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H8SX/1663 数据表(PDF) 917 Page - Renesas Technology Corp |
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H8SX/1663 数据表(HTML) 917 Page - Renesas Technology Corp |
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917 / 1158 page  Section 18 A/D Converter Rev.1.00 Jun. 07, 2006 Page 865 of 1102 REJ09B0294-0100 AVCC *1 *1 Vref AN0 to AN7 AVSS Notes: Values are reference values. 1. 2. Rin: Input impedance Rin*2 100 Ω 0.1 µF 0.01 µF 10 µF Figure 18.9 Example of Analog Input Protection Circuit Table 18.6 Analog Pin Specifications Item Min Max Unit Analog input capacitance 20 pF Permissible signal source impedance 5 k Ω 20 pF To A/D converter AN0 to AN7 10 k Ω Note: Values are reference values. Figure 18.10 Analog Input Pin Equivalent Circuit 18.7.7 A/D Input Hold Function in Software Standby Mode When this LSI enters software standby mode with A/D conversion enabled, the analog inputs are retained, and the analog power supply current is equal to as during A/D conversion. If the analog power supply current needs to be reduced in software standby mode, clear the ADST, TRGS1, and TRGS0 bits all to 0 to disable A/D conversion. |
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