Microchip Technology ATSAM4LC2CA-AU

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series SAM4L
Packaging Tray |
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, LCD, POR, PWM, WDT
Number of I/O 75
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 15x12b; D/A 1x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 100-TQFP (14x14)
Package / Case 100-TQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATSAM4LC2CA-AU is a low-power ARM Cortex-M4 microcontroller with 128KB flash and 32KB RAM. Operating from 1.68V to 3.6V at 48MHz, it integrates an LCD controller, DMA, I2S, and multiple safety features. The 100-TQFP package suits compact, feature-rich designs in medical and IoT markets.

  • Ultra-low voltage operation: 1.68V minimum enables direct battery connection, eliminating boost converters.
  • Integrated LCD controller: Reduces external driver ICs, saving PCB space and cost.
  • High-speed Cortex-M4: 48MHz with DSP instructions accelerates math-heavy algorithms.
  • Rich peripheral set: DMA, I2S, and PWM provide flexibility for audio and display applications.

Battery-Powered IoT Sensors

The 1.68V minimum supply and 48MHz Cortex-M4 allow energy-efficient sensor nodes that process data locally, extending battery life in smart agriculture.

Portable Medical Monitors

With DMA and I2S, this MCU streams audio from pulse oximeters or heart monitors, while the LCD driver displays waveforms in real time.

Smart Home Displays

The integrated LCD controller and PWM enable low-power thermostats with touch interfaces, running on 3.3V coin cells.

Industrial Data Loggers

32KB RAM buffers high-speed ADC samples, while the Cortex-M4 handles floating-point math for vibration analysis in machinery.

Wearable Fitness Trackers

Low-voltage operation and WDT ensure reliable step counting and heart-rate monitoring, with I2S for audio feedback.

Audio Processing Modules

The I2S interface connects to codecs for voice recognition in smart speakers, using DMA to offload the CPU.

Q: What core does the ATSAM4LC2CA-AU use?
A: It uses an ARM Cortex-M4 processor running at up to 48MHz, offering DSP instructions for signal processing.
Q: What is the supply voltage range?
A: It operates from 1.68V to 3.6V, enabling low-power battery designs.
Q: Does it have an LCD controller?
A: Yes, it includes an integrated LCD controller, making it suitable for display applications.
Q: How much memory is available?
A: It has 128KB flash and 32KB RAM, providing ample space for complex firmware.
Base Product Number : ATSAM4LC2CA
100-TQFP 128KB flash 32-bit MCU 32KB RAM 48MHz ARM Cortex-M4 DMA I2S IoT LCD controller low power medical wearable
Q: What core does the ATSAM4LC2CA-AU use?
A: It uses an ARM Cortex-M4 processor running at up to 48MHz, offering DSP instructions for signal processing.
Q: What is the supply voltage range?
A: It operates from 1.68V to 3.6V, enabling low-power battery designs.
Q: Does it have an LCD controller?
A: Yes, it includes an integrated LCD controller, making it suitable for display applications.
Q: How much memory is available?
A: It has 128KB flash and 32KB RAM, providing ample space for complex firmware.