原标题：Silabs Si101x超低功耗无线MCU开发方案

　　Silabs 公司的Si101x系列是集成了240-960MHz RF收发器的超低功耗无线mcu，专门为需要RF双向通信链接的低功耗嵌入系统而设计。RF收发器的最大发送功率为+13或20dBm，灵敏度为-121dBm，采用GSK，GFSK和OOK调制;Si1014和Si1015还集成了效率高达90%的DC/DC升压转换器，从而大大增加了电池寿命。单电源1.8V-3.6V工作，主要用在智能表，家庭三表监测，无线传感器，家庭和建筑物自动化，接入控制和医疗系统。本文介绍了Si101x主要特性，方框图，Si1000和Si1010开发板主要特性，硬件建立框图以及主板和子板电路图。

　　Si1010-A Ultra-Low Power 16 kB, 12-bit ADCMCU with Integrated 240–960 MHz Transceiver

　　The Si101x wireless MCU family offers the industry’s lowest power single-chip microcontroller with an integrated sub-GHz RF transceiver. This wireless MCU family is designed to address the specific requirements of low-power embedded systems requiring an RF bi-directional communication link for applications such as smart metering, in-home utility monitoring, wireless security panels, access control and home/building automation.

　　The Si10xx family has the industry’s lowest power consumption in all modes: active, sleep and deep sleep. This ultra-low-power consumption is achieved without any compromses in wireless transceiver performance. Having the lowest system power allows for longer battery life, higher product performance and lower system cost.

　　The Si101x wireless MCU family offers devices that are configured with either 16 K or 8 K of on-board flash memory and a maximum transmit output power of +13 or +20 dBm. The Si1014 and Si1015 also include an integrated DC-DC boost converter with a switching efficiency of up to 90%, which can greatly increase system battery life.

　　Si101x主要特性：

　　Supply Voltage: 1.8 to 3.6 V

　　-Typical sleep mode current < 0.1 μA; retains state and RAM contents over full supply range; fast wakeup of < 2 μs

　　-Two built-in brown-out detectors cover sleep and active modes

　　12-Bit Analog to Digital Converter

　　-Up to 75 ksps

　　-Up to 11 external inputs

　　-External pin or internal VREF (no external capacitor required)

　　-External conversion start input option

　　-Autonomous Burst Mode with 16-bit automatic averaging accumulator

　　-Built-in temperature sensor

　　Dual Comparators

　　-Programmable hysteresis and response time

　　-Configurable as interrupt or reset source

　　-Low current (< 0.5 μA)

　　Memory

　　-16 kB bytes Flash; in-system programmable in 512-byte sectors; full read/write/erase functionality over the entiresupply range

　　-768 bytes internal data RAM

　　On-Chip Debug

　　-On-chip debug circuitry facilitates full speed, non-intrusive in-system debug (no emulator required)

　　High-Speed 8051 μC Core

　　-Pipe-lined instruction architecture; executes 70% of instructions in 1 or 2 system clocks

　　-25 MIPS peak throughput with 25 MHz clock

　　Transceiver Features

　　- frequency range = 240–960 MHz

　　- Sensitivity = –121 dBm

　　- FSK, GFSK, and OOK modulation

　　- Max output power = +20 dBm

　　- RF power consumption

　　- 18.5 mA receive

　　- 85 mA @ +20 dBm transmit

　　- Data rate = 0.123 to 256 kbps

　　- Auto-frequency calibration (AFC)

　　- Antenna diversity and transmit/receive switch control

　　- Programmable packet handler

　　- TX and RX 64 byte FIFOs

　　- Frequency hopping capability

　　- On-chip crystal tuning

　　Digital Peripherals

　　-15 port I/O

　　-Hardware enhanced UART, SPI and I2C serial ports available concurrently

　　-Low power 32-bit smaRTClock

　　-Four general purpose 16-bit counter/timers; six channel programmable counter array (PCA)

　　Clock Sources

　　-Precision internal oscillators: 24.5 MHz with ±2% accuracy sup­ports UART operation; spread-spectrum mode for reduced EMI

　　-Low power 20 MHz internal oscillator

　　-External oscillator: crystal, RC, C, CMOS clock

　　-smaRTClock oscillator: 32.768 kHz crystal or self-oscillate

　　Ordering Guide

　　-Si1010-A-GM, 42-pin QFN, 5 x 7 mm2

　　Development Kit: Si1010DK

　　Si101x应用：

　　Smart metering

　　In-home utility monitoring

　　Wireless security panels

　　Wireless sensors

　　Home and building automation

　　Access control

　　Medical systems

　　图1。Si101x方框图

　　Si1000和Si1010开发板

　　The Si1000 and Si1010 Development Kits are intended as development platforms for the microcontrollers in the Si100x and Si101x MCU family, respectively. The members of these MCU families include Si1000, Si1001, Si1002, Si1003, Si1004, Si1005, Si1010, Si1011, Si1012, Si1013, Si1014, and Si1015. Each kit consists of a motherboard and daughtercard. The daughtercard included in the kit is configured for high band (868/915 MHz) and up to +20 dBm transmit power. Additional daughtercards may be purchased separately for low band or low transmit power applications.

　　Si1000和Si1010开发板包括：

　　The Si1000 and Si1010 Development Kit contains the following items:

　　Si1000 motherboard which supports all Si10xx series daughtercards

　　Si1000 or Si1010 daughtercard (Si1000 or Si1010 MCU pre-soldered on the daughtercard)

　　Si10xx Development Kit Quick-Start Guide

　　Silicon Laboratories IDE and Product Information CD-ROM. CD content includes the following:

　　Silicon Laboratories Integrated Development Environment (IDE)

　　Keil 8051 Development Tools (macro assembler, linker, evaluation C compiler)

　　Source code examples and register definition files

　　Documentation

　　Si1000 and Si1010 Development Kit User’s Guide (this document)

　　AC to DC Power Adapter

　　USB Debug Adapter (USB to Debug Interface)

　　2 USB cables

　　2 AAA batteries

　　图2。Si1000主板和子板外形图

　　图3。采用USB调试适配器的硬件建立框图

　　图4。Si1000主板电路图(1)

　　图5。Si1000主板电路图(2)

　　图6。Si1000主板电路图(3)