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ATMEGA16HVB-8X3
Microchip Technology
IC MCU 8BIT 16KB FLASH 44TSSOP
18847 Pcs New Original In Stock
AVR AVR® ATmega Microcontroller IC 8-Bit 8MHz 16KB (8K x 16) FLASH 44-TSSOP
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5.0 / 5.0
- (244 Ratings)
ATMEGA16HVB-8X3
Product Overview
1254522
DiGi Electronics Part Number
ATMEGA16HVB-8X3-DGManufacturer
Microchip Technology
ATMEGA16HVB-8X3
Description
IC MCU 8BIT 16KB FLASH 44TSSOPInventory
18847 Pcs New Original In Stock
AVR AVR® ATmega Microcontroller IC 8-Bit 8MHz 16KB (8K x 16) FLASH 44-TSSOP
Quantity
Minimum 1
Minimum 1
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ATMEGA16HVB-8X3 Technical Specifications
Category
Embedded, Microcontrollers
Packaging
-
Series
AVR® ATmega
Product Status
Obsolete
DiGi-Electronics Programmable
Not Verified
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
I2C, SPI
Peripherals
POR, WDT
Number of I/O
17
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
EEPROM Size
512 x 8
RAM Size
1K x 8
Voltage - Supply (Vcc/Vdd)
4V ~ 25V
Data Converters
A/D 7x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Supplier Device Package
44-TSSOP
Package / Case
44-TFSOP (0.173", 4.40mm Width)
Base Product Number
ATMEGA16
Datasheet & Documents
HTML Datasheet
ATMEGA16HVB-8X3-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.31.0001
Additional Information
Other Names
1611-ATMEGA16HVB-8X3
ATMEGA16HVB8X3
Standard Package
242
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
收到的產品非常滿意，質感佳，出貨速度更是讓我印象深刻！
Dec 02, 2025
Efficiency in delivery and environmentally responsible packaging made this a great experience.
Dec 02, 2025
Excellent website design and unbeatable value make this my preferred electronics shop.
Dec 02, 2025
The company's post-purchase response time is remarkably quick, ensuring any concerns are addressed promptly.
Dec 02, 2025
The delivery was impressively swift; I received my order within two days, and the packaging ensured the product arrived in perfect condition.
Dec 02, 2025
Delivery is always on point, allowing me to plan my work and activities effectively.
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing the obsolete ATMEGA16HVB-8X3 with a modern AVR microcontroller in a 24V industrial battery management system?
The ATMEGA16HVB-8X3 is specifically designed for high-voltage battery applications with a 4V–25V Vcc range and integrated analog front-end for cell monitoring. Directly replacing it with a standard 8-bit AVR like the ATmega328P or ATmega168—without redesigning the power supply and analog interface—risks damaging the MCU due to overvoltage on I/O pins and ADC inputs. A safer migration path is to use Microchip’s newer HV-capable parts like the ATmega32HVB or ATmega64HFR, which maintain similar voltage tolerance and peripheral integration. Always verify pin compatibility, internal reference voltage behavior, and watchdog timer behavior under brown-out conditions before board-level substitution.
Can the ATMEGA16HVB-8X3 be used in a 12V automotive environment without external voltage regulation, and what reliability concerns should I consider?
Yes, the ATMEGA16HVB-8X3 can operate directly on 12V systems thanks to its 4V–25V supply range, eliminating the need for a separate regulator in many cases. However, automotive environments introduce transient spikes (e.g., load dump up to 40V) that exceed the absolute maximum ratings. To ensure reliability, add a TVS diode and input filter network even if the nominal voltage is within spec. Also, note that while the part is rated for -40°C to 85°C, sustained operation near 85°C reduces flash endurance and increases leakage current—consider derating or thermal management if used in under-hood applications. The internal oscillator may also drift more at temperature extremes, affecting timing-critical SPI/I2C communications.
How does the ATMEGA16HVB-8X3 compare to the newer ATmega32HVB for new designs, and should I consider redesigning around the newer part despite the ATMEGA16HVB-8X3 being available in stock?
Although the ATMEGA16HVB-8X3 is still in stock, it is marked obsolete by Microchip, signaling no future support or longevity. The ATmega32HVB offers double the flash (32KB vs 16KB), more RAM (2KB vs 1KB), and enhanced debug features (JTAG vs debugWIRE), making it better suited for future-proof designs requiring firmware updates or complex state machines. Crucially, the ATmega32HVB maintains the same 4V–25V operation, 12-bit ADCs, and battery monitoring peripherals, enabling drop-in replacement in most cases. For new designs, prefer the ATmega32HVB to avoid end-of-life (EOL) risks, inventory obsolescence, and potential last-time buy scenarios. Only use the ATMEGA16HVB-8X3 for legacy sustainment or if code size and memory constraints are tightly bounded.
What layout and PCB design precautions are critical when integrating the ATMEGA16HVB-8X3 in a high-noise motor control application using its internal oscillator?
When using the internal 8MHz oscillator of the ATMEGA16HVB-8X3 in noisy environments like motor drives, minimize clock jitter by placing decoupling capacitors (100nF ceramic + 10µF tantalum) as close as possible to the Vcc and AVcc pins. Route analog traces (ADC inputs) away from PWM lines and power stages, and use ground planes beneath the MCU to reduce coupling. Since the internal oscillator lacks external crystal stability, avoid long reset trace runs that could pick up noise and cause unintended resets—include a 100nF capacitor on the RESET pin to ground. Also, enable the watchdog timer in firmware with a conservative timeout to recover from lockups caused by EMI-induced glitches, but ensure your code accounts for its ~10% frequency tolerance over temperature.
Is it safe to repurpose unused ADC channels on the ATMEGA16HVB-8X3 for general-purpose I/O in a cost-sensitive design, and what hidden pitfalls should I avoid?
While technically possible to configure unused ADC pins (e.g., ADC6, ADC7) as digital I/O on the ATMEGA16HVB-8X3, doing so introduces risks in high-voltage battery applications. These pins may have internal pull-ups or analog circuitry that behaves unpredictably when driven digitally, especially near the upper end of the 25V supply range. Additionally, accidental enabling of the ADC multiplexer during firmware updates or resets can cause leakage currents or false conversions. If you must repurpose them, disable the ADC module entirely in software (set ADEN bit to 0), avoid using internal pull-ups, and validate behavior across the full temperature and voltage range. For new designs, consider parts with dedicated GPIO instead—this workaround increases validation effort and long-term reliability risk.
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ATMEGA16HVB-8X3 CAD Models
Microchip Technology ATMEGA16HVB-8X3 PCB symbols & footprints
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