Microchip Technology ATMEGA645A-MU
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $21.20 | $21.20 |
| 15+ | $4.88 | $73.20 |
| 25+ | $4.77 | $119.25 |
| 50+ | $4.51 | $225.50 |
| 100+ | $3.98 | $398.00 |
| N+ | $0.80 | Price Inquiry |
Request Quote / Inquiry
| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATmega |
| Packaging | Tray | NULL |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 16MHz |
| Connectivity | SPI, UART/USART, USI |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 54 |
| Program Memory Size | 64KB (32K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 2K x 8 |
| RAM Size | 4K 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-QFN (9x9) |
| Package / Case | 64-VFQFN Exposed Pad |
| ROHS |  |
The Microchip ATMEGA645A-MU is a low-power, high-performance 8-bit AVR microcontroller. It offers 64KB of flash memory and 4KB of SRAM in a compact 64-VFQFN package. Operating from 1.8V to 5.5V and up to 16MHz, it provides a balanced solution for general-purpose embedded control. The device includes standard peripherals such as PWM, brown-out detection, and a watchdog timer, ensuring reliable operation across diverse applications.
- Wide Voltage Range: Operates from 1.8V to 5.5V, simplifying design for both 3.3V and 5V systems.
- Low Power Consumption: Multiple sleep modes and a low-power oscillator extend battery life in portable devices.
- Large Flash Memory: 64KB of flash provides ample space for complex firmware and bootloaders.
- High I/O Count: The 64-pin package offers up to 54 I/O lines for rich peripheral connectivity.
Battery-Powered Devices
With a 1.8V minimum supply and multiple sleep modes, this MCU is ideal for portable instruments and remote sensors requiring long battery life.
Industrial Control Panels
The 64-pin package provides ample I/O for interfacing with relays, switches, and indicators in PLCs and HMI units.
Home Automation Hubs
Its 5V compatibility simplifies interfacing with legacy sensors and actuators, while PWM outputs can drive dimmers and motor controllers.
Data Logging Systems
The 4KB SRAM and 64KB flash allow for moderate data buffering and logging in environmental monitoring equipment.
Automotive Aftermarket
Operating at -40°C to 85°C, it can be used in car alarm systems, window controls, and dashboard instrumentation.
Smart Metering
Low power consumption and robust I/O make it suitable for utility metering applications like water or gas flow measurement.
- Q: What is the core architecture of the ATMEGA645A-MU?
- A: It is based on the 8-bit AVR core, operating at speeds up to 16MHz.
- Q: What is the operating voltage range?
- A: The device supports a wide voltage range from 1.8V to 5.5V, making it flexible for battery or 5V logic systems.
- Q: How much program memory does it have?
- A: It features 64KB of in-system programmable flash memory (32K x 16 bits).
- Q: What package is this variant?
- A: It comes in a 64-VFQFN exposed pad package, suitable for space-constrained designs.
ATMEGA645A-MU.pdf
- Q: What is the core architecture of the ATMEGA645A-MU?
- A: It is based on the 8-bit AVR core, operating at speeds up to 16MHz.
- Q: What is the operating voltage range?
- A: The device supports a wide voltage range from 1.8V to 5.5V, making it flexible for battery or 5V logic systems.
- Q: How much program memory does it have?
- A: It features 64KB of in-system programmable flash memory (32K x 16 bits).
- Q: What package is this variant?
- A: It comes in a 64-VFQFN exposed pad package, suitable for space-constrained designs.
