Microchip Technology ATMEGA328-MMH
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.41 | $2.41 |
| 15+ | $2.34 | $35.10 |
| 25+ | $2.29 | $57.25 |
| 50+ | $2.16 | $108.00 |
| 100+ | $1.91 | $191.00 |
| N+ | $0.38 | 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 | 28-VQFN (4x4) |
| Package / Case | 28-VFQFN Exposed Pad |
| ROHS |  |
The Microchip ATMEGA328-MMH is a high-performance 8-bit AVR microcontroller in a space-saving 28-VFQFN package. It delivers 32KB of flash memory and 2KB of SRAM, operating from 1.8V to 5.5V at speeds up to 20MHz. Its integrated features, including brown-out detection and PWM, make it a versatile choice for embedded control.
- Ultra-low power consumption: The 1.8V operation and multiple sleep modes extend battery life in portable designs.
- High code efficiency: The AVR architecture executes most instructions in a single clock cycle, maximizing throughput at 20MHz.
- Compact footprint: The 28-VFQFN package reduces PCB area by over 60% compared to DIP alternatives.
- Robust protection: Built-in brown-out reset and watchdog timer ensure reliable operation in noisy environments.
IoT Sensor Nodes
The low 1.8V minimum supply voltage and multiple sleep modes enable long battery life for wireless environmental sensors.
Motor Control
With 20MHz speed and built-in PWM channels, it can generate precise control signals for small DC and stepper motors.
Portable Medical Devices
The 2KB SRAM and 32KB flash are sufficient for logging vital signs, while the wide voltage range supports direct coin-cell operation.
Home Automation
Its rich peripheral set, including timers and interrupts, simplifies interfacing with relays, dimmers, and user input buttons.
Educational Prototyping
The AVR core's extensive documentation and the 28-pin package make it an excellent choice for teaching embedded systems fundamentals.
Automotive Aftermarket
The -40°C to 85°C temperature range and robust I/O structure allow for reliable operation in under-hood or cabin-adjacent modules.
- Q: What is the operating voltage range of the ATMEGA328-MMH?
- A: The ATMEGA328-MMH 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 a maximum speed of 20MHz, providing a balance between performance and power consumption.
- Q: How much flash memory does it have?
- A: It features 32KB of in-system programmable flash memory, ideal for complex applications.
- Q: What package is this device available in?
- A: It comes in a compact 28-VFQFN exposed pad package, suitable for space-constrained designs.
ATMEGA328-MMH.pdf
- Q: What is the operating voltage range of the ATMEGA328-MMH?
- A: The ATMEGA328-MMH 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 a maximum speed of 20MHz, providing a balance between performance and power consumption.
- Q: How much flash memory does it have?
- A: It features 32KB of in-system programmable flash memory, ideal for complex applications.
- Q: What package is this device available in?
- A: It comes in a compact 28-VFQFN exposed pad package, suitable for space-constrained designs.
