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C161 Datasheet(PDF) 154 Page - Infineon Technologies AG |
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C161 Datasheet(HTML) 154 Page - Infineon Technologies AG |
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154 / 400 page  &3, 3DUDOOHO 3RUWV User’s Manual 7-28 1999-08 Figure 7-17 Port 5 IO and Alternate Functions Port 5 Digital Input Control Port 5 pins may be used for both digital an analog input. By setting the respective bit in register P5DIDIS the digital input stage of the respective Port 5 pin can be disconnected from the pin. This is recommended when the pin is to be used as analog input, as it reduces the current through the digital input stage and prevents it from toggling while the (analog) input level is between the digital low and high thresholds. So the consumed power and the generated noise can be reduced. After reset all digital input stages are enabled. P5DIDIS P5 Dig. Inp. Disable Reg. SFR (FFA4 H/D2H) Reset Value: 0000 H 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 P5D .3 P5D .2 P5D .1 P5D .0 - - - - - - - - rw rw rw rw rw rw rw rw Bit Function P5D.y Port P5 Bit y Digital Input Control 0: Digital input stage connected to port line P5.y 1: Digital input stage disconnected from port line P5.y When being read or used as alternate input this line appears as ’1’. P5.15 P5.14 P5.3 P5.2 P5.1 P5.0 Port 5 AN3 AN2 AN1 AN0 Alternate Function a) General Purpose Input T2EUD T4EUD b) A/D Converter Input Timer Control Input |
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