ATSAM4LS4AA-AU

The ATSAM4LS4AA-AU is a SAM4L series 32-bit Flash Microcontroller based on the ARM Cortex M4 processor. The ATSAM4LS4A delivers the lowest power in active mode (90µA/MHz) as well as sleep mode (1.5µA) and the shortest wake-up time (down to 1.5µs) in a Cortex-M4 device. Along with 256kB of embedded flash, the device features an USB device, peripheral event system and SleepWalking™ intelligent peripherals. Integrated Atmel QTouch® technology makes it easy to bring capacitive touch functionality to your hardware. It offers a wide range of peripherals such as segment LCD controller, embedded hardware capacitive touch (QTouch), USB device and embedded host, 128bit AES and audio interfaces in addition to high speed serial peripherals such as USART, SPI and I2C. Additionally the peripheral event system and sleepwalking allows the peripherals to communicate directly with each other and make intelligent decisions.

• ARM Cortex-M4 running at up to 48MHz
• Memory protection unit (MPU)
• Thumb®-2 instruction set
• picoPower® technology for ultra-low power consumption
• Embedded voltage linear and switching regulator for single supply operation
• Two Power-on-reset and Two Brown-out detectors (BOD)
• Resonator oscillators - 0.6 to 30MHz and 32.768kHz for RTC or device clock
• Slow clock internal RC oscillator as permanent low-power mode device clock
• High speed 80MHz internal RC oscillator
• Low power 32kHz internal RC oscillator
• PLL up to 240MHz for device clock and for USB
• Digital frequency locked loop (DFLL) with wide input range
• 12Mbps USB 2.0 device and embedded host
• Liquid crystal display (LCD) module with capacity up to 40 segments and up to 4 common terminals
• Windowed watchdog timer (WDT)
• Asynchronous timer (AST) with real-time clock capability, counter or calendar mode supported
• Frequency meter (FREQM) for accurate measuring of clock frequency
• Capacitive touch module (CATB) supporting up to 32 buttons
• Audio -bitstream DAC (ABDACB) suitable for stereo audio
• Inter-IC sound (IISC) controller, compliant with inter-IC sound (I²S) specification
• Peripheral event system for direct peripheral to peripheral communication
• 32bit cyclic redundancy check calculation unit (CRCCU)
• Random generator (TRNG)
• Parallel capture module (PARC)
• Glue logic controller (GLOC)