ATSAM3U4EA-CU

SMART SAM3U ARM® Cortex-M3 微控制器基于 ARM® Cortex®-M3 的闪存微控制器，Atmel® SMART SAM3U 随附片上高速 USB 驱动器和收发器，SDIO/SDCard/MMC 及 SPI 界面。 该系列还包括 QTouch 电容性触摸支持、双库闪存和存储器保护装置。### ARM 微控制器，Atmel

The is a SMART SAM3U series 32-bit Flash Microcontroller based on the high-performance ARM Cortex-M3 RISC processor. It operates at a maximum speed of 96MHz and features two 128kB of dual-bank flash memory and 52kB of SRAM. The peripheral set includes a High Speed USB device and PHY at 480Mbps, high-speed multimedia card interface for SDIO/SD/MMC, a 16-bit external bus interface supporting NAND flash, three USARTs, two TWIs I²C, four SPIs, I²S, four PWM timers, three 16-bit timers, RTC and eight 12-bit and eight 10-bit ADCs. The architecture sustains high-speed data transfers, with multi-layer bus matrix, multiple SRAM banks, PDC and DMA support parallel tasks to maximize data throughput. The SAM3U4C operates from 1.62 to 3.6V. The real-time event management allows peripherals to receive, react to and send events in active and sleep modes without processor intervention.

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ARM Cortex-M3 revision 2.0 running at up to 96MHz

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Memory protection unit MPU

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Thumb®-2 instruction set

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Embedded voltage regulator for single supply operation

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Power-on-reset POR, brown-out detector BOD and watchdog for safe reset

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3 to 20MHz Resonator oscillators

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High precision factory trimmed internal RC oscillator with 4MHz default frequency

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Slow clock internal RC oscillator as permanent clock for device clock in low power mode

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One PLL for device clock and one dedicated PLL for USB 2.0 high speed device

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Sleep, wait and backup modes

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1 Serial peripheral interface SPI

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1 Synchronous serial controller SSC I²S

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1 High speed multimedia card interface HSMCI SDIO/SD/MMC

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3-channel 16-bit Timer/counter TC for capture, compare and PWM

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4-channel 16-bit PWM PWMC

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32-bit Real-time timer RTT and real-time clock RTC with calendar and alarm features