Remote-processing RPC-52 Manuel d'utilisateur télécharger pdf (Page 26)

DISPLAY PORT CHAPTER 8

Page 24

J6 8255 Function

Pin Port/line

1 Logic + 5V

2 Digital ground

3 A/4 D4

4 Contrast voltage

5 A/6 D6

6 A/5 D5

7 B/4 Reset (Open collector invertor)

8 B/3 Write

9 B/2 Read

10 A/7 D7

11 A/1 D1

12 A/0 D0

13 A/3 D3

14 A/2 D2

15 B/7 CS (Open collector invertor)

16 B/6 Com mand/ data

17 B/5 Halt

18 Contrast adjust

19 Alternate power

20 Power gr ound

J6 is available for additional I/O if a display

is not used. Port A may be configured as an input or

output. Port B must be configured as an output if a 17

key or larger keypad is used. Use the LINE B command

to access this par t.

Pins 18, 19, and 20 are for the LCD -5003 and other

graphic displays.

COMMANDS

The following RPBASIC-52 com mands are used for the

display.

Command Function

CONFIG DISPLAY Specifies the display type

to use

DISPLAY Prints the string at the

row and collum specified

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 35 36

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Remote-processing RPC-52 Manuel d'utilisateur Page 26