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HD64F36049 Datasheet(PDF) 177 Page - Renesas Technology Corp |
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HD64F36049 Datasheet(HTML) 177 Page - Renesas Technology Corp |
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177 / 562 page  Section 9 I/O Ports Rev. 3.00 Mar. 15, 2006 Page 145 of 526 REJ09B0060-0300 9.9 Port B Port B is an input port also functioning as an A/D converter analog input pin. Each pin of the port B is shown in figure 9.9. PB5/AN5 PB6/AN6 PB7/AN7 PB0/AN0 PB4/AN4 PB3/AN3 PB2/AN2 PB1/AN1 Port B Figure 9.9 Port B Pin Configuration Port B has the following register. • Port data register B (PDRB) 9.9.1 Port Data Register B (PDRB) PDRB is a general input-only port data register of port B. Bit Bit Name Initial Value R/W Description 7 6 5 4 3 2 1 0 PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0 R R R R R R R R The input value of each pin is read by reading this register. However, if a port B pin is designated as an analog input channel by ADCSR of A/D converter, 0 is read. |
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