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7477 Datasheet(PDF) 60 Page - Renesas Technology Corp |
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7477 Datasheet(HTML) 60 Page - Renesas Technology Corp |
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60 / 354 page  7470/7471/7477/7478 GROUP USER’S MANUAL HARDWARE 1.10 I/O pins 1-43 Tr11 (7470/7471 group) Tr10 (7477/7478 group) Port P2 Tr10 A-D conversion circuit Tr10 and Tr11 are pull-up transistors Port P4 : Control in units of 4-bit (Control in units of 2-bit for 7470/7477 group) : Control in units of 4-bit Port P2 (7470/7471 group) Port latch Pull-up control register Direction register Port P4 Data bus Data bus Data bus Data bus Port P3 INT0, INT1 CNTR0, CNTR1 Port P3 Data bus Multi- plexer Direction register Port latch Pull-up control register Multi- plexer Port P2 (7477/7478 group) Data bus A-D conversion circuit Port P2 Fig. 1.10.8 Block diagram of Ports P2 to P4 V V V V |
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