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ARM MCU, SAM3U Series, SAM32 Family SAM 3U Series Microcontrollers, ARM Cortex-M3, 32bit, 96 MHz

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SAM32 Family SAM 3U Series Microcontrollers
Technical Datasheet:
ATSAM3U4CA-AU   Datasheet
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Product Range Selector (SAM32 Family SAM 3U Series Microcontrollers)

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Product Overview

The ATSAM3U4CA-AU 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 2 x 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, TWI (I²C), four SPIs, I²S, four PWM timers, three 16-bit timers, RTC, 4x12-bit and four 10-bit ADC. The architecture is designed to sustain high-speed data transfers. The multi-layer bus matrix, multiple SRAM banks, PDC and DMA support parallel tasks and 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.
  • ARM Cortex-M3 revision 2.0 running at up to 96MHz
  • Memory protection unit (MPU)
  • Thumb®-2 instruction set
  • Embedded voltage regulator for single supply operation
  • Power-on-reset (POR), brown-out detector (BOD) and watchdog for safe reset
  • 3 to 20MHz Resonator oscillators
  • High precision factory trimmed internal RC oscillator with 4MHz default frequency
  • Slow clock internal RC oscillator as permanent clock for device clock in low power mode
  • One PLL for device clock and one dedicated PLL for USB 2.0 high speed device
  • Sleep, wait and backup modes
  • 1 Serial peripheral interface (SPI)
  • 1 Synchronous serial controller (SSC) (I²S)
  • 1 High speed multimedia card interface (HSMCI) (SDIO/SD/MMC)
  • 3-channel 16-bit Timer/counter (TC) for capture, compare and PWM
  • 4-channel 16-bit PWM (PWMC)
  • 32-bit Real-time timer (RTT) and real-time clock (RTC) with calendar and alarm features


Computers & Computer Peripherals, Industrial


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Product Information

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SAM32 Family SAM 3U Series Microcontrollers

ARM Cortex-M3













MSL 3 - 168 hours

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Technical Documents (3)

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CAD Models - Notice
CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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Available to manufacturer lead time of 358 days

Due to market conditions delivery times are for general guidance only and may be subject to change at short notice

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