ppm or better). For time-critical communication protocols like SPI or synchronous I²C, an external crystal improves data integrity. However, it adds component count, cost, and potential susceptibility to noise. Designers must weigh accuracy needs against simplicity and cost.
Can the ATMEGA16HVB-8X3 reliably interface with sensors requiring 3.3V logic levels if the microcontroller is powered at 5V, and how should level shifting be implemented?
Yes, the ATMEGA16HVB-8X3 supports mixed-voltage operation within its specified 4V–25V supply range. Its I/O pins are 5V tolerant when powered at 5V, meaning they can safely accept up to 5.5V input signals without damage. However, driving 3.3V logic from a 5V MCU is acceptable only if the target device tolerates 5V inputs; otherwise, bidirectional level shifters (e.g., TXS series) or resistive dividers are required for outputs. For bidirectional lines like I²C, open-drain configuration with appropriate pull-up resistors to the higher voltage rail ensures safe coexistence. Careful attention to rise times and capacitive loads is essential to maintain signal integrity.
How does the 7-channel 12-bit ADC in the ATMEGA16HVB-8X3 perform in noisy industrial environments, and what software techniques improve measurement accuracy?
The integrated 12-bit successive approximation ADC provides 4.8 effective bits (ENOB) under typical conditions, offering resolution sufficient for most sensor applications. In electrically noisy environments common in industrial settings, sampling multiple times and averaging results significantly reduces random noise impact. Additional software filtering, such as median-of-three or moving average filters, helps reject transient interference. It's also recommended to disable unused peripherals during ADC conversions and use the ADC’s built-in auto-triggering capability synchronized with Timer/Counter modules to minimize CPU overhead and timing jitter. Grounding strategies and analog front-end design (e.g., RC filtering) remain crucial for optimal performance.
What memory architecture considerations apply when developing firmware for the ATMEGA16HVB-8X3, especially regarding code size and data persistence?
With 16KB of Flash program memory and 1KB of SRAM, the ATMEGA16HVB-8X3 is well-suited for moderate-complexity embedded tasks. Code must be optimized to fit within the 16KB limit, necessitating careful function modularization and avoidance of large stack frames. The 512-byte EEPROM allows non-volatile storage of calibration data or user settings without erasing Flash. However, EEPROM endurance is limited (~100k write cycles), so frequent updates should be buffered in RAM and written infrequently. Linker scripts and compiler flags should align .text and .data sections efficiently to avoid fragmentation and ensure reliable vector table placement.
How does thermal performance affect the operation of the ATMEGA16HVB-8X3 in compact enclosures, and what mitigation strategies exist?
Operating within -40°C to +85°C, the ATMEGA16HVB-8X3 maintains functional stability across most commercial and industrial ranges. However, in sealed or high-ambient-temperature environments, self-heating due to I/O switching and ADC/DAC activity can raise junction temperature above air temperature. Poor PCB layout with inadequate copper pour or lack of thermal vias exacerbates this. To mitigate, minimize dynamic load on I/O pins, reduce clock frequency if possible, and implement duty-cycling for high-current peripherals. Thermal simulation using tools like ANSYS Icepak or even simplified hand calculations can estimate temperature rise, ensuring long-term reliability.
What are the trade-offs between using the Watchdog Timer (WDT) versus external supervisory ICs for system reset management in designs based on the ATMEGA16HVB-8X3?
The ATMEGA16HVB-8X3 includes a hardware WDT that resets the MCU if the firmware hangs, providing basic fault recovery at minimal BOM cost. It operates independently of the main clock and consumes very little power. However, it lacks advanced monitoring features like brown-out detection granularity or programmable delay beyond factory-set options. External supervisors (e.g., MAX809) offer finer voltage thresholds, longer delays, and additional status signals but increase component count and power budget slightly. For mission-critical systems requiring precise reset timing or multiple fault detection paths, an external supervisor may be preferable despite added complexity.
In what scenarios would upgrading from the ATMEGA16HVB-8X3 to a newer AVR family provide tangible benefits, and how do architectural improvements compare?
Migration may be warranted when exceeding the ATMEGA16HVB-8X3’s limitations: larger code footprint (>16KB), need for more than 1KB RAM, or requirement for enhanced peripherals like CAN or USB. Newer members of the ATmega family (e.g., ATmega328P, ATmega2560) offer doubled resources, faster instruction throughput, improved analog subsystems, and lower active/power ratios. Additionally, modern devices support advanced debug interfaces (like JTAGICE mkII compatibility) and have undergone extensive validation for automotive and safety applications. Evaluating total system cost, development toolchain support, and lifecycle availability is essential before migrating.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology ATMEGA16HVB-8X3

Product Attribute ATMEGA16HVB-8X3R ATMEGA16HVB-8X3 ATMEGA16HVB-8X3R ATMEGA16HVA-4CKU
Part Number ATMEGA16HVB-8X3R ATMEGA16HVB-8X3 ATMEGA16HVB-8X3R ATMEGA16HVA-4CKU
Manufacturer Atmel Atmel Microchip Technology Atmel
Number of I/O - - - -
Voltage - Supply (Vcc/Vdd) - - - -
RAM Size - - - -
Program Memory Type - - - -
EEPROM Size - - - -
Speed - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Core Processor - - - -
Core Size - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Peripherals - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Program Memory Size - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Oscillator Type - - - -
Connectivity - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Data Converters - - - -

ATMEGA16HVB-8X3 Datasheet PDF

Download ATMEGA16HVB-8X3 pdf datasheets and Microchip Technology documentation for ATMEGA16HVB-8X3 - Microchip Technology.

PCN Design/Specification
ATmega(16,32)HVB 29/Aug/2012.pdf Copper Bonding Wire Update 30/Jan/2015.pdf
HTML Datasheet
ATmega16/32HVB Complete.pdf ATMega16/32HVB Summary.pdf
PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf
PCN Packaging
MBB/Label Chgs 16/Nov/2018.pdf Transfer to Microchip/Label/Pkg 5/Sep/2016.pdf

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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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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

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

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
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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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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.


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Electrostatic Discharge Protection and Handling

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ATMEGA16HVB-8X3 Image

ATMEGA16HVB-8X3

Microchip Technology
32D-ATMEGA16HVB-8X3

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