7477 datasheet(296/354 Pages) RENESAS

296 / 354 page

7470/7471/7477/7478 GROUP USER’S MANUAL

3-2

APPENDIX

3.1 Control registers

Fig. 3.1.1 Structure of Port Pi direction register (i=0, 1, 2, 4)

Fig. 3.1.2 Structure of Port P0 pull-up control register

At reset

Port Pi direction register (PiD) (i = 0,1,2,4)

[Address 00C116, 00C316, 00C516, 00C916]

Port Pi direction register

Port Pi direction

0 : Port Pi0 input mode

1 : Port Pi0 output mode

0 : Port Pi1 input mode

1 : Port Pi1 output mode

0 : Port Pi2 input mode

1 : Port Pi2 output mode

0 : Port Pi3 input mode

1 : Port Pi3 output mode

0 : Port Pi4 input mode

1 : Port Pi4 output mode

0 : Port Pi5 input mode

1 : Port Pi5 output mode

0 : Port Pi6 input mode

1 : Port Pi6 output mode

0 : Port Pi7 input mode

1 : Port Pi7 output mode

Name

Function

Notes 1:

The 7477/7478 group is not provided with the port P2

direction register (input only).

The Port P4 is provided as below:

•7470/7477 group has 2 bits of P4 0 and P41

•7471/7478 group has 4 bits of P4 0 to P43.

b7 b6 b5 b4 b3 b2 b1 b0

Name

Function

At reset RW

Port P0 pull-up control register

Port P00 pull-up

control bit

Port P01 pull-up

control bit

Port P02 pull-up

control bit

Port P03 pull-up

control bit

Port P04 pull-up

control bit

Port P05 pull-up

control bit

Port P06 pull-up

control bit

Port P07 pull-up

control bit

0 : No pull-up

1 : Pull-up

0 : No pull-up

1 : Pull-up

0 : No pull-up

1 : Pull-up

0 : No pull-up

1 : Pull-up

0 : No pull-up

1 : Pull-up

0 : No pull-up

1 : Pull-up

0 : No pull-up

1 : Pull-up

0 : No pull-up

1 : Pull-up

[Address 00D016]

7477 Datasheet(PDF) 296 Page - Renesas Technology Corp

7477 Datasheet(HTML) 296 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL