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HD6433636SW Datasheet(PDF) 135 Page - Renesas Technology Corp |
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HD6433636SW Datasheet(HTML) 135 Page - Renesas Technology Corp |
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135 / 418 page ![]() 121 Section 8 I/O Ports 8.1 Overview The H8/3637S Series is provided with six 8-bit I/O ports, one 7-bit I/O port, one 4-bit I/O port, one 2-bit I/O port, one 4-bit input-only port, and one 1-bit input-only port. Table 8.1 indicates the functions of each port. Each port has of a port control register (PCR) that controls input and output, and a port data register (PDR) for storing output data. Input or output can be controlled by individual bits. See 2.9.2, Notes on Bit Manipulation, for information on executing bit-manipulation instructions to write data in PCR or PDR. Block diagrams of each port are given in Appendix C, I/O Port Block Diagrams. |
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