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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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UPD17708 Datasheet(PDF) 288 Page - NEC |
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UPD17708 Datasheet(HTML) 288 Page - NEC |
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288 / 356 page  288 µPD17704, 17705, 17707, 17708, 17709 19.2 I/O Selection Block and Output Selection Block The I/O selection block selects the input or output mode of the P1D0/BEEP0 and P1D1/BEEP1 pins by using the port 1D bit I/O selection register. Set the pin to be used as a BEEP pin in the output mode. The output selection block sets the P1D0/BEEP0 and P1D1/BEEP1 pins in the general-purpose output port mode or BEEP output mode by using the BEEP/general-purpose port pin function selection register. Figure 19-2 shows the configuration of the port 1D bit I/O selection register. Figure 19-3 shows the configuration of the BEEP/general-purpose port pin function selection registerion. Figure 19-2. Configuration of Port 1D Bit I/O Selection Register Name Flag symbol b3 P 1 D B I O 3 b2 P 1 D B I O 2 b1 P 1 D B I O 1 b0 P 1 D B I O 0 Address (BANK15) 6CH Read/Write R/W Port 1D bit I/O selection Power-ON reset WDT&SP reset CE reset Clock stop 0 1 0 0 0 0 0 0 0 0 0 1 Sets P1D0/BEEP0 pin in input mode Sets P1D0/BEEP0 pin in output mode. Selects input or output port mode Sets P1D1/BEEP1 pin in input mode Sets P1D1/BEEP1 pin in output mode Selects input or output port mode Sets P1D2 pin in input mode Sets P1D2 pin in output mode Selects input or output port mode Sets P1D3 pin in input mode Sets P1D3 pin in output mode Selects input or output port mode 0 1 0 1 Retained Retained |
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