Atmel ATUC128L3U-AUR

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Product attributes Property Value
Manufacturer Atmel
Product Series AVR®32 UC3 L
Packaging Bulk |
Core Processor AVR
Core Size 32-Bit Single-Core
Speed 50MHz
Connectivity I2C, SPI, UART/USART, USB
Peripherals Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number of I/O 51
Program Memory Size 128KB (128K x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 32K x 8
Voltage - Supply (Vcc/Vdd) 1.62V ~ 3.6V
Data Converters A/D 8x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 64-TQFP (10x10)
Package / Case 64-TQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATUC128L3U-AUR from Atmel is a 32-bit AVR microcontroller operating at 50MHz. It provides 128KB of flash memory and 32KB of RAM, with a supply voltage range of 1.62V to 3.6V. The device integrates Brown-out Detect/Reset, DMA, POR, PWM, and WDT, and is available in a 64-TQFP package. It is designed for low-power, real-time control applications.

  • Efficient AVR core: 50MHz with single-cycle I/O access for fast response.
  • Low-voltage operation (1.62V): Extends battery life in portable devices.
  • Integrated Brown-out Detect/Reset: Prevents data corruption during power dips.
  • DMA controller: Offloads CPU for data transfer, improving throughput.

Battery-Powered IoT Sensors

The low voltage (1.62V) and brown-out detection ensure stable operation in energy-harvesting or coin-cell powered wireless sensor nodes.

Motor Control for Drones

The 50MHz AVR core with PWM and DMA enables precise ESC (Electronic Speed Controller) algorithms for multirotor applications.

Portable Medical Monitors

With 128KB flash for firmware and 32KB RAM for data buffering, it suits glucose meters or pulse oximeters requiring reliable reset management.

Smart Home Controllers

DMA and PWM support dimming and motorized blinds, while WDT ensures fail-safe operation in always-on home automation hubs.

Automotive Aftermarket Accessories

The -40°C to 85°C range and robust POR make it suitable for car alarm systems or tire pressure monitoring modules.

Industrial Sensor Interfaces

Multiple PWM channels and DMA allow simultaneous reading of multiple analog sensors and actuator control in factory automation.

Q: What core does ATUC128L3U-AUR use?
A: It uses an AVR core running at 50MHz.
Q: What is the operating voltage range?
A: It operates from 1.62V to 3.6V.
Q: How much flash and RAM does it have?
A: It has 128KB flash and 32KB RAM.
Q: What package is available?
A: It comes in a 64-TQFP package.
Q: What are the key features?
A: It includes Brown-out Detect/Reset, DMA, POR, PWM, and WDT.
Base Product Number : ATUC128L3U-AU
128KB Flash 32-bit 32KB RAM 50MHz 64-TQFP AVR Brown-out Detect DMA IoT Low Power MCU Medical Motor Control POR PWM WDT
Q: What core does ATUC128L3U-AUR use?
A: It uses an AVR core running at 50MHz.
Q: What is the operating voltage range?
A: It operates from 1.62V to 3.6V.
Q: How much flash and RAM does it have?
A: It has 128KB flash and 32KB RAM.
Q: What package is available?
A: It comes in a 64-TQFP package.
Q: What are the key features?
A: It includes Brown-out Detect/Reset, DMA, POR, PWM, and WDT.