Microchip Technology ATMEGA325A-MNR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $5.24 | $5.24 |
| 15+ | $5.08 | $76.20 |
| 25+ | $4.97 | $124.25 |
| 50+ | $4.69 | $234.50 |
| 100+ | $4.14 | $414.00 |
| N+ | $0.83 | 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 ~ 105°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 64-QFN (9x9) |
| Package / Case | 64-VFQFN Exposed Pad |
The Microchip ATMEGA325A-MNR is an 8-bit AVR microcontroller in a compact 64-VFQFN package. It features 32KB of flash memory and operates at up to 20MHz. With a supply voltage range of 1.8V to 5.5V and an operating temperature range of -40°C to 105°C, it is designed for demanding applications. The exposed pad enhances thermal performance, making it suitable for power-sensitive designs.
- Space-Saving Package: 64-VFQFN reduces PCB area compared to TQFP.
- Enhanced Thermal Management: Exposed pad improves heat transfer to the PCB.
- Flexible Power Supply: 1.8V-5.5V range simplifies power design.
- High Reliability: Includes Brown-out Reset, POR, and WDT.
- Mature Ecosystem: Supported by Microchip's extensive development tools.
Compact Wearable Devices
The VFQFN package is smaller than TQFP, making it ideal for fitness trackers and smartwatches where space is critical.
Automotive Sensor Nodes
Its wide temperature range and small footprint suit engine bay sensors for temperature, pressure, and position monitoring.
Industrial Process Controllers
With 32KB flash, it can run PID loops and log data in chemical or food processing plants, withstanding vibration.
Smart Lighting Systems
PWM outputs and low voltage operation enable efficient LED dimming and color control in architectural lighting.
Security Systems
The exposed pad improves heat dissipation, allowing continuous operation in alarm panels and access control units.
Remote Telemetry Units
Low power consumption and robust I/O make it suitable for remote monitoring of pipelines or weather stations.
- Q: What is the difference between this and the TQFP version?
- A: This version uses a 64-VFQFN package with exposed pad, offering better thermal performance.
- Q: What is the maximum speed?
- A: It runs at up to 20MHz.
- Q: What is the operating voltage?
- A: It operates from 1.8V to 5.5V.
- Q: How much flash memory is included?
- A: It has 32KB of flash memory.
- Q: Is it suitable for high-temperature environments?
- A: Yes, it operates from -40°C to 105°C.
- Q: What is the difference between this and the TQFP version?
- A: This version uses a 64-VFQFN package with exposed pad, offering better thermal performance.
- Q: What is the maximum speed?
- A: It runs at up to 20MHz.
- Q: What is the operating voltage?
- A: It operates from 1.8V to 5.5V.
- Q: How much flash memory is included?
- A: It has 32KB of flash memory.
- Q: Is it suitable for high-temperature environments?
- A: Yes, it operates from -40°C to 105°C.

ATMEGA325A-MNR.pdf