Atmel SAM3U4C

The Atmel SAM3U4C is a Core - ARM Cortex-M3 revision 2.0 running at up to 96 MHz - Memory Protection Unit (MPU) - Thumb-2 instruction set Memories - From 64 to 256 Kbytes embedded Flash, 128-bit wide access, memory accelerator, dual bank - From 16 to 48 Kbytes embedded SRAM with dual banks - 16 Kbytes ROM with embedded bootloader routines (UART, USB) and IAP routines - Static Memory Controller (SMC): SRAM, NOR, NAND support. NAND Flash controller with 4 Kbytes RAM buffer and ECC System - Embedded voltage regulator for single supply operation - POR, BOD and Watchdog for safe reset - Quartz or resonator oscillators: 3 to 20 MHz main and optional low power 32.768 kHz for RTC or device clock. - High precision 8/12 MHz factory trimmed internal RC oscillator with 4 MHz Default - 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 - Up to 17 peripheral DMA (PDC) channels and 4-channel central DMA Low Power Modes - Sleep and Backup modes, down to 2.5 µA in Backup mode - Backup domain: VDDBU pin, RTC, 32 backup registers Peripherals - USB 2.0 Device: 480 Mbps, 4-kbyte FIFO, up to 7 bidirectional Endpoints - Up to 4 USARTs (ISO7816, IrDA, Flow Control, SPI, Manchester support) and one UART - Up to 2 TWI (I2C compatible), 1 SPI, 1 SSC (I2S), 1 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 RTC with calendar and alarm features - 8-channel 12-bit 1MSPS ADC with differential input mode and programmable gain stage 8-channel 10-bit ADC I/O - Up to 96 I/O lines with external interrupt capability - Three 32-bit Parallel Input/Outputs (PIO).