Microchip Technology ATMEGA324A-AU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.48 | $4.48 |
| 15+ | $4.34 | $65.10 |
| 25+ | $4.25 | $106.25 |
| 50+ | $4.01 | $200.50 |
| 100+ | $3.54 | $354.00 |
| N+ | $0.71 | 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 | 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) | 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 | 44-TQFP (10x10) |
| Package / Case | 44-TQFP |
| ROHS |  |
The Microchip ATMEGA324A-AU is a high-performance 8-bit AVR microcontroller designed for demanding embedded applications. Operating from 1.8V to 5.5V and up to 20MHz, it delivers 32KB flash memory and 2KB SRAM in a compact 44-TQFP package. Its rich peripheral set includes PWM, watchdog timer, and brown-out detection, making it a versatile choice for industrial and consumer electronics.
- Wide voltage range (1.8V-5.5V): Enables flexible power supply design, from single-cell batteries to regulated 5V rails.
- High-speed 20MHz AVR core: Executes most instructions in a single clock cycle, maximizing throughput for time-critical tasks.
- Integrated brown-out detection: Prevents data corruption during power dips, enhancing system reliability.
- Compact 44-TQFP package: Saves PCB space while providing ample I/O for peripheral interfacing.
Industrial Automation Control
With 20MHz speed and 32KB flash, the ATMEGA324A-AU handles real-time control loops for conveyor systems and robotic arms, ensuring precise timing and reliable operation in noisy environments.
Smart Sensor Nodes
Its low-voltage operation (1.8V) and multiple sleep modes make it ideal for battery-powered environmental sensors, enabling long-term field deployment without frequent battery changes.
Automotive Aftermarket Modules
The -40°C to 85°C temperature range and robust I/O structure support automotive lighting control and window lift modules, providing stable performance under extreme conditions.
Portable Medical Devices
Low power consumption combined with 2KB SRAM allows for compact glucose meters and pulse oximeters, where efficient data processing and minimal heat generation are critical.
HVAC System Controllers
Integrated PWM channels and watchdog timer enable precise motor speed control and fault detection in heating and cooling systems, improving energy efficiency and safety.
Security Keypads
The 44-TQFP package and 32KB memory support complex encryption algorithms for access control panels, ensuring secure communication with central systems.
- Q: What is the maximum operating frequency of the ATMEGA324A-AU?
- A: The ATMEGA324A-AU operates at up to 20MHz with a supply voltage range of 1.8V to 5.5V.
- Q: How much flash memory does this MCU have?
- A: It features 32KB of in-system programmable flash memory (16K x 16).
- Q: What package is the ATMEGA324A-AU available in?
- A: It comes in a 44-pin TQFP package, suitable for compact PCB designs.
- Q: Does it include analog comparators?
- A: Yes, it includes an analog comparator, along with PWM, watchdog timer, and brown-out detection.
ATMEGA324A-AU.pdf
- Q: What is the maximum operating frequency of the ATMEGA324A-AU?
- A: The ATMEGA324A-AU operates at up to 20MHz with a supply voltage range of 1.8V to 5.5V.
- Q: How much flash memory does this MCU have?
- A: It features 32KB of in-system programmable flash memory (16K x 16).
- Q: What package is the ATMEGA324A-AU available in?
- A: It comes in a 44-pin TQFP package, suitable for compact PCB designs.
- Q: Does it include analog comparators?
- A: Yes, it includes an analog comparator, along with PWM, watchdog timer, and brown-out detection.
