The SAM4S MCUs are ready for capacitive touch, offering native support for the Atmel QTouch® library for easy implementation of buttons, wheels, and sliders.
The SAM4S devices have feature Sleep, Wait, and Backup software-selectable low-power modes. In Sleep mode, the processor is stopped while all other functions can be kept running. In Wait mode, all clocks and functions are stopped but some peripherals can be configured to wake up the system based on predefined conditions. In Backup mode, only the low-power RTC and wakeup logic are running.
The real-time event management allows peripherals to receive, react to and send events in Active and Sleep modes without processor intervention.
The SAM4S MCUs are medium-range, general-purpose microcontrollers with an ideal ratio in terms of reduced power consumption, processing power, and peripheral set. This enables the SAM4S devices to sustain a wide range of applications that includes consumer, industrial control, and PC peripherals.
The Microchip Technology SAM4S Arm Flash Microcontrollers are offered in 100-lead LQFP, TFBGA, and VFBGA; 64-lead LQFP, QFN, and WLCP; and 48-lead LQFP and QFN packages. These devices are pin-to-pin and software compatible with the SAM3 Cortex-M3 processor-based MCUs, offering a smooth upwards migration path for performance and memory size.