Sharp AR-151 Dokumentacja Pobierz pdf (Strona 143)

C. LCD panel pin arrangement

Pin No. Signal name Input/Output Remark

1 LCDRS Input

H: Data input;

L: Instruction input

2 LCDRW Input

H: Data read;

L: Data write

3 LCDE Input Enable signal

4 DB0 Input Not used.

5 DB1 Input Not used

6 DB2 Input Not used

7 DB3 Input Not used

8 LCDB4 Input Data bus line

9 LCDB5 Input Data bus line

10 LCDB6 Input Data bus line

11 LCDB7 Input Data bus line

12 V

–0V

13 V

– +5.2V

14 Vin – +5.2V

15 V5 – LCD drive power

16 GND – Frame GND

D. Key scan input process diagram

LCD display data

process time (B)

Key scan

process

time (A)

Key scan

process

time (A)

Key SW effective period

input

AR-F152

12 – 22

1 2 ... 138 139 140 141 142 143 144 145 146 147 148 ... 169 170

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Sharp AR-151 Dokumentacja Strona 143