The ATSAM3N4CA-AU is a SMART SAM3N2A series 32-bit Flash Microcontroller based on the high-performance ARM Cortex-M3 RISC processor. It operates at a maximum speed of 48MHz and features 256kB of flash memory and 24kB of SRAM. The peripheral set includes an uSART, two UARTs, two SPIs, two TWIs (I²C), PWM timer, six 16-bit timers, RTC, a 10-bit ADC and a 10-bit DAC. The SAM3N4C is ready for capacitive touch thanks to the Atmel QTouch® library, offering an easy way to implement buttons, wheels and sliders. It operates from 1.62 to 3.6V. The SAM3N4C is pin-to-pin compatible with the SAM3S4C. It is ready for capacitive touch with QTouch library, offering an easy way to implement buttons, wheels and sliders. The real-time event management allows peripherals to receive, react to and send events in active and sleep modes without processor intervention.
ARM Cortex-M3 revision 2.0 running at up to 48MHz
Thumb®-2 instruction set
24-bit SysTick counter
Nested vector interrupt controller
Embedded voltage regulator for single supply operation
Power-on-reset (POR), brown-out detector (BOD) and watchdog for safe reset
Quartz or ceramic resonator oscillators - 3 to 20MHz and optional 32.768kHz for RTC or device clock
High precision factory trimmed internal RC oscillator with 4MHz default frequency
