ATSAM4LS4AA-MU

SMART SAM4L ARM® Cortex-M4 微控制器Atmel® SMART SAM4L 微控制器单元 MCUs 基于 ARM® Cortex®-M4 处理器，提供 picoPower® 技术，有着活动模式最低的功耗（低至 90μA/MHz）以及有着最短唤醒时间（低至1.5μs）的睡眠模式全 RAM 保留 1.5μA。 它们还包括 QTouch 电容式触摸支持和高效的信号处理。### ARM 微控制器，Atmel

The 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, 128-bit 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.

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ARM Cortex-M4 running at up to 48MHz

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Memory protection unit MPU

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Thumb®-2 instruction set

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picoPower® technology for ultra-low power consumption

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Embedded voltage linear and switching regulator for single supply operation

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Two Power-on-reset and Two Brown-out detectors BOD

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Resonator oscillators - 0.6 to 30MHz and 32.768kHz for RTC or device clock

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Slow clock internal RC oscillator as permanent low-power mode device clock

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High speed 80MHz internal RC oscillator

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Low power 32kHz internal RC oscillator

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PLL up to 240MHz for device clock and for USB

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Digital frequency locked loop DFLL with wide input range

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12Mbps USB 2.0 device and embedded host

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Liquid crystal display LCD module with capacity up to 40 segments and up to 4 common terminals

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Windowed watchdog timer WDT

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Asynchronous timer AST with real-time clock capability, counter or calendar mode supported

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Frequency meter FREQM for accurate measuring of clock frequency

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Capacitive touch module CATB supporting up to 32 buttons

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Audio -bitstream DAC ABDACB suitable for stereo audio

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Inter-IC Sound IISC controller, compliant with inter-IC sound I²S specification