Microchip Technology ATMEGA324P-20MU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $20.36 | $20.36 |
| 15+ | $4.68 | $70.20 |
| 25+ | $4.58 | $114.50 |
| 50+ | $4.33 | $216.50 |
| 100+ | $3.82 | $382.00 |
| N+ | $0.76 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATmega |
| Packaging | Tray | NULL |
| 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 | 32 |
| 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) | 2.7V ~ 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 | 44-VQFN (7x7) |
| Package / Case | 44-VFQFN Exposed Pad |
| ROHS |
The Microchip ATMEGA324P-20MU is a high-performance 8-bit AVR microcontroller with 32KB flash memory and 2KB SRAM. Operating at up to 20MHz with a 2.7V-5.5V supply, it integrates PWM, WDT, and brown-out detection for robust embedded control in industrial and consumer applications.
- High Integration: Includes PWM, WDT, and brown-out detection, reducing external component count and BOM cost.
- Wide Voltage Range: 2.7V-5.5V operation allows flexible power supply design, from 3.3V to 5V systems.
- Proven AVR Core: 20MHz throughput with single-cycle instructions ensures efficient code execution for time-critical tasks.
- Extended Temperature: -40°C to 85°C rating supports harsh industrial environments.
Industrial Control Systems
The 20MHz AVR core with 32KB flash and 2KB SRAM is ideal for real-time control loops in PLCs and motor controllers, leveraging PWM and WDT for reliable operation.
Sensor Fusion Nodes
With multiple I/O pins and analog comparators, this MCU can aggregate data from temperature, pressure, and humidity sensors, processing signals locally before transmission.
Battery-Powered Devices
Operating from 2.7V to 5.5V, it supports direct battery connection and features power-saving sleep modes, extending battery life in portable instruments.
Automotive Aftermarket
The -40°C to 85°C temperature range and robust brown-out detection make it suitable for non-critical automotive modules like window lift controllers or mirror adjusters.
Smart Home Gateways
Its 32KB program memory can handle protocol stacks for Zigbee or Z-Wave bridging, while the WDT ensures system recovery in unattended environments.
Medical Monitoring Devices
The low-power AVR core and POR (Power-on Reset) ensure safe startup and stable operation for portable patient monitors, meeting basic medical device reliability expectations.
- Q: What is the maximum operating frequency of the ATMEGA324P-20MU?
- A: The ATMEGA324P-20MU operates at a maximum speed of 20MHz.
- Q: What is the program memory size?
- A: It features 32KB of in-system programmable flash memory.
- Q: What is the supply voltage range?
- A: The supply voltage range is 2.7V to 5.5V.
- Q: What package is this MCU available in?
- A: It comes in a 44-VFQFN exposed pad package.
- Q: What is the maximum operating frequency of the ATMEGA324P-20MU?
- A: The ATMEGA324P-20MU operates at a maximum speed of 20MHz.
- Q: What is the program memory size?
- A: It features 32KB of in-system programmable flash memory.
- Q: What is the supply voltage range?
- A: The supply voltage range is 2.7V to 5.5V.
- Q: What package is this MCU available in?
- A: It comes in a 44-VFQFN exposed pad package.

ATMEGA324P-20MU.pdf