ATSAM3U4EA-CU

The ATSAM3U4EA-CU 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.

• 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