Atmel SAM4LS4A

The Atmel SAM4LS4A is a Core - ARM CortexTM-M4 running at up to 48 MHz - Memory Protection Unit (MPU) picoPower Technology for Ultra-low Power Consumption Memories - Up to to 256Kbytes embedded Flash - 32 Kbytes embedded SRAM System Functions - Embedded voltage linear and switching regulator - 2 Power-on-Reset and 2 Brown-out Detectors (BOD) - Quartz or ceramic resonator oscillators: 3 to 20 MHz main power with Failure Detection low power 32.768 kHz for RTC or device clock - High precision 4/8/12 MHz factory trimmed internal RC oscillator - Slow Clock Internal RC oscillator as permanent low-power mode device clock - High speed 80MHz internal RC oscillator - Low power 32kHz internal RC oscillator - PLL up to 240 MHz for device clock and for USB - Digital Frequency Locked Loop (DFLL) - Temperature Sensor - Up to 16 peripheral DMA (PDCA) channels Peripherals - USB 2.0 Device / Host: 12 Mbps, up to 8 bidirectional Endpoints - Liquid Crystal Display (LCD) Module - 1 USART with ISO7816, IrDA, RS-485, SPI, Manchester and LIN Mode - 3 USART with SPI Mode - Windowed Watchdog Timer (WDT) - Asynchronous Timer (AST) with Real-time Clock Capability, Counter or Calendar Mode - Frequency Meter (FREQM) - 6 16-bit Timer/Counter (TC) - 1 Master/Slave Serial Peripheral Interface (SPI) - 4 Master and 2 Slave 2-wire Interfaces (TWI) - 1 Advanced Encryption System (AES) - 1 16-channel ADC 300Ksps (ADC) - 1 DAC 500Ksps (DACC) - 4 Analog Comparators (ACIFC) - Capacitive Touch Module (CATB) - Audio Bitstream DAC (ABDACB) - Inter-IC Sound (IISC) Controller - Peripheral Event System for Direct Peripheral to Peripheral Communication - 32-bit Cyclic Redundancy Check Calculation Unit (CRCCU) - Random generator (TRNG) - Parallel Capture Module (PARC) - Glue Logic Controller (GLOC) - PicoUART for extended UART wake-up capabilities I/O - Up to 75 I/O lines with external interrupt capability - Up to 6 High-drive I/O Pins.