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
- Slow clock internal RC oscillator as permanent low-power mode device clock
- One PLL up to 130MHz for device clock
- Sleep, wait and backup modes
- Two 2-wire UARTs
- Two 2-wire Interfaces (I2C compatible)
- One SPI
- 32-bit low-power Real-time Timer (RTT)
- Low-power real-time clock (RTC) with calendar and alarm
- Register write protection
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