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7477 Datasheet(PDF) 239 Page - Renesas Technology Corp |
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7477 Datasheet(HTML) 239 Page - Renesas Technology Corp |
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239 / 354 page  7470/7471/7477/7478 GROUP USER’S MANUAL 2-4 APPLICATION 2.1 I/O pins 7470 7471 7477 7478 (3) Pull-up control register The ports shown in Table 2.1.3 can be pulled up by software. A pull-up operation can be performed by the P0 pull-up control register (address 00D016) and P1-P5 pull-up control register (address 00D116). Table 2.1.3 I/O ports that permit pull-up by software Register Device 7470 group 7471 group 7477 group 7478 group Port P0 pull-up control register Control by 1-bit unit P0 P0 P0 P0 * : In the 7470/7477 group, the P1-P4 pull-up control register is arranged. Note: In the 7470 group, P2 is 4 bits of b0 - b3 and P4 is 2 bits of b0 and b4. In the 7477 group, P4 is 2 bits of b0 and b1. In the 7471/7478 group, P5 is 4 bits of b0 - b3. Port P1-P5 pull-up control register* Control by 4-bit unit P1, P2, P4 P1, P2, P4, P5 P1, P4 P1, P4, P5 ,,,, |
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