ATSAM4S4CA-AU

The ATSAM4S4CA-AU is a SMART SAM4S series 32-bit Flash Microcontroller based on the high-performance ARM Cortex-M4 RISC processor. It operates at a maximum speed of 120MHz and features 256kB of flash memory and 64kB of SRAM. Peripheral set includes a full-speed USB device port with embedded transceiver, a high-speed MCI for SDIO/SD/MMC, an External Bus Interface featuring a Static Memory Controller to connect to SRAM, PSRAM, NOR flash, LCD Module and NAND flash, 2 USARTs, 2 UARTs, 2 TWIs, 3 SPIs, an I²S, as well as a PWM timer, two 3- channel general-purpose 16bit timers (with stepper motor and quadrature decoder logic support), an RTC, a 12-bit ADC, a 12-bit DAC and an analogue comparator. The device operate from 1.62V to 3.6V. It is ready for capacitive touch, offering native support for the Atmel QTouch® library for easy implementation of buttons, wheels and sliders. The real-time event management allows peripherals to receive, react to and send events in active and sleep modes.

• ARM Cortex-M4 with 2kB of cache running at up to 120MHz
• Memory protection unit (MPU)
• DSP instruction set
• Thumb®-2 instruction set
• Pin-to-pin compatible with SAM7S, SAM3N and SAM3S MCUs
• Embedded voltage regulator for single supply operation
• Power-on-reset (POR), brown-out detector (BOD) and watchdog for safe operation
• 3 to 20MHz resonator oscillators
• RTC with Gregorian and Persian Calendar mode, waveform generation in low-power modes
• RTC counter calibration circuitry compensates for 32.768kHz crystal frequency inaccuracy
• High-precision factory-trimmed internal RC oscillator with 4MHz default frequency
• Slow clock internal RC oscillator as permanent low-power mode device clock
• Two PLLs up to 240MHz for device clock and for USB
• Temperature sensor
• Low-power tamper detection on two inputs
• Sleep, wait and backup modes
• 32bit real-time timer and RTC with calendar, alarm and 32KHz trimming features
• 256bit general purpose backup registers (GPBR)
• One 2-channel 12-bit 1MSPS DAC
• One analogue comparator with flexible input selection, selectable input hysteresis
• 32bit cyclic redundancy check calculation unit (CRCCU)
• Register write protection
• Native support for Atmel QTouch® capacitive touch technology
• Parallel input/output (IO) data capture mode