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FUJITSU Semiconductor Controller MB89950/950A User Manual

Page 267

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CHAPTER 12 LCD CONTROLLER/DRIVER

LCD panel connections and display data example (1/2 duty ratio drive mode)

Figure 12.4-3 Segment/common connections, data states and corresponding display

COM1

COM0

SEG

n+3

SEG

n+2

SEG

n+1

SEG

n

*

7

*

0

*

5

*

4

*

2

*

6

*

1

*

3

SEG0

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

COM3

––

––

––

––

––

––

––

––

––

––

––

––

COM2

––

––

––

––

––

––

––

––

––

––

––

––

COM1

0

1

1

1

0

0

1

1

1

1

0

1

COM0

1

1

1

1

0

0

1

0

0

1

1

1

064

H

065

H

066

H

067

H

068

H

069

H

LCD Panel

Display RAM

Address

Segment No.

*0 to *7: I

ndicate corresponding display RAM bits. (Bits 2, 3, 6, and

7 are not used.)

Address

COM3

COM2

COM1

COM0

nH

bit3

bit2

bit1

*1

bit0

*0

SEGn

bit7

bit6

bit5

*3

bit4

*2

SEGn+1

n+1H

bit3

bit2

bit1

*5

bit0

*4

SEGn+2

bit7

bit6

bit5

*7

bit4

*6

SEGn+3

0: OFF
1: ON

Address

COM3

COM2

COM1

COM0

064H

1

1

SEG0

1

0

SEG1

065H

1

0

SEG2

0

1

SEG3

LCD

Display

Bit States for Numerals "0" through "9"

bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0

1

1

0

1

1

1

1

1

0

0

0

0

1

0

1

1

1

1

1

0

1

1

0

1

1

1

1

0

1

1

1

1

0

0

1

1

1

0

1

1

1

0

1

1

0

1

1

1

1

1

1

1

0

1

1

1

0

0

0

1

1

1

1

1

1

1

1

1

1

1

1

1

1

0

1

1

1

1

1

1

Example) Using segments to represent "5".