描述 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.

特性 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