Описание
The SAM3S8 series is a member of a family of Flash microcontrollers based on the high performance 32-bit ARM Cortex -M3 RISC processor. It operates at a maximum speed of 64 MHz and features 512 Kbytes of Flash (dual plane on SAM3SD8) and 64 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, 2(3) USARTs (3 on SAM3SD8C), 2 UARTs, 2 TWIs, 3 SPIs, an I2S, as well as a PWM timer, two 3-channel general-purpose 16-bit timers (with stepper motor and quadrature decoder logic support), an RTC, a 12-bit ADC, a 12-bit DAC and an analog comparator. The SAM3S8 series is ready for capacitive touch thanks to the QTouch library, offering an easy way to implement buttons, wheels and sliders. The SAM3S8 device is a medium range general purpose microcontroller with the best ratio in terms of reduced power consumption, processing power and peripheral set. This enables the SAM3S8/SD8 to sustain a wide range of applications including consumer, industrial control, and PC peripherals It operates from 1.62V to 3.6V and is available in 64- and 100-pin QFP, 64-pin QFN, and 100-pin BGA packages. The SAM3S8 series is the ideal migration path from the SAM7S series for applications that require more performance. The SAM3S8 series is pin-to-pin compatible with the SAM7S series.
- 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 legacy products (64-pin versions), SAM3S4/2/1 products
- Memories
- 512 Kbytes Dual Plane (SAM3SD8) embedded Flash, 128-bit wide access, memory accelerator
- 64 Kbytes embedded SRAM
- 16 Kbytes ROM with embedded boot loader 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 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
- RTC with Gregorian and Persian Calendar mode, waveform generation in low-power modes
- RTC clock calibration circuitry for 32.768 kHz crystal frequency compensation
- High precision 8/12 MHz factory trimmed internal RC oscillator with 4 MHz default frequency for device startup. In-application 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 24 peripheral DMA (PDC) channels
- Low Power Modes
- Sleep and Backup modes, down to < 2 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 3 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)
- Two 3-channel 16-bit Timer Counters 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 and auto calibration ??
- 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)
- Register Write Protection
