Atmel ATUC128L4U-D3HR

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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 36
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 48-TLLGA (5.5x5.5)
Package / Case 48-UFLGA Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATUC128L4U-D3HR is a 32-bit AVR microcontroller from Atmel, offering 128KB flash and 32KB RAM. Operating from 1.62V to 3.6V at up to 50MHz, it integrates DMA, PWM, and watchdog functions in a compact 48-UFLGA package, ideal for performance-constrained embedded designs.

  • High-speed 50MHz AVR core – delivers real-time responsiveness for complex control loops.
  • Low-voltage operation down to 1.62V – extends battery life in portable devices.
  • Integrated DMA controller – reduces CPU load for data transfer tasks.
  • Compact 48-UFLGA package – saves board space for space-limited designs.

Industrial Control Systems

50MHz AVR core with DMA and PWM enables precise motor control and sensor interfacing in factory automation.

Portable Medical Devices

Low 1.62V operation and 128KB flash support battery-powered monitoring equipment with complex algorithms.

Smart Home Gateways

Multiple communication protocols handled efficiently with 32KB RAM and DMA for concurrent data streams.

Automotive Body Electronics

Wide temperature range and brown-out detection ensure reliable operation in vehicle environments.

IoT Edge Nodes

Low power consumption with fast wake-up via POR and WDT suits always-on sensor nodes.

Robotics Controllers

PWM channels and 50MHz speed allow high-frequency servo updates for precise motion.

Q: What is the operating voltage range?
A: 1.62V to 3.6V, suitable for low-power applications.
Q: What is the maximum clock speed?
A: 50MHz, enabling fast processing for real-time tasks.
Q: What package is available?
A: 48-UFLGA with exposed pad for improved thermal performance.
Q: Does it include a watchdog timer?
A: Yes, WDT is integrated for system reliability.
Base Product Number : ATUC128L4U
128KB Flash 32-bit MCU 32KB RAM 50MHz Automotive AVR DMA Industrial IoT PWM UFLGA
Q: What is the operating voltage range?
A: 1.62V to 3.6V, suitable for low-power applications.
Q: What is the maximum clock speed?
A: 50MHz, enabling fast processing for real-time tasks.
Q: What package is available?
A: 48-UFLGA with exposed pad for improved thermal performance.
Q: Does it include a watchdog timer?
A: Yes, WDT is integrated for system reliability.