Atmel SMART SAM4S无线PIR照相机参考设计

Atmel公司的SMART SAM4S系列产品是基于32位ARM® Cortex®-M4 RISC内核的高性能闪存的微控制器,工作频率120MHz,集成了多达2048KB闪存和多达160KB SRAM,集成的外设包括带收发器的全速USB器件端口,用于SDIO/SD/MMC的高速MCI和用来连接SRAM,PSRAM,NOR闪存,LCD模块和NAND闪存的外部总线接口,以及2个USART,2个UART,2个TWI,3个SPI,I2S以及PWM计时器,两个3路通用16位计时器,RTC,12位ADC,12位DAC和模拟比较器,主要消费类电子,工业控制和PC外设.本文介绍了SMART SAM4S系列产品主要特性,框图,SAM4S-WPIR-RD参考设计板框图和电路图.
The Atmel®|SMART SAM4S series is a member of a family of Flashmicrocontrollers based on the high-performance 32-bit ARM® Cortex®-M4 RISCprocessor. It operates at a maximum speed of 120 MHz and features up to2048 Kbytes of Flash, with optional dual-bank implementation and cachememory, and up to 160 Kbytes of SRAM. The peripheral set includes a full-speedUSB Device port with embedded transceiver, a high-speed MCI forSDIO/SD/MMC, an External Bus Interface featuring a Static Memory Controller toconnect to SRAM, PSRAM, NOR Flash, LCD Module and NAND Flash, 2USARTs, 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 quadraturedecoder logic support), an RTC, a 12-bit ADC, a 12-bit DAC and an analogcomparator.
The SAM4S series is ready for capacitive touch, offering native support for theAtmel QTouch® library for easy implementation of buttons, wheels and sliders.
The Atmel|SMART SAM4S devices have three software-selectable low-powermodes: Sleep, Wait and Backup. In Sleep mode, the processor is stopped whileall other functions can be kept running. In Wait mode, all clocks and functions arestopped but some peripherals can be configured to wake up the system based onpredefined conditions. In Backup mode, only the low-power RTC and wakeuplogic are running.
The real-time event management allows peripherals to receive, react to and sendevents in Active and Sleep modes without processor intervent...