原标题：Silabs EFM32GG11低功耗32位ARM MCU开发方案

　　Silabs公司的EFM32 Giant Gecko Series 1 系列EFM32GG11基于32位ARM Cortex®-M4内核的MCU,通过支持AES, ECC, SHA的独特加密硬件引擎和真正的随机号发生器(TRNG)提供非常可靠的安全性.器件包括SD/MMC/SDIO控制器,八/四-SPI存储器控制器,10/100以太网MAC,CAN控制器高度可靠的容性检测,增强的Alpha混合图形引擎,以及用于智能电表的LESENSE/PCNT.工作模式超低电流,节能模式叫醒时间短,非常适合电池能源的设备和其它需要高性能低功耗的应用如智能电表,工业和工厂自动化,家庭自动化和安全,物联网(IoT)设备,以及中高级可穿戴设备.本文介绍了EFM32GG11主要特性,功能框图,EFM32GG11入门套板SLSTK3701A,硬件布局图,框图和电路图.

　　Silicon Labs ’EFM32™ Giant Gecko Series 1 ARM® Cortex®-M4 based 32-bit microcontrollers (MCUs) provides robust security via a unique cryptographic hardware engine supporting AES, ECC, SHA, and True Random Number Generator (TRNG). New features include an SD/MMC/SDIO controller, Octal/ Quad-SPI memory controller, 10/100 Ethernet MAC, dual CAN bus controller, highly robust capacitive sensing, enhanced alpha blending graphics engine, and LESENSE/PCNT enhancements for smart energy meters. These features, combined with ultra-low current active mode and short wake-up time from energy-saving modes, make EFM32GG11 microcontrollers well suited for any battery-powered application, as well as other systems requiring high performance and low-energy consumption.

　　EFM32GG11主要特性:

　　ARM Cortex-M4 CPU platform

　　High performance 32-bit processor @ up to 72 MHz

　　DSP instruction support and Floating Point Unit

　　Memory Protection Unit

　　Wake-up Interrupt Controller

　　Flexible Energy Management System

　　77 μA/MHz in Active Mode (EM0)

　　1.6 μA EM2 Deep Sleep current (16 kB RAM retention and RTCC running from LFRCO)

　　Integrated DC-DC buck converter

　　Up to 2048 kB flash program memory

　　Dual-bank with read-while-write support

　　Up to 512 kB RAM data memory

　　256 kB with ECC (SEC-DED)

　　Octal/Quad-SPI Flash Memory Interface

　　Supports 3 V and 1.8 V memories

　　1/2/4/8-bit data bus

　　Quad-SPI Execute In Place (XIP)

　　Up to 30 MHz SDR/DDR at 3 V

　　Communication Interfaces

　　Low-energy Universal Serial Bus (LEUSB) with Device, Host, and OTG support

　　Fully USB 2.0 compliant

　　On-chip PHY and embedded 5 V to 3.3 V regulator

　　Crystal-free Device mode operation

　　Patent-pending Low-Energy Mode (LEM)

　　SD/MMC/SDIO Host Controller

　　SD v3.01, SDIO v3.0 and MMC v4.51 up to 50 MHz

　　1/4/8-bit bus width

　　10/100 Ethernet MAC with MII/RMII interface

　　IEEE1588-2008 precision time stamping

　　Energy Efficient Ethernet (802.3az)

　　Up to 2× CAN Bus Controller

　　Version 2.0 A and 2.0 B up to 1 Mbps

　　6× Universal Synchronous/Asynchronous Receiver/ Transmitter

　　UART/SPI/SmartCard (ISO 7816)/IrDA/I2S/LIN

　　Triple buffered full/half-duplex operation with flow control

　　Ultra high speed (36 MHz) operation on one instance

　　2× Universal Asynchronous Receiver/ Transmitter

　　2× Low Energy UART

　　Autonomous operation with DMA in Deep Sleep Mode

　　3 × I²C Interface with SMBus support

　　Address recognition in EM3 Stop Mode

　　Up to 144 General Purpose I/O Pins

　　Configurable push-pull, open-drain, pull-up/down, input filter, drive strength

　　Configurable peripheral I/O locations

　　5 V tolerance on select pins

　　Asynchronous external interrupts

　　Output state retention and wake-up from Shutoff Mode

　　Up to 24 Channel DMA Controller

　　Up to 24 Channel Peripheral Reflex System (PRS) for autonomous inter-peripheral signaling

　　External Bus Interface for up to 4 x 256 MB of external memory mapped space

　　TFT Controller with Direct Drive

　　Per-pixel alpha-blending engine

　　Hardware Cryptography

　　AES 128/256-bit keys

　　ECC B/K163, B/K233, P192, P224, P256

　　SHA-1 and SHA-2 (SHA-224 and SHA-256)

　　True Random Number Generator (TRNG)

　　Hardware CRC engine

　　Single-cycle computation with 8/16/32-bit data and 16-bit (programmable)/32-bit (fixed) polynomial

　　Security Management Unit (SMU)

　　Fine-grained access control for on-chip peripherals

　　Integrated Low-energy LCD Controller with up to 8×36 segments

　　Voltage boost, contrast and autonomous animation

　　Patented low-energy LCD driver

　　Backup Power Domain

　　RTCC and retention registers in a separate power domain, available in all energy modes

　　Operation from backup battery when main power absent/ insufficient

　　Ultra Low-Power Precision Analog Peripherals

　　2× 12-bit 1 Msamples/s Analog to Digital Converter (ADC)

　　On-chip temperature sensor

　　2× 12-bit 500 ksamples/s Digital to Analog Converter (VDAC)

　　Digital to Analog Current Converter (IDAC)

　　Up to 4× Analog Comparator (ACMP)

　　Up to 4× Operational Amplifier (OPAMP)

　　Robust current-based capacitive sensing with up to 64 inputs and wake-on-touch (CSEN)

　　Up to 108 GPIO pins are analog-capable. Flexible analog peripheral-to-pin routing via Analog Port (APORT)

　　Supply Voltage Monitor

　　Timers/Counters

　　7× 16-bit Timer/Counter

　　3 + 4 Compare/Capture/PWM channels (4 + 4 on one timer instance)

　　Dead-Time Insertion on several timer instances

　　4× 32-bit Timer/Counter

　　32-bit Real Time Counter and Calendar (RTCC)

　　24-bit Real Time Counter (RTC)

　　32-bit Ultra Low Energy CRYOTIMER for periodic wakeup from any Energy Mode

　　2× 16-bit Low Energy Timer for waveform generation

　　3× 16-bit Pulse Counter with asynchronous operation

　　2× Watchdog Timer with dedicated RC oscillator

　　Low Energy Sensor Interface (LESENSE)

　　Autonomous sensor monitoring in Deep Sleep Mode

　　Wide range of sensors supported, including LC sensors and capacitive buttons

　　Up to 16 inputs

　　Ultra efficient Power-on Reset and Brown-Out Detector

　　Debug Interface

　　2-pin Serial Wire Debug interface

　　1-pin Serial Wire Viewer

　　4-pin JTAG interface

　　Embedded Trace Macrocell (ETM)

　　Pre-Programmed USB/UART Bootloader

　　Wide Operating Range

　　1.8 V to 3.8 V single power supply

　　Integrated DC-DC, down to 1.8 V output with up to 200 mA load current for system

　　Standard (-40 ℃ to 85 ℃ TAMB) and Extended (-40 ℃ to 125 ℃ TJ) temperature grades available

　　Packages:

　　64-pin QFN (9 mm x 9 mm)

　　64-pin QFP (10 mm x 10 mm)

　　100-pin QFP (14 mm x 14 mm)

　　112-pin BGA (10 mm x 10 mm)

　　120-pin BGA (7 mm x 7 mm)

　　152-pin BGA (8 mm x 8 mm)

　　192-pin BGA (7 mm x 7 mm)

　　EFM32GG11应用:

　　• Smart energy meters

　　• Industrial and factory automation

　　• Home automation and security

　　• Mid- and high-tier wearables

　　•IoT devices

　　图1.EFM32GG11功能框图

　　图2.EFM32GG11详细框图

　　EFM32GG11入门套板SLSTK3701A

　　The SLSTK3701A Starter Kit is an excellent starting point to getfamiliar with the EFM32™ Giant Gecko GG11 Microcontroller.

　　The Starter Kit contains sensors and peripherals demonstrating some of the Giant Gecko

　　GG11 ’s many capabilities. The kit provides all necessary tools for developing an EFM32

　　Giant Gecko GG11 application.

　　入门套板SLSTK3701A目标器件:

　　• EFM32 Giant Gecko GG11 Microcontroller(EFM32GG11B820F2048GL192)

　　• CPU: 32-bit ARM® Cortex-M4® with FPU

　　• Memory: 2048 kB flash and 512 kB RAM

　　入门套板SLSTK3701A主要特性:

　　• USB connectivity

　　• Advanced Energy Monitor

　　• SEGGER J-Link on-board debugger

　　• Debug Multiplexer supporting externalhardware as well as on-board MCU

　　• Silicon Labs Si7021 Relative Humidity andTemperature sensor

　　• User LEDs / Pushbuttons

　　• Ultra low power 128x128 pixel colorMemory LCD

　　• Inductive LC sensor

　　• Silicon Labs Si7210 Hall-Effect Sensor

　　• Digital Stereo Microphones

　　• Micro-SD Slot

　　• Ethernet connectivity

　　• Capacitive Touch Slider

　　• 20-pin 2.54 mm header for expansionboards

　　• Breakout pads for direct access to I/O pins

　　• Power sources include USB and CR2032coin cell battery.

　　图3.入门套板SLSTK3701A外形图

　　图4.入门套板SLSTK3701A硬件布局图

　　图5.入门套板SLSTK3701A框图

　　详情请见:

BRD2204A-B00-schematic.pdf

ug287-stk3701.pdf

efm32gg11-datasheet.pdf