Atmel SAM3S4A

The Atmel SAM3S4A is a Core - ARM Cortex-M3 revision 2.0 running at up to 64 MHz - Memory Protection Unit (MPU) - Thumb-2 instruction set Pin-to-pin compatible with AT91SAM7S series (48- and 64-pin versions) Memories - 64 to 256 Kbytes Flash, 128-bit wide access, memory accelerator, single plane - 16 to 48 Kbytes SRAM - 16 Kbytes ROM with embedded bootloader routines (UART, USB) and IAP routines - 8-bit Static Memory Controller (SMC): SRAM, PSRAM, NOR and NAND Flash support System - Embedded voltage regulator for single supply operation - Power-on-Reset (POR), Brown-out Detector (BOD) and Watchdog - Quartz or ceramic resonator oscillators: 3 to 20 MHz main power with Failure Detection - High precision 8/12 MHz factory trimmed internal RC oscillator with 4 MHz default frequency - Slow Clock Internal RC oscillator as permanent low-power mode device clock - Two PLLs up to 130 MHz for device clock and for USB - Temperature Sensor - Up to 22 peripheral DMA (PDC) chns Low Power Modes - Sleep and Backup modes - Ultra low power RTC Peripherals - USB 2.0 Device: 12 Mbps, 2668 byte FIFO, up to 8 bidirectional Endpoints - Up to 2 USARTs with ISO7816, IrDA, RS-485, SPI, Manchester and Modem Mode - Two 2-wire UARTs - Up to 2 Two Wire Interface (I2C compatible), 1 SPI, 1 Serial Synchronous Controller (I2S), 1 High Speed Multimedia Card Interface (SDIO/SD Card/MMC) - Up to 6 Three-chn 16-bit Timer/Counter - 4-chn 16-bit PWM with Complementary Output, Fault Input, 12-bit Dead Time Generator Counter for Motor Control - 32-bit Real-time Timer and RTC with calendar and alarm features - Up to 15-chn, 1Msps ADC - One 2-chn 12-bit 1Msps DAC - One Analog Comparator - 32-bit Cyclic Redundancy Check Calculation Unit (CRCCU) - Write Protected Registers I/O - Up to 79 I/O lines with external interrupt capability - Three 32-bit Parallel Input/Output Controllers.