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F224d Faria, Rubens Alexandre de Desenvolvimento de ... - UTFPR

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Pin Connections<br />

PIN NO. I SYMBOL I<br />

FG<br />

2 V5is<br />

Fr itrrie g•our d<br />

OV<br />

FUNCTION<br />

DATA CONNECTOR<br />

Grouna<br />

3 V:3 5V cower supply for logic<br />

4 V, -12.810 Opera ling ',forage for LC<br />

WR L Dcea mile<br />

RD L Galia rear<br />

CL L Chip enable<br />

B CD i-i Cornrnard, L Dula<br />

9 Ni1C No connect an<br />

RESET<br />

DBO<br />

DB1<br />

052<br />

DB3<br />

DBE<br />

DB5<br />

Ht<br />

056 Hrr<br />

"...a<br />

Las<br />

18 DB/<br />

. 9<br />

Is Ht Cc:Ai:111r select<br />

20 RV Di ploy reverse<br />

113<br />

Figura VIII - Pinagem referente ao modulo display HANTRONIX HDM 128GS24Y-1 (adaptada<br />

<strong>de</strong> HANTRONIX INC., 1999)<br />

Obs. 0 backlight CCFL é urn tipo <strong>de</strong> lampada fluorescente <strong>de</strong> dimensoes fisicas reduzidas.<br />

Para aciona-la ha necessida<strong>de</strong> <strong>de</strong> uma tensao entre 900 e 1500Volts, proporcionada por urn<br />

inversor CC-CA.<br />

DIAGRAMA DE TEMPO DO DISPLAY HDM 128GS24<br />

Para confeccionar o software,<br />

<strong>de</strong>ve ser seguido o diagrama <strong>de</strong> tempo da Figura V.III.<br />

C/D<br />

tCDS<br />

..__AC D H<br />

CE<br />

RD WR<br />

tCE, tRD, tWR<br />

1<br />

tDS<br />

DO — D7<br />

(Write)<br />

tDH<br />

DO —07<br />

(Read)<br />

ea- tAC C<br />

tOH<br />

Figura VILII - Diagrama <strong>de</strong> tempo para comunicacao do microcontrolador AT89C52 corn o<br />

display grafico HDM 128GS24 (adaptada <strong>de</strong> HANTRONIX INC., 1999).

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