Microchip Technology ATMEGA328-MU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.30 | $2.30 |
| 15+ | $2.23 | $33.45 |
| 25+ | $2.18 | $54.50 |
| 50+ | $2.06 | $103.00 |
| 100+ | $1.82 | $182.00 |
| N+ | $0.36 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATmega |
| Packaging | Tray | |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 23 |
| Program Memory Size | 32KB (16K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 1K x 8 |
| RAM Size | 2K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 5.5V |
| Data Converters | A/D 8x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 32-VQFN (5x5) |
| Package / Case | 32-VFQFN Exposed Pad |
| ROHS |  |
The Microchip ATMEGA328-MU is a high-performance 8-bit AVR microcontroller in a compact 32-VFQFN package. It delivers 20MHz processing speed with 32KB flash and 2KB SRAM, all while operating from 1.8V to 5.5V. Its integrated peripherals include PWM, watchdog timer, and brown-out detection, making it a versatile choice for industrial and consumer embedded designs.
- Ultra-low power consumption: 1.8V operation and multiple sleep modes extend battery life in portable devices.
- High code density: 32KB flash with RISC architecture allows complex algorithms in a small footprint.
- Robust reliability: Brown-out reset and watchdog timer prevent system lockups in noisy environments.
- Compact thermal package: VFQFN exposed pad improves heat dissipation for sustained 20MHz operation.
IoT Sensor Nodes
The low 1.8V operation and multiple sleep modes make it ideal for battery-powered environmental sensors that need to run for years.
Motor Control Systems
With 20MHz speed and built-in PWM channels, it can generate precise control signals for brushless DC motors in drones or robotics.
Data Logging Devices
The 2KB SRAM and 32KB flash allow storing moderate amounts of sensor data locally before transmission.
Home Automation Hubs
Its rich peripheral set (UART, SPI, I2C) enables seamless communication with Zigbee, Wi-Fi, or Z-Wave modules.
Automotive Aftermarket
The -40°C to 85°C temperature range and robust brown-out detection make it reliable for engine control units or dashboard clusters.
Educational Prototyping
Its Arduino compatibility and 5V tolerance simplify breadboard experiments for students learning embedded C.
- Q: What is the operating voltage range of the ATMEGA328-MU?
- A: The ATMEGA328-MU operates from 1.8V to 5.5V, making it suitable for battery-powered and 3.3V/5V systems.
- Q: What is the maximum clock speed?
- A: It supports up to 20MHz, enabling fast processing for real-time applications.
- Q: How much flash memory does it have?
- A: It features 32KB of in-system programmable flash, ideal for complex firmware.
- Q: What package is available?
- A: It comes in a 32-VFQFN exposed pad package, which is compact and thermally efficient.
- Q: Does it include analog comparators?
- A: Yes, it includes an analog comparator, along with PWM, WDT, and brown-out detection.
ATMEGA328-MU.pdf
- Q: What is the operating voltage range of the ATMEGA328-MU?
- A: The ATMEGA328-MU operates from 1.8V to 5.5V, making it suitable for battery-powered and 3.3V/5V systems.
- Q: What is the maximum clock speed?
- A: It supports up to 20MHz, enabling fast processing for real-time applications.
- Q: How much flash memory does it have?
- A: It features 32KB of in-system programmable flash, ideal for complex firmware.
- Q: What package is available?
- A: It comes in a 32-VFQFN exposed pad package, which is compact and thermally efficient.
- Q: Does it include analog comparators?
- A: Yes, it includes an analog comparator, along with PWM, WDT, and brown-out detection.
