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7721 Datasheet(PDF) 458 Page - Renesas Technology Corp |
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7721 Datasheet(HTML) 458 Page - Renesas Technology Corp |
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458 / 577 page  APPLICATION 7721 Group User’s Manual 16–55 16.2 Examples of using DMA controller b7 b0 DMA3 enabled 1 b7 b0 1 b7 b0 DMA3 request bit : “0” 0 Digit switch interval b15 b0 b8 b7 b7 b0 Port P6 register (Address E16) Output : L level (Lights go out.) 00 00 0000 b7 b0 00 00 000 0 b7 b0 Output mode 11 1 1 111 1 b7 b0 11 1 1 111 1 b7 b0 Timer mode Count source 00 b7 b0 Interrupt disabled 000 Port P7 register (Address F16) Output : L level (All digits OFF) Port P6 direction register (Address 1016) Port P7 direction register (Address 1116) Output mode Timer B0 register (Addresses 5116, 5016) !! ! Timer B0 mode register (Address 5B16) Timer B0 interrupt control register (Address 7A16) Count start register (Address 4016) Timer B0 count started DMAC control register L (Address 6816) DMAC control register H (Address 6916) ! : It may be “0” or “1.” Fig. 16.2.13 Initial setting example for relevant register (2) |
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