HT49 MCU的可编程分频器(PFD)使用指南 本文主要介绍 HT49 单片机可编程分频器（PFD）的使用及注意事项。
上传时间： 2013-11-03
上传用户：crazyer
多功能电源图纸, 是PFD的电路图纸
上传时间： 2014-07-18
上传用户：ecooo
PLL system LPF/PFD/VCO/Divider model in Matlab,在Matlab中将PLL系统的各个模块模型话，便于分析整个PLL的环路稳定特性，锁定时间等…… 附录中包含完整的Matlab code
上传时间： 2013-12-20
上传用户：l254587896
Analytic Hierarchy Process Techniques, written in PFD format
标签： Techniques Hierarchy Analytic Process
上传时间： 2014-12-01
上传用户：manking0408
HT49R30A-1八位单片机特点工作电压3.0V ~ 5.5V6 位输入口8 位双向输入/输出口2 个外部中断输入带PFD 可编程分频器功能的一个8 位可编程定时/计数器带19 3 或19 4 段 的LCD 驱动器2K 14 位的程序存储器EPROM96 8 位的数据存储器RAM实时时钟RTC实时时钟RTC 的8 位前置分频器
上传时间： 2013-11-20
上传用户：GeekyGeek
I/O 型单片机使用手册 目录 间接寻址寄存器 – IAR, IAR0, IAR1 .............................................35间接寻址指针 – MP, MP0, MP1 ......................................................35存储区指针 – BP .........................................................................36累加器 – ACC...................................................................................37程序计数器低字节寄存器 – PCL....................................................37表格寄存器 – TBLP,TBHP,TBLH....................................................37看门狗定时寄存器 – WDTS............................................................38状态寄存器 – STATUS.....................................................................38中断控制寄存器 – INTC,INTC0,INTC1 .........................................39定时/计数寄存器...............................................................................39输入/输出端口和控制寄存器...........................................................40UART 寄存器 .USR,UCR1,UCR2,TXR/RXR,BRG.......................40输入/输出端口..........................................................................................41上拉电阻............................................................................................41PA 口的唤醒......................................................................................41输入/输出端口控制寄存器...............................................................41引脚共享功能....................................................................................42编程注意事项....................................................................................45定时/计数器..............................................................................................46配置定时/计数器输入时钟源...........................................................47定时/计数寄存器 – TMR, TMR0,TMR0L/TMR0H,TMR1L/TMR1H,TMR2.....................................................................49定时/计数控制寄存器 – TMRC,TMR0C,TMR1C,TMR2C............50定时器模式........................................................................................53事件计数器模式................................................................................53脉冲宽度测量模式............................................................................54可编程分频器(PFD)和蜂鸣器的应用..............................................55预分频器(Prescaler)...........................................................................56输入/输出接口...................................................................................56编程注意事项....................................................................................57定时/计数器应用范例.......................................................................57中断............................................................................................................59中断寄存器........................................................................................59中断优先权........................................................................................62外部中断............................................................................................63定时/计数器中断...............................................................................64UART 中断........................................................................................64编程注意事项....................................................................................65复位和初始化............................................................................................66复位....................................................................................................66目录iii异步串行口——UART............................................................................74UART 特性..........................................................................................74UART 外部引脚..................................................................................74数据发送.............................................................................................75UART 状态控制寄存器......................................................................75波特率发生器.....................................................................................79UART 设置与控制..............................................................................81UART 发送器......................................................................................83UART 接收器......................................................................................84接收错误处理.....................................................................................85接收中断图解.....................................................................................86地址检测模式.....................................................................................86暂停模式下的UART 功能.................................................................87UART 应用范例.................................................................................87振荡器........................................................................................................89系统时钟配置....................................................................................89系统晶体/陶瓷振荡器.......................................................................89系统电阻电容振荡器........................................................................90内部系统电阻电容振荡器................................................................90RTC 振荡器........................................................................................91看门狗定时振荡器............................................................................91暂停和唤醒................................................................................................92暂停.....................................................................................................92进入暂停.............................................................................................92静态电流.............................................................................................92唤醒....................................................................................................92看门狗定时器............................................................................................94掩膜选项....................................................................................................96应用电路....................................................................................................97第二部份 程序语言.....................................................................99第二章 指令集介绍.................................................................................101指令集......................................................................................................101指令周期..........................................................................................101数据的传送......................................................................................101算术运算..........................................................................................102逻辑和移位运算..............................................................................102分支和控制的转换..........................................................................102位运算..............................................................................................102查表运算..........................................................................................103其它运算..........................................................................................103指令设定一览表......................................................................................104惯例..................................................................................................104I/O 型单片机使用手册iv第三章 指令定义.....................................................................................107第四章 汇编语言和编译器.....................................................................121常用符号..................................................................................................121语句语法..................................................................................................122名称..................................................................................................122操作项..............................................................................................122操作数项..........................................................................................122注解..................................................................................................122编译伪指令..............................................................................................123条件编译伪指令..............................................................................123文件控制伪指令..............................................................................124程序伪指令......................................................................................126数据定义伪指令..............................................................................130宏指令..............................................................................................132汇编语言指令..........................................................................................136名称..................................................................................................136助记符..............................................................................................136操作数、运算子和表达式..............................................................136其它..........................................................................................................139前置引用..........................................................................................139局部标号..........................................................................................139汇编语言保留字..............................................................................140编译器选项..............................................................................................141编译列表文件格式..................................................................................141源程序列表......................................................................................141编译总结..........................................................................................142其它..................................................................................................142第三部份 开发工具................................................................... 145第五章 单片机开发工具.........................................................................147HT-IDE 集成开发环境............................................................................147盛群单片机仿真器(HT-ICE) ..................................................................149HT-ICE 接口卡.................................................................................149OTP 烧写器.....................................................................................149OTP 适配卡.....................................................................................149系统配置..................................................................................................150HT-ICE 接口卡设置........................................................................151安装..........................................................................................................153系统要求..........................................................................................153硬件安装..........................................................................................153软件安装..........................................................................................154目录v第六章 快速开始.....................................................................................159步骤一：建立一个新项目..............................................................159步骤二：将源程序文件加到项目中..............................................159步骤三：编译项目..........................................................................159步骤四：烧写OTP 单片机.............................................................160步骤五：传送程序与掩膜选项单至Holtek ..................................160附录............................................................................................... 161附录A 特性曲线图...................................................................................163附录B 封装信息.......................................................................................173
上传时间： 2013-10-18
上传用户：blacklee
IO 驱动 LCD , *** *** *** *** *** *** *** *** FILE NAME: IO_LCD MCU: HT46R22 MASK OPTION: WAKE-UP: PA6,PA7 PULL-HIGH: PA,PB,PC IIC: DISABLE PFD: DISABLE PWM: DISABLE WDT: ENABLE CLRWDT: ONE WDT CLOCK SOURCE: T1 WDT TIME OUT SELECT: WDT CLOCK SOURCE/32768 LVR: DISABLE OSC: CRYSTAL SYSVOLT: 3.0V SYSFRAG: 4000KHZ AUTHOR: RADOME HISTORY: 2005.08.
上传时间： 2014-12-21
上传用户：watch100
This paper presents the key circuits of a 1MHz bandwidth, 750kb/s GMSK transmitter. The fractional-N synthesizer forming the basis of the transmitter uses a combined phasefrequency detector (PFD) and digital-to-analog converter (DAC) circuit element to obtain >28dB high frequency noise reduction when compared to classicalfrequency synthesis.
标签： fractional-N transmitter bandwidth circuits
上传时间： 2016-04-14
上传用户：er1219
A novel met hod t o p artially compensate sigma2delta shap ed noise is p rop osed. By injecting t he comp en2 sation cur rent int o t he p assive loop f ilte r during t he delay time of t he p hase f requency detect or ( PFD) , a maximum reduction of t he p hase noise by about 16dB can be achieved. Comp a red t o ot he r compensation met hods , t he tech2 nique p rop osed he re is relatively simple and easy t o implement . Key building blocks f or realizing t he noise cancel2 lation , including t he delay va riable PFD and comp ensation cur rent source , a re sp ecially designed. Bot h t he behavior level and circuit level simulation results a re p resented.
标签： sigma2delta compensate injecting artially
上传时间： 2013-12-18
上传用户：qlpqlq
国内自主开发的银河麒麟系统，用户手册，PFD格式
标签：
上传时间： 2014-12-07
上传用户：牛津鞋
