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7480 Datasheet(PDF) 45 Page - Renesas Technology Corp |
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7480 Datasheet(HTML) 45 Page - Renesas Technology Corp |
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45 / 337 page  7480 Group and 7481 Group User's Manual 1-28 HARDWARE 1.10 Input/Output Pins Figure 1.10.2 Block Diagram of Port Pins P14–P17 Serial I/O enable bit Data bus Port P17 pin TxD RxD SCLK output Port latch Direction register SRDY Tr6 Port P16 pin Tr7 SCLK input Port P15 pin Tr8 Port P14 pin Tr9 Pull-up control register Tr6 to Tr9: Pull-up transistor q Ports P14–P17 Serial I/O mode selection bit SRDY output enable bit Data bus Data bus Data bus Data bus Port latch Direction register Port latch Direction register Port latch Direction register Serial I/O enable bit Serial I/O mode selection bit Serial I/O synchronous clock selection bit Serial I/O enable bit Serial I/O enable bit Transmit enable bit Serial I/O enable bit Receive enable bit |
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