Описание
The SAM4S series is a member of a family of Flash microcontrollers based on the high-performance 32-bit ARM Cortex -M4 RISC processor. It operates at a maximum speed of 120 MHz and features up to 2048 Kbytes of Flash, with optional dual-bank implementation and cache memory, and up to 160 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 to connect to SRAM, PSRAM, NOR Flash, LCD Module and NAND Flash, 2 USARTs, 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 SAM4S series is ready for capacitive touch, offering native support for the QTouch library for easy implementation of buttons, wheels and sliders. The SAM4S 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. In Backup mode, only the low-power RTC and wakeup logic are running. The real-time event management allows peripherals to receive, react to and send events in Active and Sleep modes without processor intervention. The SAM4S 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 SAM4S to sustain a wide range of applications that includes consumer, industrial control, and PC peripherals. SAM4S devices operate from 1.62V to 3.6V.
- Core
- ARM Cortex-M4 with 2 Kbytes of cache running at up to 120 MHz
- Memory Protection Unit (MPU)
- DSP Instruction Set
- Thumb®-2 instruction set
- Pin-to-pin compatible with SAM3N, SAM3S, SAM4N and SAM7S legacy products (64-pin version)
- Memories
- Up to 2048 Kbytes embedded Flash with optional dual-bank and cache memory, ECC, Security Bit and Lock Bits
- Up to 160 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 mode
- RTC counter calibration circuitry compensates for 32.768 kHz crystal frequency inaccuracy
- 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 240 MHz for device clock and for USB
- Temperature sensor
- Low-power tamper detection on two inputs, anti-tampering by immediate clear of general-purpose backup registers (GPBR)
- Up to 22 Peripheral DMA (PDC) channels
- Low-power Modes
- Sleep, Wait and Backup modes; consumption down to 1 µA in Backup mode
- Peripherals
- USB 2.0 Device: 12 Mbps, 2668 byte FIFO, up to 8 bidirectional Endpoints, on-chip transceiver
- Up to two USARTs with ISO7816, IrDA®, RS-485, SPI, Manchester and Modem Mode Two 2-wire UARTs
- Up to two 2-Wire Interface modules (I2C-compatible), one SPI, one Serial Synchronous Controller (I2S), one 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
