ATMEGA16HVA-4TUR - 8-bit AVR Battery Management MCU | Microchip
MPN: ATMEGA16HVA-4TUR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.14 | $3.14 |
| 10 | $3 | $30.00 |
| 100 | $2.85 | $285.00 |
| 500 | $2.75 | $1,375.00 |
| 1,000 | $2.64 | $2,640.00 |
ATMEGA16HVA-4TUR Overview
A battery management MCU is a specialized class of 8-bit microcontroller that integrates precision analog monitoring peripherals with a general-purpose processor core, forming part of the broader power management and embedded control hierarchy. The ATMEGA16HVA belongs to this category, targeting 1-cell and 2-cell Li-ion battery packs that require security, authentication, accurate cell monitoring, and high utilization of stored cell energy.
Key features include the high-performance, low-power AVR RISC architecture delivering up to 4 MIPS throughput at 4 MHz, an operating voltage window of 1.8 V to 9 V that directly supports one or two Li-ion cells, and 16 KB of self-programmable Flash enabling field firmware updates and secure boot implementations. The integrated battery management peripherals reduce external component count in pack-side electronics.
Technically, the device combines the AVR core with dedicated cell-voltage measurement and safety functions tailored for Li-ion applications. The self-programmable Flash and EEPROM array support secure code storage and parameter logging, while the low-power design maximizes usable energy from the cells it protects.
Typical applications include 1-cell and 2-cell Li-ion battery pack management for portable devices, smart battery authentication and security systems, and battery-powered industrial portable instruments where accurate monitoring extends runtime.
Design consideration: the 4 MHz speed grade means time-critical loops should be kept simple, and the 1.8 V to 9 V input range must be respected across the full cell discharge curve, including end-of-discharge conditions.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for ATMEGA16HVA-4TUR — 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 ATMEGA16HVA-4TUR (same form factor and footprint) — differing in Package, Program Memory Size, Supply Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMEGA16HVA-4TU
✅ Drop-In✓ In Stock
$2.42 / Unit
View Datasheet →ATMEGA16HVA-4CKUR
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →ATMEGA169V-8AI
✅ Drop-In✓ In Stock
$2.58 / Unit
View Datasheet →ATMEGA16HVA-4TUR Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit AVR RISC |
| Core Series | AVR ATmega (Batman) |
| Maximum Clock Frequency | 4 MHz |
| Program Memory Size | 16 KB (8K x 16) Flash |
| Program Memory Type | In-System Self-Programmable Flash |
| SRAM Size | 512 bytes (512 x 8) |
| EEPROM Size | 256 bytes |
| Supply Voltage Range | 1.8 V to 9 V |
| Throughput | Up to 4 MIPS at 4 MHz |
| Data Bus Width | 8-bit |
| Target Application | 1-cell and 2-cell Li-ion battery management |
| Package | 28-TSOP |
| Mounting Type | Surface Mount |
ATMEGA16HVA-4TUR 28-tsop Pin Configuration Guide
Pin configuration for ATMEGA16HVA-4TUR (28-tsop 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 ATMEGA16HVA-4TUR.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMEGA16HVA-4TUR is suitable for 6 applications: 1-Cell Li-ion Battery Pack Management, 2-Cell Li-ion Smart Battery Packs, Battery Authentication and Security, Portable Industrial Instruments, Smart Battery Host Communication, Low-Cost Embedded Control with Battery Backup.
1-Cell Li-ion Battery Pack Management
The ATMEGA16HVA-4TUR is purpose-built for 1-cell Li-ion pack electronics, where its 1.8 V to 9 V operating range directly accommodates a single Li-ion cell across the entire discharge curve from about 4.2 V down to deep-discharge cutoffs near 2.5 V, eliminating a dedicated regulator stage and conserving cell energy. Its integrated battery management peripherals perform accurate cell-voltage monitoring and safety supervision, while 16 KB of in-system self-programmable Flash stores authentication code that guards against counterfeit pack substitution. In a typical pack-side topology, the MCU sits between the cell and the protection FETs, cycling at up to 4 MHz only when measurement or communication tasks demand it to minimize quiescent drain. This suits smart phone, wearable, and portable device packs where both energy utilization and pack security are design priorities.
Recommended
2-Cell Li-ion Smart Battery Packs
For 2-cell series Li-ion packs, the ATMEGA16HVA-4TUR's 9 V maximum supply covers two fully charged cells (about 8.4 V) with margin, while the 1.8 V floor supports operation as cells deplete toward end of discharge. Per Microchip's product definition, the device provides the accurate monitoring and high cell-energy utilization required in this topology, measuring each cell node and supervising charge and discharge conditions. The 256-byte EEPROM retains pack history, cycle counts, and calibration data through power cycles, supporting fuel-gauging and warranty tracking. Smart battery authentication is executed from the 16 KB Flash, allowing secure challenge-response protocols with the host system. The 28-TSOP surface-mount package fits compact pack PCBs typical of power tools, medical portables, and industrial handheld instruments using dual-cell power.
Recommended
Battery Authentication and Security
The ATMEGA16HVA-4TUR addresses the security and authentication requirements that Microchip explicitly cites for the ATMEGA16HVA family. Host systems can verify genuine packs using challenge-response authentication code resident in the 16 KB in-system self-programmable Flash, preventing counterfeit or cloned batteries from connecting to chargers and devices. The self-programmability of the Flash enables field updates of authentication keys and firmware while retaining the 256-byte EEPROM for secret or parameter storage. Designers typically implement the authentication engine as interrupt-driven firmware running on the 4 MHz AVR core, keeping response latency low for host SMBus-style queries. This application is common in OEM battery ecosystems, medical device packs, and premium portable products where unauthorized pack substitution creates safety and warranty liability.
Recommended
Portable Industrial Instruments
Battery-powered portable industrial instruments, such as handheld meters, data loggers, and diagnostic tools, benefit from the ATMEGA16HVA-4TUR's combination of low-voltage AVR operation and integrated pack supervision. The 4 MHz throughput (up to 4 MIPS) is sufficient for instrument control loops, user interface scanning, and measurement sequencing, while the wide 1.8 V to 9 V supply window allows the MCU to ride directly on the battery rail, simplifying the power tree and improving energy extraction across the discharge profile. The 512-byte SRAM buffers measurement results and communication payloads, and 16 KB Flash accommodates calibration routines and protocol stacks. Because the MCU manages the pack itself, designers gain runtime telemetry and safe cutoff behavior without a separate battery management IC, reducing BOM cost and board area in compact enclosures.
Recommended
Smart Battery Host Communication
In smart battery systems, the ATMEGA16HVA-4TUR commonly serves as the pack-side controller that communicates state-of-charge, health, and authentication data to the host device. Its 4 MHz AVR core executes the communication protocol while the integrated monitoring inputs track cell voltage in parallel, so the host always receives current pack status. The 512-byte SRAM provides working space for packet assembly and protocol state machines, and the 256-byte EEPROM stores static identification data such as manufacturer, chemistry, and serial number fields. Because the supply range spans 1.8 V to 9 V, the same firmware and hardware design scales across 1-cell and 2-cell pack variants, reducing qualification effort for product families. This application suits laptops, medical monitors, and industrial equipment using proprietary smart battery interfaces.
Recommended
Low-Cost Embedded Control with Battery Backup
Beyond dedicated packs, the ATMEGA16HVA-4TUR functions as a general-purpose 8-bit AVR controller in systems where a battery-backed supply exists, such as security sensors, metering nodes, and remote telemetry units. The wide 1.8 V to 9 V tolerance means the MCU survives brownout and switchover events without external supervision circuitry for the supply window, and the 4 MHz speed grade keeps dynamic power low during standby operation. The 16 KB in-system self-programmable Flash supports field firmware upgrades over the communication link, extending deployed lifetime, while EEPROM holds configuration across power loss. Engineers choosing this device over a standard ATmega gain the bonus battery monitoring analog set at similar cost, effectively integrating pack supervision into the main controller and removing a separate battery-management component from the schematic.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA16HVA-4TUR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA16HVA-4TU | ATMEGA16HVA-4CKUR | ATMEGA169V-8AI |
|---|---|---|---|---|
| Package | 28-TSOP | 28-TSOP - same | 28-TSOP - same | 28-TSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Clock | AVR 8-bit, 4 MHz | AVR 8-bit, 4 MHz | AVR 8-bit, 4 MHz | AVR 8-bit, 8 MHz |
| Supply Voltage | 1.8 V to 9 V | 1.8 V to 9 V | 1.8 V to 9 V | 1.8 V to 5.5 V (low-voltage AVR grade) |
| Battery Management Peripherals | Yes (Li-ion 1/2-cell) | Yes (Li-ion 1/2-cell) | Yes (Li-ion 1/2-cell) | No (LCD AVR, general purpose) |
Key Differentiators
- Integrated Li-ion battery management with 1.8 V to 9 V direct cell connection (vs ATMEGA169V-8AI)
- Built-in security and authentication for pack anti-counterfeiting (vs ATMEGA16A-AU)
- Same silicon available in tube for development (vs ATMEGA16HVA-4TU)
Design Notes
The 1.8 V to 9 V supply range lets the ATMEGA16HVA-4TUR connect across one or two Li-ion cells directly. However, when two cells are near full charge (approximately 8.4 V total), the internal regulators dissipate the excess; verify total current draw of your GPIO load and peripherals at high Vin to keep internal power within datasheet limits. Estimated: a 10 mA load at 9 V input versus the internal core requirement is modest, but add margin for communication bursts. Place a 100 nF ceramic decoupling capacitor at the supply pin close to the package and consider bulk capacitance sized for pack transients.
The ATMEGA16HVA-4TUR speed grade is 4 MHz, not the 8-20 MHz of standard ATmega parts. Do not set clock fuses or external crystal assumptions copied from ATmega16A/ATmega168 designs; an over-clock condition violates the datasheet and battery monitoring accuracy. Similarly, pin assignments on this 28-TSOP battery management device differ from general-purpose 28-pin AVRs - cell-sense inputs are not interchangeable with generic GPIO. Always start from the official Microchip ATMEGA16HVA datasheet rather than porting pin maps from other ATmega family members.
For pack-side layouts, route cell-voltage sense traces differentially and away from high-current discharge paths to protect measurement accuracy; the ATMEGA16HVA monitoring function depends on clean sense lines for accurate Li-ion supervision. Keep the 28-TSOP device decoupled with 100 nF at the pin plus local bulk capacitance, and star-ground the sense references at the cell terminal. If the pack includes protection FETs, isolate their switching nodes from the MCU sense inputs to prevent false monitoring readings during charge and discharge transitions.
Compliance Information
Compliance statuses were not stated in the verified distributor data retrieved for this part. Confirm RoHS/REACH and lead-free status on the Microchip official product page or via distributor certificate of conformance before regulated-market production.
