Description Atmels SAM3S series is a member of a family of 32-bit Flash microcontrollers based on the high performance ARM Cortex-M3 processor. It operates at a maximum speed of 64 MHz and features up to 256 Kbytes of Flash and up to 48 Kbytes of SRAM. The peripheral set includes a Full Speed USB Device port with embedded transceiver, a High Speed MCI for SDIO/SD/MMC, an External Bus Interface featuring a Static Memory Controller providing connection to SRAM, PSRAM, NOR Flash, LCD Module and NAND Flash, 2x USARTs, 2x UARTs, 2x TWIs, 3x SPI, an I2S, as well as 1 PWM timer, 6x general-purpose 16-bit timers, an RTC, an ADC, a 12-bit DAC and an analog comparator. Features • 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 – From 64 to 256 Kbytes embedded Flash, 128-bit wide access, memory accelerator, single plane – From 16 to 48 Kbytes embedded 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 – Memory Protection Unit (MPU) • System – Embedded voltage regulator for single supply operation – Power-on-Reset (POR), Brown-out Detector (BOD) and Watchdog for safe operation – Quartz or ceramic resonator oscillators: 3 to 20 MHz main power with Failure Detection 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 frequency for device startup. Inapplication trimming access for frequency adjustment – 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) channels • Low Power Modes – Sleep and Backup modes, down to 1.8 µA in Backup mode – Ultra low power RTC • Peripherals – USB 2.0 Device: 12 Mbps, 2668 byte FIFO, up to 8 bidirectional Endpoints. On-Chip Transceiver – 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-Channel 16-bit Timer/Counter with capture, waveform, compare and PWM mode. Quadrature Decoder Logic and 2-bit Gray Up/Down Counter for Stepper Motor – 4-channel 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-channel, 1Msps ADC with differential input mode and programmable gain stage – One 2-channel 12-bit 1Msps DAC – One Analog Comparator with flexible input selection, Selectable input hysteresis – 32-bit Cyclic Redundancy Check Calculation Unit (CRCCU) – Write Protected Registers • I/O – Up to 79 I/O lines with external interrupt capability (edge or level sensitivity), debouncing, glitch filtering and on-die Series Resistor Termination – Three 32-bit Parallel Input/Output Controllers, Peripheral DMA assisted Parallel Capture Mode • Packages – 100-lead LQFP, 14 x 14 mm, pitch 0.5 mm/100-ball TFBGA, 9 x 9 mm, pitch 0.8 mm – 64-lead LQFP, 10 x 10 mm, pitch 0.5 mm/64-pad QFN 9x9 mm, pitch 0.5 mm – 48-lead LQFP, 7 x 7 mm, pitch 0.5 mm/48-pad QFN 7x7 mm, pitch 0.5 mm
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