EM62100AGH datasheet(25/60 Pages) EMC

25 / 60 page

EM62100

65 COM/132 SEG STN LCD Driver

Product Specification (V1.1) 09.13.2005

•••• 19

(This specification is subject to change without further notice)

6.11 Common Control (Shift Register)

6.11.1 Common Number

This circuit controls the relationship between the number of common output and

specified duty ratio. Common output mode select instruction specifies the scanning

direction of the common output pads, as shown in Table 8.

Table 8

Common Output Pads

Duty

Status

COM

[0:15]

COM

[16:23]

COM

[24:26]

COM

[27:36]

COM

[37:39]

COM

[40:47]

COM

[48:63]

COMS

Normal

COM[0:15]

COM[16:31] COMS

1/33

Reverse

COM[31:16]

COM[15:0] COMS

Normal

COM[0:23]

COM[24:47]

COMS

1/49

Reverse

COM[47:24]

COM[23:0]

COMS

Normal

COM[0:26]

COM[27:53]

COMS

1/55

Reverse

COM[53:27]

COM[26:0]

COMS

Normal

COM[0:63]

COMS

1/65

Reverse

COM[63:0]

COMS

6.11.2 LCD Driver Circuits

There are 197 channel drivers that generate four voltage levels for driving the liquid

crystal. The combination of the display data, the COM scan signal, and the M signal

produces the liquid crystal drive voltage output. Figure 7 shows examples of the SEG

and COM output waveform.

COM0

COM1

COM2

COM3

COM4

COM5

COM6

COM7

COM0

COM1

SEG0

COM63

Fig. 7

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