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7721 Datasheet(PDF) 260 Page - Renesas Technology Corp |
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7721 Datasheet(HTML) 260 Page - Renesas Technology Corp |
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260 / 577 page  A-D CONVERTER 7721 Group User’s Manual 12–9 12.2.5 Port P7 direction register Input pins of the A-D converter are multiplexed with port P7. When using these pins as A-D converter’s input pins, set the corresponding bits of the port P7 direction register to “0” to set these port pins for the input mode. Figure 12.2.6 shows the relationship between the port P7 direction register and A-D converter’s input pins. 12.2 Block description Fig. 12.2.6 Relationship between port P7 direction register and A-D converter’s input pins Bit Corresponding pin Functions 0 1 2 3 4 5 6 7 AN0 pin 0 : Input mode 1 : Output mode When using these pins as A-D converter’s input pins, set the corresponding bits to “0.” Port P7 direction register (Address 1116) b1 b0 b2 b3 b4 b5 b6 b7 At reset RW 0 0 0 0 0 0 0 0 RW RW RW RW RW RW RW RW AN1 pin AN2 pin AN3 pin AN4 pin AN5 pin AN6 pin AN7/ADTRG pin |
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