ATSAM4LS4CA-AU

The ATSAM4LS4CA-AU is a 32-bit ARM Cortex-M4 microcontroller from Microchip Technology, part of the SAM4L series. It features a 48MHz core, 256KB of Flash memory, and 32KB of SRAM. The device integrates picoPower technology for ultra-low power consumption, with active mode current as low as 90 µA/MHz. It supports multiple power saving modes: Wait mode (3 µA), Retention mode (1.5 µA), and Backup mode (less than 0.9 µA).

The microcontroller offers a rich set of peripherals including I²C, IrDA, LINbus, SPI, UART/USART, and USB connectivity. It also includes a 15-channel 12-bit ADC, a 1-channel 10-bit DAC, and peripherals such as brown-out detect/reset, DMA, I²S, POR, PWM, and watchdog timer. With 80 I/O pins, it provides ample interface capability.

The ATSAM4LS4CA-AU is supplied in a 100-TQFP surface mount package (14x14mm) and operates over a temperature range of -40°C to 85°C. The supply voltage range is 1.68V to 3.6V, allowing flexible system design. Its internal oscillator reduces external component count. This microcontroller is suitable for applications requiring low power and rich peripheral integration, such as industrial control, portable devices, and IoT endpoints.