Renesas PCA4738F-80A Manuel d'utilisateur télécharger pdf (Page 32)

31

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

38C3 Group

Internal

signal

LCDCK

timing

1/4 duty Voltage level

V

L3

V

L2

=V

L1

V

SS

V

L3

V

SS

COM

0

COM

1

COM

2

COM

3

SEG

0

OFF ON OFF ON

COM

3

COM

2

COM

1

COM

0

COM

3

COM

2

COM

1

COM

0

1/3 duty

V

L3

V

L2

=V

L1

V

SS

V

L3

V

SS

OFFON ON OFF ON OFF

1/2 duty

COM

0

COM

1

COM

2

SEG

0

COM

0

COM

1

SEG

0

V

L3

V

L2

=V

L1

V

SS

V

L3

V

SS

OFFON OFFON OFFON OFFON

COM

0

COM

2

COM

1

COM

0

COM

2

COM

1

COM

0

COM

2

COM

1

COM

0

COM

1

COM

0

COM

1

COM

0

COM

1

COM

0

1/1 duty (1/1 bias)

COM

0

SEG

0

V

L3

V

L2

=V

L1

=V

SS

V

L3

V

SS

ONOFF

Fig. 31 LCD drive waveform (1/2 bias)

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 63 64

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