參數(shù)資料
型號: SAB80C517A-N18-T3
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 8-BIT, 18 MHz, MICROCONTROLLER, PQCC84
封裝: PLASTIC, LCC-84
文件頁數(shù): 75/137頁
文件大?。?/td> 2089K
代理商: SAB80C517A-N18-T3
Semiconductor Group
5 - 7
On-Chip Peripheral Components
A/D Converter Timing
After a conversion has been started (by a write to ADDATL, external start by P6.0/ADST or in
continous mode) the analog input voltage is sampled for 4 clock cycles. The analog source must be
capable of charging the capacitor network of appr. 50 pF to full accuracy in this time. During this
period the converter is susceptable to spikes and noise at the analog input, which may cause wrong
codes at the digital outputs. Therefore RC-filtering at the analog inputs is recommended (see figure
5-2 below).
Conversion of the sampled analog voltage takes place between the 4th an 14th clock cycle.
Figure 5-2
Recommended RC-filtering at the Analog Inputs
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