Atmel ATUC128L3U-Z3UR

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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-QFN (9x9)
Package / Case 64-VFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATUC128L3U-Z3UR from Atmel is a 32-bit AVR microcontroller operating at 50MHz. It features 128KB of flash memory and 32KB of RAM, with a supply voltage range of 1.62V to 3.6V. The device includes Brown-out Detect/Reset, DMA, POR, PWM, and WDT, and is housed in a 64-VFQFN Exposed Pad package. It is optimized for space-constrained, low-power applications.

  • Compact 64-VFQFN package: Ideal for space-limited PCB designs.
  • Low-power AVR core: 50MHz with efficient sleep modes for battery operation.
  • Robust reset management: Brown-out Detect and POR ensure reliable startup.
  • DMA and PWM integration: Reduces CPU load for real-time control.

Compact Wearable Devices

The 64-VFQFN package with exposed pad allows efficient heat dissipation in small form-factor fitness trackers or smartwatches.

Industrial Process Control

PWM and DMA enable precise control of valves and pumps, while WDT ensures system recovery in harsh industrial environments.

Consumer Robotics

The 50MHz AVR core with 128KB flash supports complex motion algorithms for robotic vacuum cleaners or toy robots.

Smart Agriculture Sensors

Low voltage operation and brown-out detection make it reliable for soil moisture monitors powered by solar cells in remote fields.

Automotive Lighting Control

With -40°C to 85°C range, it can manage LED matrix lighting in vehicles, using PWM for brightness and color control.

Medical Implantable Devices

The low power consumption and small package suit hearing aids or neurostimulators requiring long battery life.

Q: What is the core processor of ATUC128L3U-Z3UR?
A: It uses an AVR core running at 50MHz.
Q: What is the supply 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 this device in?
A: It comes in a 64-VFQFN Exposed Pad package.
Q: What are the key integrated features?
A: It includes Brown-out Detect/Reset, DMA, POR, PWM, and WDT.
Base Product Number : ATUC128L3U-Z3U
128KB Flash 32-bit 32KB RAM 50MHz 64-VFQFN Automotive AVR Brown-out Detect DMA Low Power MCU POR PWM Robotics WDT Wearable
Q: What is the core processor of ATUC128L3U-Z3UR?
A: It uses an AVR core running at 50MHz.
Q: What is the supply 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 this device in?
A: It comes in a 64-VFQFN Exposed Pad package.
Q: What are the key integrated features?
A: It includes Brown-out Detect/Reset, DMA, POR, PWM, and WDT.