Microchip Technology ATMEGA329P-20AU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $6.30 | $6.30 |
| 15+ | $6.10 | $91.50 |
| 25+ | $5.97 | $149.25 |
| 50+ | $5.64 | $282.00 |
| 100+ | $4.97 | $497.00 |
| N+ | $0.99 | 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 | SPI, UART/USART, USI |
| Peripherals | Brown-out Detect/Reset, LCD, POR, PWM, WDT |
| Number of I/O | 54 |
| 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 | 64-TQFP (14x14) |
| Package / Case | 64-TQFP |
| ROHS |  |
The ATMEGA329P-20AU from Microchip Technology is a high-performance 8-bit AVR microcontroller featuring an integrated LCD controller, ideal for applications requiring a direct display interface. Operating at up to 20 MHz with a supply voltage range of 2.7V to 5.5V, it delivers efficient processing for a wide range of embedded systems. The device includes 32KB of flash memory, 2KB of SRAM, and a rich set of peripherals such as PWM, brown-out detection, and watchdog timer. Housed in a compact 64-TQFP package, it is designed for industrial and consumer applications where reliability and low power consumption are critical.
- Integrated LCD Controller: Directly drives segmented LCDs without external drivers, saving board space and BOM cost.
- Wide Voltage Range (2.7V-5.5V): Flexible power supply options, supporting both 3.3V and 5V systems, simplifying design.
- High Speed (20MHz): Fast AVR core enables real-time processing for control loops and user interfaces.
- Robust Protection: Brown-out detection and watchdog timer enhance system reliability in harsh environments.
- Low Power Modes: Multiple sleep modes extend battery life in portable applications.
Industrial Control Panels
With its integrated LCD driver and 20 MHz AVR core, the ATMEGA329P-20AU can directly drive alphanumeric displays in industrial HMI panels, reducing external component count and simplifying PCB layout.
Portable Medical Devices
The low-voltage operation (2.7V-5.5V) and low-power sleep modes make it suitable for battery-powered glucose meters or pulse oximeters, where the LCD interface provides clear readouts.
Smart Energy Meters
Its robust brown-out detection and watchdog timer ensure reliable operation in utility meters, while the 32KB flash can store calibration data and communication protocols.
Automotive Aftermarket Displays
The wide temperature range (-40°C to 85°C) and PWM outputs allow for driving backlight LEDs and displaying vehicle diagnostics on a custom LCD cluster.
Home Automation Thermostats
Combine the LCD controller with the AVR's analog comparators to create a user-friendly thermostat with touch or button input, displaying temperature and schedule information.
Embedded Data Loggers
The 2KB SRAM and 32KB flash are sufficient for logging sensor data, while the SPI/I2C interfaces enable easy connection to external memory or sensors.
- Q: What is the maximum operating frequency of the ATMEGA329P-20AU?
- A: The ATMEGA329P-20AU operates at up to 20 MHz with a supply voltage range of 2.7V to 5.5V.
- Q: Does this MCU include an LCD controller?
- A: Yes, it features an integrated LCD controller, making it ideal for display-based applications.
- Q: What is the program memory size?
- A: It has 32KB of in-system programmable flash memory (16K x 16 bits) and 2KB of SRAM.
- Q: What package is available?
- A: The ATMEGA329P-20AU comes in a 64-pin TQFP package, suitable for compact PCB designs.
- Q: What are the key protection features?
- A: It includes brown-out detection, power-on reset, and a watchdog timer for reliable operation.
ATMEGA329P-20AU.pdf
- Q: What is the maximum operating frequency of the ATMEGA329P-20AU?
- A: The ATMEGA329P-20AU operates at up to 20 MHz with a supply voltage range of 2.7V to 5.5V.
- Q: Does this MCU include an LCD controller?
- A: Yes, it features an integrated LCD controller, making it ideal for display-based applications.
- Q: What is the program memory size?
- A: It has 32KB of in-system programmable flash memory (16K x 16 bits) and 2KB of SRAM.
- Q: What package is available?
- A: The ATMEGA329P-20AU comes in a 64-pin TQFP package, suitable for compact PCB designs.
- Q: What are the key protection features?
- A: It includes brown-out detection, power-on reset, and a watchdog timer for reliable operation.
