ATMEGA3250PV-10AU - 8-bit AVR MCU 32KB 10MHz | Microchip
MPN: ATMEGA3250PV-10AU ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.12 | $3.12 |
| 10 | $2.95 | $29.50 |
| 100 | $2.6224 | $262.24 |
| 500 | $2.48 | $1,240.00 |
| 1,000 | $2.31 | $2,310.00 |
ATMEGA3250PV-10AU Overview
An 8-bit microcontroller integrates a processor core, program memory, data memory and peripherals on a single chip. Within the power-management hierarchy, the ATmega family sits in the general-purpose MCU category: AVR RISC core -> 8-bit microcontroller -> embedded MCU -> semiconductor IC. The AVR core executes most instructions in a single clock cycle, achieving throughput of up to 10 MIPS at 10 MHz while consuming minimal power.
Key features include 131 powerful instructions (most single-cycle), the picoPower P suffix low-power process, 32 general purpose working registers, and In-System Programmable (ISP) FLASH enabling firmware updates on the production line. The V speed grade supports operation from 1.8 V to 5.5 V, covering battery-powered 3.3 V designs as well as industrial 5 V systems, with full static operation between 0 MHz and 10 MHz across the range.
Technically, the device pairs its AVR RISC core with hardware multiplier support, multiple timer/counters with PWM outputs, USART serial communication, an on-chip 10-bit ADC, and programmable Watchdog Timer with its own oscillator. Five sleep modes (including Idle, ADC Noise Reduction and Power-down) allow the designer to match power consumption to the application profile, which is why the P-series was positioned for battery and low-power industrial products.
Typical applications include industrial control panels with LCD and keypad interfaces, battery-powered instrumentation and metering, building automation nodes, and legacy AVR-based product lines requiring a picoPower-class drop-in MCU.
Design-wise, remember that the -10 speed grade limits maximum clock frequency; at 5 V you may run up to 10 MHz, and for faster execution step up to the ATMEGA3250P-20AU 20 MHz variant in the same footprint. Decouple VCC/AVCC with 0.1 uF ceramics close to each pin pair.
This page synthesizes distributor pricing (as of 2026-09-17), drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for ATMEGA3250PV-10AU — 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 ATMEGA3250PV-10AU (same form factor and footprint) — differing in Package, Supply Voltage Range, Operating Temperature, Speed, Connectivity.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMEGA3250PA-AUR
✅ Drop-In✓ In Stock
$2.98 / Unit
View Datasheet →ATMEGA3250P-20AU
✅ Drop-In✓ In Stock
$1.8 / Unit
View Datasheet →ATMEGA3250-16AU
✅ Drop-In✓ In Stock
$5.74 / Unit
View Datasheet →ATMEGA3250PV-10AU Maximum Ratings & Electrical Characteristics
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 10 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 32 KB (16K x 16) |
| SRAM Size | 2 KB |
| EEPROM Size | 1 KB |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Package | 100-TQFP (14 x 14 mm, 0.8 mm pitch) |
| Mounting Type | Surface Mount |
| Architecture | AVR enhanced RISC, 131 instructions |
| Peripherals | Brown-out Detect/Reset, LCD, POR, PWM, WDT |
| Life Cycle Stage | ACTIVE |
| Low Power Feature | picoPower (P series) |
ATMEGA3250PV-10AU 100-tqfp (14 x 14 mm, 0.8 mm pitch) Pin Configuration Guide
Pin configuration for ATMEGA3250PV-10AU (100-tqfp (14 x 14 mm, 0.8 mm pitch) 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 ATMEGA3250PV-10AU.
Refer to the datasheet for full pin configuration.
Typical Applications
ATMEGA3250PV-10AU is suitable for 6 applications: Industrial LCD Control Panels, Battery-Powered Metering and Instrumentation, Building Automation Nodes, Legacy AVR Product Sustainment, Handheld Test and Measurement Tools, Motor Control and Actuator Drivers.
Industrial LCD Control Panels
The ATMEGA3250PV-10AU integrates a segment-LCD controller, which is the defining feature for industrial control panels and human-machine interfaces that must drive dozens of LCD segments without an external display driver. Running at 10 MHz from a 1.8 V to 5.5 V rail, the AVR core delivers up to 10 MIPS for keypad scanning, protocol handling and display refresh simultaneously. The 100-pin TQFP exposes enough general purpose I/O to combine LCD drive, relays and USART communication on a single MCU. Because the LCD controller operates in low-power sleep modes, panel designs achieve low standby current while keeping the display visible, reducing overall system power versus discrete LCD-driver-plus-MCU solutions.
Recommended
Battery-Powered Metering and Instrumentation
For utility meters, portable instrumentation and data loggers, the ATMEGA3250PV-10AU combines the picoPower P-series process with five sleep modes, letting designers trade wake-up latency against microamp-level standby current. The on-chip 10-bit ADC digitizes sensor inputs without an external converter, while the 1 KB EEPROM stores calibration constants and consumption registers through power cycles. The wide 1.8 V to 5.5 V supply range allows direct operation from two alkaline cells or a single lithium cell via a simple regulator. Running at only 10 MHz, the core draws less dynamic current than 20 MHz grades, which matters in always-on duty cycles where energy per instruction dominates battery life.
Recommended
Building Automation Nodes
Building automation nodes - occupancy sensors, thermostat heads, damper actuators - need long-lived, low-cost controllers with serial connectivity. The ATMEGA3250PV-10AU provides a hardware USART for RS-485 fieldbus attachment, PWM-capable timers for actuator drive, and a programmable Watchdog Timer with its own oscillator for autonomous fault recovery in unattended installations. The 32 KB In-System Programmable FLASH supports field firmware updates over the bus, avoiding physical recalls. Because the device tolerates 1.8 V to 5.5 V supplies, the same hardware platform can serve both 3.3 V sensor heads and 5 V actuator variants, simplifying inventory and qualification across a building-automation product family.
Recommended
Legacy AVR Product Sustainment
Thousands of legacy products were designed around the ATmega3250P generation and still require genuine, active-lifecycle silicon. The ATMEGA3250PV-10AU remains listed as ACTIVE by distributors as of 2026-09-17, making it the sustainment choice for boards that cannot tolerate redesign. For obsolescence-proofing, the ATMEGA3250PA-AUR is the pin-to-pin picoPower refresh validated on the same 100-TQFP footprint, allowing a second-source strategy without PCB changes. Firmware compiled with conservative timing assumptions runs identically across the speed grades, so procurement teams can alternate between the 10 MHz, 16 MHz and 20 MHz family members to survive allocation cycles while keeping one approved layout and test plan.
Recommended
Handheld Test and Measurement Tools
Portable multimeters, cable testers and environmental probes benefit from the ATMEGA3250PV-10AU's balance of compute and power. The 10-bit ADC samples analog front ends for measurement channels, timers generate test stimulus signals or PWM outputs, and the USART streams readings to a PC or display module. The picoPower sleep modes extend battery service intervals, and the 2 KB SRAM buffers logged data points between EEPROM write cycles. Operation down to 1.8 V lets the MCU keep functioning as the battery discharges, providing low-battery warning behavior without a boost converter - a common cost and efficiency advantage in handheld instrument architectures that must run for months between battery replacement.
Recommended
Motor Control and Actuator Drivers
Small motor and actuator applications - valve drivers, fan controllers, vending mechanisms - use the ATMEGA3250PV-10AU's multiple timer/counters with PWM outputs to generate speed and position control signals at 10 MHz timing resolution. The brown-out detector and power-on reset ensure deterministic startup of mechanical loads during brownout events, while the Watchdog Timer recovers firmware from electrical noise induced by motor switching. The AVR single-cycle instruction set executes PI control loops deterministically at kHz rates. Driving the MCU directly from the same 5 V rail as the motor driver eliminates level shifting, and the abundant 100-pin I/O supports limit-switch, encoder and status-feedback wiring on one package.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA3250PV-10AU — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA3250PA-AUR | ATMEGA3250P-20AU | ATMEGA3250-16AU |
|---|---|---|---|---|
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| FLASH | 32 KB (16K x 16) | 32 KB | 32 KB | 32 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB |
| Low Power Process | picoPower (P series) | picoPower (PA refresh) | picoPower (P series) | Standard process |
Key Differentiators
- Integrated segment-LCD controller in the base MCU (vs ATMEGA3250P-20AU)
- Wide 1.8 V to 5.5 V supply range for battery designs (vs ATMEGA3250-16AU)
- Active lifecycle status versus hard-to-source legacy MCU (vs ATMEGA3250PA-AUR)
Design Notes
The PV-10AU speed grade supports the full 1.8 V to 5.5 V supply range, but note that clock frequency capability scales with supply voltage in AVR devices - verify the voltage/frequency curve in the manufacturer datasheet for your operating point before fixing the crystal frequency. Decouple VCC and AVCC separately with 100 nF ceramics placed within 5 mm of each pin, and connect AVCC to VCC through a low-pass LC filter when using the ADC on a noisy digital rail. Estimated: at 5 V and 10 MHz, active current is in the low-mA class per typical AVR P-series behavior; confirm exact figures in the datasheet electrical characteristics table.
The 100-TQFP (0.8 mm pitch) land pattern requires solder-mask-defined or non-solder-mask-defined pads per IPC-7351 guidance; use the manufacturer's recommended footprint from the package drawing. Place the 100 nF decoupling capacitor for each supply pin pair on the same layer as the IC to shorten the return path, and provide at least one solid ground plane. The RESET line should have a 10 kO pull-up and optional 100 nF to ground for ISP programming robustness. Route the JTAG (TCK/TMS/TDO/TDI) traces to a header even if unused, to preserve in-circuit debug capability during development.
Do not exceed 10 MHz on the PV-10AU grade - a common mistake when migrating layouts shared with the 20 MHz ATMEGA3250P-20AU. When using the integrated LCD controller, dedicate the correct port pins to segment/backplane drive and account for the LCD biasing scheme in the analog layout. Ensure the clock source selection fuses match your crystal or internal RC choice; wrong fuses can brick ISP access and require high-voltage parallel programming. Finally, EEPROM wear is finite - implement wear-leveling if calibration data is rewritten frequently.
Compliance Information
Compliance status not explicitly stated in the provided web data; the AU suffix in Atmel/Microchip convention typically denotes lead-free/RoHS packaging, but this must be confirmed on the official Microchip product page before procurement claims.
