7721 datasheet(473/577 Pages) RENESAS

473 / 577 page

APPENDIX

Appendix 3. Control registers

7721 Group User’s Manual

17–10

Port Pi register

Bit

Bit name

Functions

Port Pi0’s pin

Port Pi2’s pin

Port Pi3’s pin

Port Pi4’s pin

Port Pi6’s pin

Data is input from or output to a pin

by reading from or writing to the

corresponding bit.

Port Pi5’s pin

Port Pi register (i = 4 to 10)

(Addresses A16, B16, E16, F16, 1216, 1316, 1616)

Port Pi1’s pin

Port Pi7’s pin

At reset

Undefined

0 : “L” level

1 : “H” level

Note: For bits 0 to 2 of the port P4 register, nothing is assigned and these bits are fixed to “0” at reading.

Port Pi direction register

Bit

Bit name

Functions

Port Pi0 direction bit

Port Pi2 direction bit

Port Pi3 direction bit

Port Pi4 direction bit

Port Pi6 direction bit

0 : Input mode

(The port functions as an input port)

1 : Output mode

(The port functions as an output port)

Port Pi5 direction bit

Port Pi direction register (i = 4 to 10)

(Addresses C16, D16, 1016, 1116, 1416, 1516, 1816)

Port Pi1 direction bit

Port Pi7 direction bit

At reset

Note: For bits 0 to 2 of the port P4 direction register, nothing is assigned and these bits are fixed to “0” at

reading.

7721 Datasheet(PDF) 473 Page - Renesas Technology Corp

7721 Datasheet(HTML) 473 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