UPD17062 datasheet(196/298 Pages) RENESAS

196 / 298 page

194

µPD17062

15.3

GENERAL-PURPOSE I/O PORTS (P0A, P0B, P1B, P1C)

15.3.1

Configuration of I/O Ports

In the following, (1) to (3) explain the configuration of the I/O ports.

(1) P0A (P0A3, P0A2 pins)

P0B (P0B3, P0B2, P0B1, P0B0 pins)

P1B (P1B3, P1B2, P1B1, P1B0 pins)

P1C (P1C3, P1C2, P1C1 pins)

(2) P0A (P0A1, P0A0 pins)

15.3.2

How to Use I/O Ports

An I/O port is set as an input or output port according to the contents of each I/O selection register of P0A,

P0B, P1B, and P1C of the control register.

I/O of the bit I/O port (P0A, P0B, P1B) can be set in 1-bit (1-pin) units. I/O of the group I/O port (P0C) can

be set in 3-bit (3-pin) units.

Output data is set and input data is read when a data write instruction or data read instruction is executed

in the corresponding port register.

Section 15.3.3 describes the I/O selection register of each port.

Sections 15.3.4 and 15.3.5 explain the use of an input port and output port.

VDD

AND

I/O switching flag

Output

latch

Write

instruction

Port register

(1 bit)

Read

instruction

RESET (except P1C)

Read instruction (P1C only)

VDD

AND

RESET

I/O switching flag

Output

latch

Write

instruction

Port register

(1 bit)

Read

instruction

UPD17062 Datasheet(PDF) 196 Page - Renesas Technology Corp

UPD17062 Datasheet(HTML) 196 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