Microchip Technology ATMEGA645P-MUR

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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 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 RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATMEGA645P-MUR is an 8-bit AVR microcontroller in a 64-VFQFN package. It operates from 1.8V to 5.5V at up to 16MHz. Featuring 64KB flash and 4KB RAM, it includes brown-out detection, POR, PWM, and WDT. Its wide voltage range and large memory make it versatile for industrial and consumer applications.

  • Large 64KB flash – supports complex firmware and data logging.
  • Wide voltage range (1.8V-5.5V) – simplifies power supply design.
  • 64-pin VFQFN with exposed pad – improves thermal performance in high-current designs.
  • Integrated PWM and WDT – reduces external components and enhances reliability.

Industrial Automation HMI Panels

The 64KB flash and 4KB RAM allow storing complex user interface graphics and communication protocols for operator terminals.

Smart Metering Systems

With 1.8V operation and 16MHz speed, it can process energy measurement algorithms while maintaining low power in utility meters.

Medical Monitoring Equipment

The 5.5V tolerance and PWM outputs enable driving pumps or alarms in patient vital-sign monitors.

Robotics Controllers

Its 64-pin package provides ample I/O for motor encoders and PWM for servo control in educational robots.

Automotive Body Electronics

Operating from -40°C to 85°C, it handles window lift or mirror control with integrated WDT for safety.

Consumer Appliances

The large flash memory supports multi-mode washing machine or dishwasher cycles with EEPROM emulation.

Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V, compatible with both 3.3V and 5V systems.
Q: What is the maximum clock speed?
A: The AVR core runs at up to 16MHz.
Q: How much flash memory is available?
A: It has 64KB of flash (32K x 16-bit words) for program storage.
Q: What package is this?
A: It comes in a 64-pin VFQFN with exposed pad for thermal dissipation.
Q: Does it support PWM?
A: Yes, it includes PWM channels along with brown-out detection and WDT.
Base Product Number : ATMEGA645P
4KB RAM 64-VFQFN 64KB flash 8-bit AVR ATMEGA645P AVR core industrial medical PWM robotics WDT
Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V, compatible with both 3.3V and 5V systems.
Q: What is the maximum clock speed?
A: The AVR core runs at up to 16MHz.
Q: How much flash memory is available?
A: It has 64KB of flash (32K x 16-bit words) for program storage.
Q: What package is this?
A: It comes in a 64-pin VFQFN with exposed pad for thermal dissipation.
Q: Does it support PWM?
A: Yes, it includes PWM channels along with brown-out detection and WDT.