ATMEGA16HVA-4CKUR - 8-bit AVR MCU 16KB 4MHz 36-LGA | Microchip
MPN: ATMEGA16HVA-4CKUR β Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ATMEGA16HVA-4CKUR Overview
A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, program memory, data memory, and peripherals on one die. The AVR ATmega family is an 8-bit RISC architecture widely deployed in embedded control, and the HVA variant adds battery-management-oriented analog functionality on the same AVR core, sitting within the broader hierarchy of semiconductor -> integrated circuit -> microcontroller -> 8-bit MCU -> AVR ATmega.
Key features include the AVR RISC core executing most instructions in a single clock cycle for efficient MIPS-per-MHz performance, the wide 1.8V to 9V supply range that allows direct connection to multi-cell battery stacks, and the compact 36-LGA footprint suited to space-constrained smart battery packs. The 16KB self-programming FLASH supports in-system updates, while 256B EEPROM retains calibration data through power loss.
Technically, the HVA family (sometimes referenced by the code name Batman in distributor listings) integrates high-voltage-tolerant circuitry on the AVR platform, letting one MCU supervise battery cells, voltage, and current measurements that would otherwise require high-voltage signal conditioning in front of a standard MCU.
Typical applications include smart battery pack management, battery chargers, power tools, portable industrial equipment, and embedded controllers that must sense cell voltages up to 9V directly.
Design consideration: verify the 4MHz maximum frequency and 512B SRAM are sufficient for your firmware footprint and control-loop timing before committing the footprint, since the HVA family is more memory-constrained than general-purpose ATmega parts.
This page adds value beyond the manufacturer datasheet by consolidating distributor pricing tiers, verified drop-in alternatives, application guidance, and compliance data in one AI-citable reference. Pricing shown as of 2026-09-17.
Drop-in alternatives for ATMEGA16HVA-4CKUR β 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-4CKUR (same form factor and footprint) β differing in Program Memory Size, EEPROM Size, Package, Program Memory Type, Series.
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ATMEGA16HVA-4CKU
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View Datasheet βATMEGA8HVA-4CKU
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA32HVA-4CKU
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATMEGA16HVA-4CKUR Maximum Ratings & Electrical Characteristics
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 4 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 16KB (8K x 16) |
| EEPROM Size | 256B |
| RAM Size | 512B |
| Supply Voltage Range | 1.8 V to 9 V |
| Package / Case | 36-LGA (6.5 x 3.5 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| Series | AVR ATmega (HVA battery management) |
| RoHS Status | Green (per Mouser GRN1 listing) |
ATMEGA16HVA-4CKUR 36-lga (6.5 x 3.5 mm) Pin Configuration Guide
Pin configuration for ATMEGA16HVA-4CKUR (36-lga (6.5 x 3.5 mm) 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-4CKUR.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMEGA16HVA-4CKUR is suitable for 6 applications: Smart Battery Pack Management, Battery Chargers, Portable Power Tools, Industrial Battery-Backed Equipment, Portable Consumer Electronics, Embedded Monitoring and Gauging Systems.
Smart Battery Pack Management
The ATMEGA16HVA-4CKUR is purpose-built for smart battery packs: its 1.8V to 9V supply rating and high-voltage-tolerant AVR HVA analog circuitry allow direct connection to multi-cell stacks, monitoring cell voltages and pack current without external level-shifting front ends. The 16KB FLASH holds gauge, protection, and SMBus-style communication firmware, while the 256B EEPROM stores lifetime calibration and cycle-count data across power cycles. In a typical smart battery, the MCU supervises cell balancing decisions and communicates state-of-charge data to the host. Because the 4MHz AVR core executes most instructions in a single cycle, control-loop latency for protection thresholds remains deterministic, an important property for battery safety cutoffs.
Recommended
Battery Chargers
In smart chargers for portable equipment, the ATMEGA16HVA-4CKUR supervises charge termination, cell voltage thresholds, and fault conditions. Its 9V maximum rating lets it monitor multi-cell charging voltages directly, and the integrated high-voltage analog channels of the HVA family reduce bill-of-materials count versus a standard MCU plus comparator/discrete-sense network. The 4MHz clock is adequate for charger state machines, which are inherently slow compared to the core. Designers benefit from the 16KB self-programming FLASH: charging profiles can be updated in the field through the boot-loader capability without replacing hardware. As a cost consideration, the compact 36-LGA (6.5 x 3.5 mm) footprint keeps charger PCB area small for consumer form factors.
Recommended
Portable Power Tools
Cordless power-tool packs experience high current transients and wide temperature swings; the industrial-temperature-rated ATMEGA16HVA-4CKUR (-40C to +85C) supervises cell voltage and pack protection in such environments. Its 1.8V to 9V input range covers common tool-pack cell configurations directly, and the 512B SRAM accommodates protection state machines and filtering buffers. The robust AVR architecture with single-cycle instruction execution gives predictable response times for over-current and over-voltage cutoffs, and the small 36-LGA package mounts on the battery management PCB inside the tool handle or pack housing. EEPROM storage of usage statistics supports pack warranty tracking and remaining-useful-life estimation in the tool ecosystem.
Recommended
Industrial Battery-Backed Equipment
Industrial devices with battery backup - data loggers, sensors, emergency lighting controllers - need a controller that can run from and monitor the backup cell stack. The ATMEGA16HVA-4CKUR's wide 1.8V to 9V operating range means one MCU can bridge the main supply and battery domains. Its 256B EEPROM retains configuration and event logs during power loss, and the 16KB FLASH supports moderately complex logging firmware. The AVR's low clock requirement (4MHz maximum) keeps dynamic power consumption low, extending backup runtime. In industrial settings, the industrial temperature grade and green/RoHS-style construction simplify deployment in globally distributed equipment subject to environmental directives.
Recommended
Portable Consumer Electronics
Consumer products with rechargeable batteries - headphones, handheld instruments, small appliances - embed battery supervision in the main board. The ATMEGA16HVA-4CKUR integrates this role in a 6.5 x 3.5 mm footprint, freeing board space in compact enclosures. The high-voltage HVA inputs tolerate charger transients that a standard 5.5V MCU would need protection against, improving robustness in consumer products where charger quality varies. The 16KB FLASH is sufficient for gauge firmware plus a small application, and self-programming FLASH allows feature updates in the field. Green/RoHS-style (GRN per Mouser) construction supports consumer-market compliance requirements across major regions.
Recommended
Embedded Monitoring and Gauging Systems
Standalone monitoring nodes - fuel gauges, voltage recorders, cell testers - benefit from the ATMEGA16HVA-4CKUR's combination of high-voltage analog inputs and an 8-bit RISC core. The 9V-rated front end measures cells directly, while 4MHz single-cycle execution processes sampling loops with deterministic timing. The 512B SRAM buffers sampled data between communication or logging events, and the 256B EEPROM holds calibration constants that production can write once at final test. Because the device belongs to the AVR ATmega family, it is programmable with standard Microchip AVR development tools and in-system programmers, lowering tooling cost for small-batch monitoring products and test fixtures in battery production lines.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA16HVA-4CKUR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA16HVA-4CKU | ATMEGA8HVA-4CKU | ATMEGA32HVA-4CKU |
|---|---|---|---|---|
| Package | 36-LGA (6.5 x 3.5 mm) | 36-LGA (6.5 x 3.5 mm) - same | 36-LGA (6.5 x 3.5 mm) - same | 36-LGA (6.5 x 3.5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (FLASH) | 16KB (8K x 16) | 16KB (8K x 16) | 8KB | 32KB |
| Core / Speed | 8-bit AVR, 4 MHz | 8-bit AVR, 4 MHz | 8-bit AVR, 4 MHz | 8-bit AVR, 4 MHz |
| SRAM | 512B | 512B | 512B | 2KB |
| EEPROM | 256B | 256B | 256B | 1KB |
| Supply Voltage | 1.8 V to 9 V | 1.8 V to 9 V | 1.8 V to 9 V | 1.8 V to 9 V |
| Primary Use Case | Battery management, balanced memory (16KB) | Identical function; tray packaging | Cost-reduced small-firmware packs | Complex gauge/protection firmware |
Key Differentiators
- Dedicated battery-management analog on an AVR core (vs ATMEGA168PA-AUR)
- More memory on the identical footprint (vs ATMEGA8HVA-4CKU)
- Memory headroom for growth without redesign (vs ATMEGA32HVA-4CKU)
Design Notes
Design the supply network around the wide 1.8V to 9V input range: the HVA family tolerates direct battery-stack connection, but verify the operating point of every peripheral block across the full battery discharge curve (a fully charged to fully discharged stack can swing several volts). Decouple VDD/AVDD with 100nF ceramics at each supply pin plus bulk capacitance at the battery connector. Confirm transient immunity against charger pulses, since the 9V rating is a steady-state limit - consult the absolute maximum section of the manufacturer datasheet for exact transient derating.
The 512B SRAM is a hard constraint: a deep call stack plus buffer allocations can overflow silently, producing intermittent corruption. Estimate worst-case stack depth during firmware design and consider moving to ATMEGA32HVA (2KB SRAM, same 36-LGA footprint) if dynamic usage approaches 300 bytes. Likewise, the 4MHz maximum clock means timing-critical bit-banged protocols have little headroom - prefer hardware peripherals, and verify the peripheral set in the datasheet before assuming UART/I2C availability.
The 36-LGA (6.5 x 3.5 mm) footprint uses land-grid pads under the body; define PCB pads per the manufacturer datasheet land-pattern drawing rather than copying a generic QFN pattern, because LGA pad geometry and paste requirements differ. Keep high-voltage cell-sense routing away from noisy digital traces, and provide solid ground pour under the package. Since the CKUR suffix denotes reel packaging, ensure your assembly process MSL bake policy matches the moisture-sensitivity level stated in the latest datasheet revision.
Compliance Information
Mouser lists the part with 'GRN' (green) designation, indicating Microchip lead-free/RoHS-style construction. Full REACH, halogen-free, and conflict-minerals certificates were not included in the retrieved data - confirm via Microchip product compliance documents.
