Atmel ATUC128L3U-AUR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $38.00 | $38.00 |
| 15+ | $8.64 | $129.60 |
| 25+ | $8.45 | $211.25 |
| 50+ | $7.98 | $399.00 |
| 100+ | $7.04 | $704.00 |
| N+ | $1.41 | Price Inquiry |
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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 |
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.
- 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.

ATUC128L3U-AUR.pdf