EDMI 4432-A RF Module User Manual x

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4432 A User Manual HTML Version

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UserGuideToRF915MHzISMModule

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第一章硬件介绍 Chapter 1 HardWare Introduce

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1.1 MSi4432 低功率无线模块硬件接口主要定义 Functional Block Diagram：

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MSi4432低功率无线模块硬件接口主要定义：

MSi4432 Low-power Wireless Module Hardware Interface - Main definitions:

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芯片型号

Chip Model

引脚序号和名称定义

Pin Number and Definition

排针间距

Pin Header’s

Spacing

12345

Si4432+78F0503AVDDGNDRXDTXDRST2.00mm

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1.2 接口名称详细说明 (IO 输入输出状态以模块本身作为对象描述) Detailed Specifications

of Interface Names (IO Input and Output Status Descriptions by treating Module itself as an

object)

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序号

S/N

接口名称

Interface

Name

I/O描述

Description

1VDD电源

Power

Supply

供电电压 3.3V，输入电流 100mA。

Powersupplyvoltageis3.3V;Inputcurrentis100mA.

2GND地

Ground

电路接地。

Circuitisgrounded.

3RXDI 模块串行数据输入接口，数字输入，与模块 MCUUART口

RXPin连接

Module’sserialdataisinputtointerface—asdigitalinput,

andisconnectedtothemodule’sMCUUARTport’sRXPin.

4TXDO模块串行数据输出接口，数字输出，与模块 MCUUART口

TXPin连接

Module’sserialdataisoutputtointerface—asdigitalinput,

andisconnectedtothemodule’sMCUUARTport’sTXPin.

5RSTI 模块 0~3.3V数字输入，RST低电平脉冲宽度>20uS芯片复

位，RST=1芯片工作。

Module’s0~3.3Vdigitalinput—RSTlowlevelpulsewidth

is>20uSwhenchipresets;RST=1whenchipisoperating.

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1.3 接口电气特征 Interface’s Electrical Characteristics

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最大额定值 Maximum Rated Values

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参数 Parameter 符号 Symbol 条件 Conditions 额度 Limits 单位 Units

供电电压

PowerSupplyVoltage

VDD

‐0.5~3.6V

GND‐0.5~+0.3V

输入电压

InputVoltage

VIRXD,TXD,RST‐0.3~VDD+0.3V

输出电压

OutputVoltage

VORXD,TXD,RST‐0.3~VDD+0.3V

输出电流,高

OutputCurrent,High

IOHRXD,TXD,RST‐10.0mA

所有引脚总和

TotalofAllPins

‐25.0mA

输出电流,低

OutputCurrent,Low

IOLRXD,TXD,RST30.0mA

所有引脚总和

TotalofAllPins

60.0mA

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DC特征 Characteristics

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参数

Parameter

符号

Symbol

条件

Conditions

最小值

Minimum

Value

典型值

Typical

Value

最大值

Maximum

Value

单位

Units

供电电压

PowerSupply

Voltage

VDD

1.83.33.6V

输出电流，高

Output

Current,High

IOH1.8V≤VDD≤3.6V

‐1.0mA

输出电流，低

Output

Current,Low

IOL1.8V≤VDD≤3.6V

2.0mA

输入电压，高

InputVoltage,

High

VIHRXD,RST0.8VDDVDDV

输入电压，低

InputVoltage,

Low

VILRXD,RST00.2VDDV

输出电压，高 VOHTXD0.8VDDVDDV

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参数

Parameter

符号

Symbol

条件

Conditions

最小值

Minimum

Value

典型值

Typical

Value

最大值

Maximum

Value

单位

Units

Output

Voltage,High

    

输出电压，低

Output

Voltage,Low

VOLTXD00.2VDDV

上拉电阻

Pull‐up

Resistor

RPU RXD10 

kΩ

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1.4 模块尺寸和接口位置图

Diagrams showing Dimensions of Module and Location of Interface

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Figure 图 1：接口位置和 PCB板尺寸图

Interface’s Location and PCB Board’s Dimensions Diagram

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Figure 图 2：模块实物图 Module’s Physical 3D Picture/ Stereograph

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1.5 接口参数 Interface Parameters

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a.接口方式 Interface Method：UART，TTL电平 Level，

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串口波特率 9600bps，8数据位，1起始位，1个停止位，偶校验位；

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Interface baud rates 9600bps 8 Data bits, 1Start bit,1 Stop bit, with Even check bit.

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b.最大应用数据包 Maximum Apply Data Packet ：64bytes；

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第二章软件介绍 Chapter 2 Software Introduce

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2.1通讯接口配置 Cominterfaceconfiguration

配置主机串口波特率 9600bps，8位数据位，1位起始位，1位停止位和偶校验位；

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Configuration Host Interface as baud rates 9600bps 8 Data bits, 1Start bit,1 Stop bit,

with Even check bit.

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2.2数据接收和发送方式 Themethodofsendandreceivedata

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数据接收：模块上电，复位管脚 RST处于高电平，3S后模块工作处于接收状态，收到

无线数据便转发数据到串口给主机，接收数据长度不大于 64字节；

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Data receive:Power on the RF module and keep RST pin with high level,After 3 seconds

Module works in receive states, When it received data from RF, module send the data to the

Host by UART. The receive data less than 64 bytes.

数据发送：模块上电工作，当收到串口数据则将数据通过无线发送，发送数据长度不大

于 64字节；

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Data send: Power on the RF module,When it received data form UART,then send the data

by RF channel. The send data less than 64 bytes.

2.3复位模块 Reset the module

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如果模块工作异常，将复位管脚 RST置低电平 100uS以上，模块重新复位，RST保持高

电平模块工作；

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If the module work failure,Set RST pin to low level upto 100uS,Keep the RST pin for higt

level module restart work.

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FCCCaution.

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§ 15.19Labellingrequirements.

Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothefollowingtwo

conditions:(1)Thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustaccept

anyinterferencereceived,includinginterferencethatmaycauseundesiredoperation.

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§ 15.21Informationtouser.

AnyChangesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliance

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couldvoidtheuser'sauthoritytooperatetheequipment.

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§ 15.105Informationtotheuser.

Note:ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigital

device,pursuanttopart15oftheFCCRules.Theselimitsaredesignedtoprovidereasonable

protectionagainstharmfulinterferenceinaresidentialinstallation.Thisequipmentgenerates

usesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththe

instructions,maycauseharmfulinterferencetoradiocommunications.However,thereisno

guaranteethatinterferencewillnotoccurinaparticularinstallation.Ifthisequipmentdoes

causeharmfulinterferencetoradioortelevisionreception,whichcanbedeterminedbyturning

theequipmentoffandon,theuserisencouragedtotrytocorrecttheinterferencebyoneor

moreofthefollowingmeasures:

‐Reorientorrelocatethereceivingantenna.

‐Increasetheseparationbetweentheequipmentandreceiver.

‐Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiveris

connected.

‐Consultthedealeroranexperiencedradio/TVtechnicianforhelp.

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TheMSi4432moduleisdesignedtocomplywiththeFCC

statement.FCCIDis2AC6H4432‐A.ThehostsystemusingMSi4432,

shouldhavelabelindicated   

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Thisradiomodulemustnotinstalledtoco‐locateandoperating

simultaneouslywithotherradiosinhostsystem,additionaltesting

andequipmentauthorizationmayberequiredtooperating

simultaneouslywithotherradio.

contains the module’s FCC ID

EDMI 4432-A RF Module User Manual x

EDMI (Shenzhen) Co., Ltd RF Module x

Users Manual

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