Microchip Technology ATMEGA325A-AUR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.99 | $4.99 |
| 15+ | $4.83 | $72.45 |
| 25+ | $4.73 | $118.25 |
| 50+ | $4.46 | $223.00 |
| 100+ | $3.94 | $394.00 |
| N+ | $0.79 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATmega |
| Packaging | Cut Tape (CT) | NULL |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Connectivity | SPI, UART/USART, USI |
| Peripherals | Brown-out Detect/Reset, 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) | 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 | 64-TQFP (14x14) |
| Package / Case | 64-TQFP |
| ROHS |  |
The Microchip ATMEGA325A-AUR is an 8-bit AVR microcontroller delivering 20MHz performance in a 64-TQFP package. It provides 32KB of in-system programmable flash and 2KB SRAM, operating from 1.8V to 5.5V. Integrated features include a brown-out detector, power-on reset, PWM channels, and a watchdog timer. This MCU is designed for cost-sensitive embedded control applications requiring moderate memory and robust low-voltage operation.
- Wide voltage range (1.8V-5.5V) simplifies power supply design and supports battery operation.
- 20MHz AVR core delivers efficient processing for real-time control tasks.
- 32KB flash memory provides ample code space for complex firmware.
- Industrial temperature range (-40°C to 85°C) ensures reliability in harsh environments.
- 64-pin TQFP package offers good I/O count for peripheral-rich designs.
Industrial Control Panels
The 20MHz AVR core with 32KB flash handles real-time control loops for relay sequencing and motor start/stop logic in industrial environments, operating reliably from -40°C to 85°C.
Battery-Powered Sensor Nodes
With a 1.8V minimum supply voltage and multiple sleep modes, this MCU extends battery life in wireless sensor networks while the Brown-out Detector ensures safe shutdown during voltage dips.
Automotive Aftermarket Modules
The PWM channels and WDT make it suitable for LED lighting controllers or window lift modules in 12V automotive systems, where the wide voltage range tolerates load-dump transients.
Portable Medical Monitors
Low power consumption and the 64-TQFP package allow compact PCB designs for handheld glucose meters or pulse oximeters, with the POR ensuring clean startup on battery insertion.
HVAC Thermostats
Combine temperature sensing with PWM-driven fan control using the 2KB SRAM for data logging. The 5.5V maximum supply simplifies interfacing with 5V analog sensors.
Smart Metering Equipment
The 32KB flash stores calibration constants and communication protocols for utility meters, while the watchdog timer prevents firmware hangs in remote field deployments.
- Q: What is the operating voltage range of the ATMEGA325A-AUR?
- A: It operates from 1.8V to 5.5V, making it suitable for battery-powered and low-voltage applications.
- Q: What is the maximum clock speed?
- A: The device supports a maximum speed of 20MHz.
- Q: How much program memory and RAM does it have?
- A: It features 32KB of flash program memory and 2KB of SRAM.
- Q: What package is this MCU available in?
- A: It comes in a 64-pin TQFP package.
- Q: Does it include analog comparators?
- A: Yes, it includes an analog comparator in addition to other standard peripherals.
ATMEGA325A-AUR.pdf
- Q: What is the operating voltage range of the ATMEGA325A-AUR?
- A: It operates from 1.8V to 5.5V, making it suitable for battery-powered and low-voltage applications.
- Q: What is the maximum clock speed?
- A: The device supports a maximum speed of 20MHz.
- Q: How much program memory and RAM does it have?
- A: It features 32KB of flash program memory and 2KB of SRAM.
- Q: What package is this MCU available in?
- A: It comes in a 64-pin TQFP package.
- Q: Does it include analog comparators?
- A: Yes, it includes an analog comparator in addition to other standard peripherals.
