Silabs EFM32HG32232位USB MCU开发方案

Silabs公司的EFM32HG322是低功耗USB 32位MCU,集成了功能强大的32位ARM Cortex-M0+核,创新的低功耗技术,缩短的叫醒时间和多种可选择的外设.32位处理器工作频率高达25MHz,主要用在能量,气体和水以及智能表,保健和健身应用,智能配件,告警和安全系统,工业和家庭自动化.本文介绍了EFM32HG322主要特性,框图,以及低功耗USB接口Happy Gecko入门套件SLSTK3400A主要特性和电路图.
The EFM32 MCUs are the world’s most energy friendly microcontrollers. With a unique combinationof the powerful 32-bit ARM Cortex-M0+, innovative low energy techniques, short wake-up time fromenergy saving modes, and a wide selection of peripherals, the EFM32HG microcontroller is well suitedfor any battery operated application as well as other systems requiring high performance and low-energyconsumption. This section gives a short introduction to each of the modules in general terms and alsoshows a summary of the configuration for the EFM32HG322 devices.
EFM32HG322主要特性:

• ARM Cortex-M0+ CPU platform
• High Performance 32-bit processor @ up to 25 MHz
• Wake-up Interrupt Controller
• Flexible Energy Management System
• 20 nA @ 3 V Shutoff Mode
• 0.6 μA @ 3 V Stop Mode, including Power-on Reset, Brown-outDetector, RAM and CPU retention
• 0.9 μA @ 3 V Deep Sleep Mode, including RTC with 32.768 kHzoscillator, Power-on Reset, Brown-out Detector, RAM and CPUretention
• 53 μA/MHz @ 3 V Sleep Mode
• 132 μA/MHz @ 3 V Run Mode, with code executed from flash
• 64/32 KB Flash
• 8/8 KB RAM
• 35 General Purpose I/O pins
• Configurable push-pull, open-drain, pull-up/down, input filter, drivestrength
• Configurable peripheral I/O locations
• 16 asynchronous external interrupts
• Output state retention and wake-up from Shutoff Mode
• 6 Channel DMA Controller
• 6 Channel Peripheral Reflex System (PRS) for autonomous inter-peripheral signaling
• Ha...