Remote-processing RPC-330 Manual do Utilizador descarregar pdf (Página 32)

DISPLAY PORT SECTION 8

Page 8-2 RPC-330

DISPLAY CONNECTOR PIN OUT

The display port uses an 82C5 5 for data and control.

The table below lists a pin number and its intended

function. A display may not use all lines even though

they are available.

J4 8255 Function

Pin Port/line to display

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 (from 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 (from invertor)

16 B/6 Com mand/ data

17 B/5 Halt

18 Contrast adjust

19 Alternate power

20 Power ground

J4 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. These lines go to P5.

COMMANDS

The following RPBASIC-52 com mands are used for the

display.

Command Function

CLEAR DISPLAY Clears entire display

CLEAR DISPLAY LINE Clears current line

CONFIG DISPLAY Specifies display type to

use

DISPLAY Prints the string at the

row and collum specified

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 47 48

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