Microchip Technology ATSAM4LS2AA-AUR

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series SAM4L
Packaging Cut Tape (CT) | NULL
Core Processor ARM® Cortex®-M4
Core Size 32-Bit Single-Core
Speed 48MHz
Connectivity I2C, IrDA, LINbus, SPI, UART/USART, USB
Peripherals Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
Number of I/O 32
Program Memory Size 128KB (128K x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 32K x 8
Voltage - Supply (Vcc/Vdd) 1.68V ~ 3.6V
Data Converters A/D 3x12b; D/A 1x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 48-TQFP (7x7)
Package / Case 48-TQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATSAM4LS2AA-AUR is a low-power 32-bit microcontroller based on the ARM Cortex-M4 core. It operates at 48 MHz and offers 128 KB of Flash and 32 KB of RAM. With a supply voltage range of 1.68V to 3.6V, it is optimized for energy-efficient designs. The 48-TQFP package provides a compact footprint. Integrated peripherals include DMA, I2S, PWM, and multiple system protection features, making it suitable for portable and industrial applications.

  • Ultra-low voltage operation (1.68V): Extends battery life in portable devices, enabling direct operation from single-cell batteries.
  • ARM Cortex-M4 core: Provides DSP instructions and efficient processing for signal conditioning and control algorithms.
  • 128 KB Flash / 32 KB RAM: Balanced memory for moderate-complexity applications without external storage.
  • Integrated DMA and I2S: Facilitates high-throughput data streaming for audio and sensor interfaces with minimal CPU intervention.
  • Compact 48-TQFP package: Saves board space while offering adequate I/O for peripheral integration.

Low-Power Wireless Sensors

The 1.68V minimum supply and 48 MHz Cortex-M4 allow battery-powered sensor nodes to run efficiently while maintaining processing power for protocol stacks.

Portable Instrumentation

With 32 KB RAM and DMA, it can handle real-time data logging from ADCs without CPU loading, ideal for handheld meters.

Smart Home Controllers

I2S support enables audio interfaces for voice-controlled devices, while PWM drives dimmable LED lighting.

Medical Wearables

The low voltage and robust reset features make it suitable for continuous health monitoring patches that require long battery life.

Industrial Process Control

Its -40°C to 85°C range and DMA capabilities support reliable data acquisition in factory automation.

Consumer Audio Accessories

The Cortex-M4 with I2S can decode and output audio for headphones or smart speakers with minimal external components.

Q: What core does the ATSAM4LS2AA-AUR use?
A: It is based on the ARM Cortex-M4 processor, running at up to 48 MHz.
Q: What is the program memory capacity?
A: It has 128 KB of Flash memory, organized as 128K x 8 bits.
Q: What is the operating voltage range?
A: The device supports a wide range from 1.68V to 3.6V, enabling low-power operation.
Q: What package is this variant?
A: It is available in a 48-TQFP package, suitable for compact PCB designs.
Q: Does it have DMA and PWM?
A: Yes, it includes DMA, PWM, I2S, and protection features like brown-out detect and WDT.
Base Product Number : ATSAM4LS2AA-AU
128KB Flash 32-bit MCU 32KB RAM 48-TQFP 48MHz ARM Cortex-M4 audio DMA I2S industrial low-power PWM wearable
Q: What core does the ATSAM4LS2AA-AUR use?
A: It is based on the ARM Cortex-M4 processor, running at up to 48 MHz.
Q: What is the program memory capacity?
A: It has 128 KB of Flash memory, organized as 128K x 8 bits.
Q: What is the operating voltage range?
A: The device supports a wide range from 1.68V to 3.6V, enabling low-power operation.
Q: What package is this variant?
A: It is available in a 48-TQFP package, suitable for compact PCB designs.
Q: Does it have DMA and PWM?
A: Yes, it includes DMA, PWM, I2S, and protection features like brown-out detect and WDT.