Описание
The SMART SAM4E series of Flash microcontrollers is based on the high-performance 32-bit ARM Cortex -M4 RISC processor and includes a floating point unit (FPU). It operates at a maximum speed of 120 MHz and features up to 1024 Kbytes of Flash, 2 Kbytes of cache memory and up to 128 Kbytes of SRAM. The SAM4E offers a rich set of advanced connectivity peripherals including 10/100 Mbps Ethernet MAC supporting IEEE 1588 and dual CAN. With a single precision FPU, advanced analog features, as well as a full set of timing and control functions, the SAM4E is the ideal solution for industrial automation, home and building control, machine-to-machine communications, automotive aftermarket and energy management applications. The peripheral set includes a full-speed USB device port with embedded transceiver, a 10/100 Mbps Ethernet MAC supporting IEEE 1588, 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, a parallel I/O capture mode for camera interface, hardware acceleration for AES256, 2 USARTs, 2 UARTs, 2 TWIs, 3 SPIs, as well as a 4- channel PWM, 3 three-channel general-purpose 32-bit timers (with stepper motor and quadrature decoder logic support), a low-power RTC, a low-power RTT, 256- bit General Purpose Backup Registers, 2 Analog Front End interfaces (16-bit ADC, DAC, MUX and PGA), one 12-bit DAC (2-channel) and an analog comparator. The SAM4E devices have three software-selectable low-power modes: Sleep, Wait and Backup. In Sleep mode, the processor is stopped while all other functions can be kept running. In Wait mode, all clocks and functions are stopped but some peripherals can be configured to wake up the system based on predefined conditions. The Real-time Event Management allows peripherals to receive, react to and send events in Active and Sleep modes without processor intervention.
- Core
- ARM® Cortex®-M4 with 2 Kbytes Cache running at up to 120 MHz(1)
- Memory Protection Unit (MPU)
- DSP Instruction
- Floating Point Unit (FPU)
- Thumb®-2 Instruction Set
- Memories
- Up to 1024 Kbytes Embedded Flash
- 128 Kbytes Embedded SRAM
- 16 Kbytes ROM with Embedded Boot Loader Routines (UART) and IAP Routines
- Static Memory Controller (SMC): SRAM, NOR, NAND Support.
- NAND Flash Controller.
- System
- Embedded Voltage Regulator for Single Supply Operation
- Power-on-Reset (POR), Brown-out Detector (BOD) and Dual 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 4/8/12 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
- One PLL up to 240 MHz for Device Clock and for USB
- Temperature Sensor
- Up to 2 Peripheral DMA Controller with up to 33 Channels (PDC)
- One 4-channel DMA Controller
- Low-power Modes
- Sleep and Backup Modes
- Ultra Low-power RTC
- Peripherals
- Two USARTs with USART1 (ISO7816, IrDA®, RS-485, SPI, Manchester and Modem Modes)
- USB 2.0 Device: Full Speed (12 Mbits), 2668 byte FIFO, up to 8 Endpoints. On-chip Transceiver
- Two 2-wire UARTs
- High Speed Multimedia Card Interface (SDIO/SD Card/MMC)
- One Master/Slave Serial Peripheral Interface (SPI) with Chip Select Signals
- Three 3-Channel 32-bit Timer/Counter with Capture, Waveform, Compare and PWM Mode. Quadrature Decoder Logic and 2-bit Gray Up/Down Counter for Stepper Motor
- 32-bit Real-time Timer and RTC with Calendar and Alarm Features
- One Ethernet MAC (EMAC) 10/100 Mbps in MII mode only with dedicated DMA and Support IEEE1588
- Two CAN Controllers: with eight Mailboxes
- 4-channel 16-bit PWM with Complementary Output, Fault Input, 12-bit Dead Time Generator Counter for Motor Control
- Real-time Event Management
