參數資料
型號: MC56F8345VFGE
廠商: Freescale Semiconductor
文件頁數: 63/172頁
文件大?。?/td> 0K
描述: IC DSP 16BIT 60MHZ 128-LQFP
標準包裝: 72
系列: 56F8xxx
核心處理器: 56800E
芯體尺寸: 16-位
速度: 60MHz
連通性: CAN,EBI/EMI,SCI,SPI
外圍設備: POR,PWM,溫度傳感器,WDT
輸入/輸出數: 49
程序存儲器容量: 136KB(68K x 16)
程序存儲器類型: 閃存
RAM 容量: 6K x 16
電壓 - 電源 (Vcc/Vdd): 2.25 V ~ 3.6 V
數據轉換器: A/D 16x12b
振蕩器型: 外部
工作溫度: -40°C ~ 105°C
封裝/外殼: 128-LQFP
包裝: 托盤
配用: MC56F8367EVME-ND - EVAL BOARD FOR MC56F83X
Equivalent Circuit for ADC Inputs
56F8345 Technical Data, Rev. 17
Freescale Semiconductor
155
Preliminary
10.16 Equivalent Circuit for ADC Inputs
Figure 10-22 illustrates the ADC input circuit during sample and hold. S1 and S2 are always open/closed
at the same time that S3 is closed/open. When S1/S2 are closed & S3 is open, one input of the sample and
hold circuit moves to VREFH - VREFH / 2, while the other charges to the analog input voltage. When the
switches are flipped, the charge on C1 and C2 are averaged via S3, with the result that a single-ended
analog input is switched to a differential voltage centered about VREFH - VREFH / 2. The switches switch
on every cycle of the ADC clock (open one-half ADC clock, closed one-half ADC clock). Note that there
are additional capacitances associated with the analog input pad, routing, etc., but these do not filter into
the S/H output voltage, as S1 provides isolation during the charge-sharing phase.
One aspect of this circuit is that there is an on-going input current, which is a function of the analog input
voltage, VREF and the ADC clock frequency.
相關PDF資料
PDF描述
73S1215F-68IM/F/P IC SMART CARD READER PROG 68-QFN
73S1215F-44IMR/F/P IC SMART CARD READER PROG 44-QFN
73S1215F-44IM/F/P IC SMART CARD READER PROG 44-QFN
73S1210F-68IM/F/P IC SMART CARD READER PROG 68-QFN
73S1210F-44IMR/F/P IC SMART CARD READER PROG 44-QFN
相關代理商/技術參數
參數描述
MC56F8346 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers
MC56F8346EVM 制造商:Freescale Semiconductor 功能描述:Tools Development kit Kit Contents:Inst
MC56F8346MFV60 功能描述:數字信號處理器和控制器 - DSP, DSC 60MHz 60MIPS RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
MC56F8346MFVE 功能描述:數字信號處理器和控制器 - DSP, DSC 16 BIT HYBRID CONTROLLER RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
MC56F8346VFV60 功能描述:數字信號處理器和控制器 - DSP, DSC 60MHz 60MIPS RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT