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      參數(shù)資料
      型號(hào): PIC12F683-I/MD
      廠商: Microchip Technology
      文件頁數(shù): 137/176頁
      文件大小: 0K
      描述: IC PIC MCU FLASH 2KX14 8DFN
      產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
      8-bit PIC® Microcontroller Portfolio
      Digi-Key 應(yīng)用說明: AN0005 PWM Example with Microchip's CCP Module
      AN0005 Example Code
      標(biāo)準(zhǔn)包裝: 91
      系列: PIC® 12F
      核心處理器: PIC
      芯體尺寸: 8-位
      速度: 20MHz
      外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
      輸入/輸出數(shù): 5
      程序存儲(chǔ)器容量: 3.5KB(2K x 14)
      程序存儲(chǔ)器類型: 閃存
      EEPROM 大?。?/td> 256 x 8
      RAM 容量: 128 x 8
      電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
      數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b
      振蕩器型: 內(nèi)部
      工作溫度: -40°C ~ 85°C
      封裝/外殼: 8-VDFN 裸露焊盤
      包裝: 管件
      產(chǎn)品目錄頁面: 645 (CN2011-ZH PDF)
      配用: AC164326-ND - MODULA SKT PM3 20QFN
      I3-DB12F683-ND - BOARD DAUGHTER ICEPIC3
      2007 Microchip Technology Inc.
      DS41211D-page 61
      PIC12F683
      9.0
      ANALOG-TO-DIGITAL
      CONVERTER (ADC) MODULE
      The
      Analog-to-Digital
      Converter
      (ADC)
      allows
      conversion of an analog input signal to a 10-bit binary
      representation of that signal. This device uses analog
      inputs, which are multiplexed into a single sample and
      hold circuit. The output of the sample and hold is
      connected to the input of the converter. The converter
      generates a 10-bit binary result via successive
      approximation and stores the conversion result into the
      ADC result registers (ADRESL and ADRESH).
      The ADC voltage reference is software selectable to
      either VDD or a voltage applied to the external reference
      pins.
      The ADC can generate an interrupt upon completion of
      a conversion. This interrupt can be used to wake-up the
      device from Sleep.
      Figure 9-1 shows the block diagram of the ADC.
      FIGURE 9-1:
      ADC BLOCK DIAGRAM
      9.1
      ADC Configuration
      When configuring and using the ADC the following
      functions must be considered:
      GPIO configuration
      Channel selection
      ADC voltage reference selection
      ADC conversion clock source
      Interrupt control
      Results formatting
      9.1.1
      GPIO CONFIGURATION
      The ADC can be used to convert both analog and digital
      signals. When converting analog signals, the I/O pin
      should be configured for analog by setting the associated
      TRIS and ANSEL bits. See the corresponding GPIO
      section for more information.
      9.1.2
      CHANNEL SELECTION
      The CHS bits of the ADCON0 register determine which
      channel is connected to the sample and hold circuit.
      When changing channels, a delay is required before
      starting the next conversion. Refer to Section 9.2
      “ADC Operation” for more information.
      GP0/AN0
      A/D
      GP1/AN1/VREF
      GP2/AN2
      VDD
      VREF
      ADON
      GO/DONE
      VCFG = 1
      VCFG = 0
      CHS
      ADRESH
      ADRESL
      10
      ADFM
      GP4/AN3
      0
      = Left Justify
      1
      = Right Justify
      Note:
      Analog voltages on any pin that is defined
      as a digital input may cause the input
      buffer to conduct excess current.
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