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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega
Packaging Cut Tape (CT) | Tape & Reel (TR)
Core Processor AVR
Core Size 8-Bit
Speed 16MHz
Connectivity I2C, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 53
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) 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 RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATMEGA64A-AUR is an 8-bit AVR microcontroller from Microchip, operating at up to 16MHz. It features 64KB flash and 4KB RAM, with a supply voltage range of 2.7V to 5.5V. The 64-TQFP package provides a compact, high-pin-count solution for space-constrained designs. Integrated brown-out detection, POR, PWM, and WDT ensure dependable operation in industrial and commercial applications from -40°C to 85°C.

  • Compact 64-TQFP: Saves PCB space while offering up to 53 I/O pins for peripheral-rich designs.
  • Wide voltage tolerance: 2.7V to 5.5V supports both 3.3V and 5V systems without extra regulators.
  • Proven AVR architecture: Single-cycle instructions maximize throughput at 16MHz.
  • Integrated safety features: Brown-out reset and watchdog timer enhance field reliability.

Motor Control Drives

The 16MHz AVR core and multiple PWM channels generate precise 3-phase waveforms. The 64-TQFP package provides enough pins for current sensing and encoder feedback.

Building Automation Gateways

With 64KB flash, it can store protocol stacks for BACnet or Modbus. The 2.7V minimum supply allows operation from 3V coin cells during power outages.

Medical Monitoring Devices

The -40°C to 85°C range and WDT ensure reliable patient monitoring. 4KB RAM buffers vital sign data before transmission.

Point-of-Sale Terminals

Multiple UARTs and SPI interfaces connect to card readers and displays. The 5.5V tolerance simplifies interfacing with peripheral power rails.

Smart Grid Meters

Brown-out detection protects meter calibration data during grid fluctuations. The 64-TQFP allows compact PCB design for DIN-rail mounting.

Avionics Test Equipment

The wide temperature range and robust reset circuitry meet stringent reliability requirements. 16MHz speed handles real-time data acquisition.

Q: What is the operating voltage?
A: The supply voltage range is 2.7V to 5.5V, suitable for battery and 5V systems.
Q: What is the maximum speed?
A: The AVR core runs at up to 16MHz, balancing power consumption and processing capability.
Q: How much flash memory does it have?
A: It provides 64KB of flash (32K x 16 bits) for program storage.
Q: What package is available?
A: It comes in a 64-TQFP package, offering a compact footprint with many I/O pins.
Q: Does it support PWM?
A: Yes, it includes multiple PWM channels, along with brown-out detection, POR, and WDT.
Base Product Number : ATMEGA64A
16MHz 64-TQFP 64KB flash 8-bit MCU ATMEGA64A-AUR AVR brown-out detection building automation industrial motor control PWM
Q: What is the operating voltage?
A: The supply voltage range is 2.7V to 5.5V, suitable for battery and 5V systems.
Q: What is the maximum speed?
A: The AVR core runs at up to 16MHz, balancing power consumption and processing capability.
Q: How much flash memory does it have?
A: It provides 64KB of flash (32K x 16 bits) for program storage.
Q: What package is available?
A: It comes in a 64-TQFP package, offering a compact footprint with many I/O pins.
Q: Does it support PWM?
A: Yes, it includes multiple PWM channels, along with brown-out detection, POR, and WDT.