ATMEGA16HVB-8X3R - 8-bit AVR MCU, 4-25V, 8MHz | Microchip
MPN: ATMEGA16HVB-8X3R ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $3.02 | $1,510.00 |
| 1,000 | $2.7 | $2,700.00 |
ATMEGA16HVB-8X3R Overview
An 8-bit microcontroller (MCU) is an integrated circuit that combines a processor core, program and data memory, and peripherals such as timers, ADCs, and communication interfaces on a single chip. Within the power-management hierarchy, the ATmega HVB family is a battery-management MCU class: an AVR core optimized for single-cell and multi-cell battery supervision in portable and industrial power systems.
Key features include the wide 4V to 25V operating supply range, which allows direct connection to battery packs without an external regulator; the AVR RISC architecture executing most instructions in a single clock cycle for up to 8 MIPS at 8MHz; in-system programmable 16KB FLASH for field firmware updates; and integrated battery-management peripherals including ADC channels suited for cell voltage and current measurement.
The device is fabricated in Microchip's AVR process optimized for low-power operation, with power-saving sleep modes and a battery-management interrupt structure that lets the core sleep between measurement events, extending battery runtime. The ATmega16HVB integrates dual power domains so the MCU logic can run from a regulated VCC while monitoring the raw battery rail.
Typical applications include single- and multi-cell battery chargers, battery pack supervision and gauging, power tools, portable medical devices, and uninterruptible power supply front-end controllers, where wide-voltage operation and on-chip measurement peripherals reduce external component count.
When designing with this device, verify the 4V to 25V supply envelope against the worst-case battery stack voltage, and confirm programming-tool support, since HVB-family devices use the AVR ISP/DebugWire interfaces.
This page synthesizes distributor pricing, drop-in alternatives, application guidance, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for ATMEGA16HVB-8X3R — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATMEGA16HVB-8X3R (same form factor and footprint) — differing in Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMEGA16HVB-8X3
✅ Drop-In📋 Reference alternative (not in catalog)
ATMEGA32HVB-8X3R
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$3.42 / Unit
View Datasheet →ATMEGA32HVB-8X3
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$3.1 / Unit
View Datasheet →ATMEGA16HVB-8X3R Maximum Ratings & Electrical Characteristics
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 8 MHz |
| Program Memory Size | 16 KB (8K x 16) FLASH |
| RAM Size | 1 KB |
| EEPROM Size | 512 B |
| Supply Voltage Range | 4 V to 25 V |
| Package | 44-TSSOP |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C |
| Series | AVR ATmega HVB (battery management) |
| Packaging | Tape & Reel (R suffix) |
| Peripherals | Battery management, PWM, WDT |
| RoHS Status | Compliant |
ATMEGA16HVB-8X3R 44-tssop Pin Configuration Guide
Pin configuration for ATMEGA16HVB-8X3R (44-tssop package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATMEGA16HVB-8X3R.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMEGA16HVB-8X3R is suitable for 6 applications: Battery Pack Supervision, Battery Chargers, Power Tools, Portable Medical Devices, UPS and Backup Power Front-Ends, IoT Sensor Nodes with Battery Power.
Battery Pack Supervision
The ATMEGA16HVB-8X3R fits battery pack supervision because its 4V to 25V direct supply spans one-cell through multi-cell lithium stacks without an input regulator, cutting BOM cost and board area. The on-chip ADC measures cell voltages and pack current, while 512B EEPROM stores calibration constants, cycle counts, and fault logs through power cycles. The AVR core sleeps between measurement events in power-down mode, keeping quiescent drain low enough for packs that sit in storage for months. Firmware implements over-voltage, under-voltage, and over-current thresholds, driving protection FETs through GPIO. The 16KB FLASH provides ample room for state-of-charge estimation routines and communicates results to a host over UART or I2C-style bit-banged links.
Recommended
Battery Chargers
In smart charger designs, the ATMEGA16HVB-8X3R serves as the charge-control MCU: its wide supply range lets it sit directly on the charger input rail from 4V to 25V, covering common adapter voltages without regulation. The integrated ADC reads battery voltage and charge current through external sense resistors, and PWM outputs drive buck or linear charging stages with closed-loop control. Timer peripherals implement constant-current, constant-voltage, and trickle phases with precise timing, while the watchdog timer guarantees recovery from firmware faults. The 8MHz AVR core executes charging state machines with headroom, and in-system programmable FLASH allows charge profiles to be retuned in the field for different cell chemistries without recalling units.
Recommended
Power Tools
Cordless power-tool electronics demand controllers that survive harsh pack voltages and high vibration environments; the ATMEGA16HVB-8X3R meets both needs with its industrial -40C to +85C temperature rating and 4V to 25V direct-battery operation. The MCU monitors trigger position, cell voltage, and motor current through its ADC, enforcing thermal and over-current cutouts that protect lithium cells during stall events. Its robust AVR architecture and watchdog supervision keep the tool safe after battery hot-swap transients. The 44-pin TSSOP offers enough GPIO for LED fuel gauges, brake control, and fuel-gauge communication with the pack. Tape-and-reel supply supports automated high-volume assembly lines typical of power-tool manufacturing.
Recommended
Portable Medical Devices
Battery-powered medical instruments such as glucose meters, infusion pump accessories, and portable diagnostic sensors benefit from the ATMEGA16HVB-8X3R's combination of wide-voltage battery operation, low sleep-mode current, and deterministic AVR core. The ADC provides the analog front-end for sensor conditioning, while EEPROM securely retains calibration data required for measurement accuracy audits. Because the MCU runs directly from the battery stack, the power tree is simplified, reducing the number of failure points in safety-relevant designs. The industrial temperature range supports sterilization-adjacent environments, and in-field FLASH reprogramming enables firmware updates for feature or regulatory revisions without physical rework of deployed devices.
Recommended
UPS and Backup Power Front-Ends
Small uninterruptible and backup power systems use the ATMEGA16HVB-8X3R as the battery-front-end controller, where its 25V maximum supply covers 12V lead-acid and multi-cell lithium buses directly. The ADC continuously measures bus voltage and charge current, the firmware executes temperature-compensated charging curves, and GPIO drives relays or FETs for source-changeover control. EEPROM logs outage counts and battery health metrics for predictive maintenance reporting over a serial link to the main system controller. Power-down sleep modes keep standby consumption minimal while the battery float-charges, extending overall system efficiency and battery service life across frequent grid events.
Recommended
IoT Sensor Nodes with Battery Power
Industrial IoT nodes powered directly from battery or energy-harvesting rails use the ATMEGA16HVB-8X3R to combine sensing, computation, and communication in one low-cost chip. The wide 4V to 25V input tolerates solar-charged lead-acid or lithium stacks without regulation, while deep sleep modes between measurement windows minimize average current draw. The ADC samples analog sensors, the AVR core filters and packages data, and UART/SPI-style interfaces pass results to a radio module. The industrial temperature rating and watchdog supervision make the node field-deployable, and in-system programmable FLASH allows sensor calibration and protocol updates to be pushed remotely over the air after initial deployment.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA16HVB-8X3R — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA16HVB-8X3 | ATMEGA32HVB-8X3R | ATMEGA32HVB-8X3 |
|---|---|---|---|---|
| Package | 44-TSSOP | 44-TSSOP - same | 44-TSSOP - same | 44-TSSOP - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) |
| Program Memory (FLASH) | 16 KB (8K x 16) | 16 KB | 32 KB | 32 KB |
| RAM Size | 1 KB | 1 KB | 2 KB | 2 KB |
| Supply Voltage | 4 V to 25 V | 4 V to 25 V | 4 V to 25 V | 4 V to 25 V |
| Maximum Speed | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Packaging Format | Tape & Reel (R suffix) | Tray (no R suffix) | Tape & Reel | Tray |
Key Differentiators
- Wide 4V to 25V direct battery operation (vs ATMEGA16A-AU)
- Memory headroom upgrade path (vs ATMEGA32HVB-8X3R)
- Integrated battery-management peripherals (vs Generic ATmega168 family)
Design Notes
Design the input protection network for the full 4V to 25V envelope even if your battery stack nominally sits lower. Multi-cell packs can exceed nominal voltage during charge, and inductive loads such as motors can inject transient spikes well above the battery voltage. Add a series resistor or PTC on the supply pin, a TVS diode clamped below 25V, and bulk capacitance sized for hot-battery-insertion inrush. Because the HVB integrates a dual power domain (battery rail plus MCU VCC), follow the Microchip datasheet sequencing requirements between VBAT and VCC during power-up and hot-swap events to avoid latch-up.
Place 100nF ceramic decoupling capacitors directly across the VCC and GND pins and a second 100nF on the battery monitoring domain, with at least 4.7uF bulk near the supply entry. Route battery sense lines to the ADC as short differential pairs away from PWM and motor-drive traces; the sense resistors used for current measurement should use Kelvin connections to the ADC inputs. Keep the in-system programming header (ISP) accessible on the production PCB, since the 16KB FLASH is field-updatable and the header costs almost nothing but saves rework when firmware changes are required.
Do not substitute a standard 5.5V-max ATmega (such as ATMEGA16A) onto an HVB footprint - even though 44-pin TSSOP AVR footprints look similar, pin functions and voltage ratings differ and the standard part will be destroyed above 5.5V. Verify fuse settings for clock source and debug interface before mass programming, since incorrect fuse configuration can disable ISP access. Finally, confirm the exact supply range of your battery chemistry: a 6S lithium stack can exceed the 25V maximum and requires a pre-regulator or a different supervision architecture.
Compliance Information
RoHS compliant and lead-free per Microchip Technology product data. REACH, halogen-free, and conflict-minerals declarations must be confirmed against the official Microchip compliance documents for this exact MPN.
