S6B0716 데이터 시트보기 (PDF) - Samsung

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S6B0716

33 COM / 100 SEG DRIVER & CONTROLLER FOR STN LCD

Samsung 

S6B0716

33COM/100SEG DRIVER & CONTROLLER FOR STN LCD

Column Address Circuit

Column Address circuit has a 8-bit preset counter that provides Column Address to the Display Data RAM as shown

in figure 8. When set Column Address MSB / LSB instruction is issued, 8-bit [Y7:Y0] is updated. And, since this

address is increased by 1 each a read or write data instruction, microprocessor can access the display data

continuously. However, the counter is not increased and locked if a non-existing address above 84H. It is unlocked

if a Column Address is set again by set Column Address MSB / LSB instruction. And the Column Address counter is

independent of page address register.

ADC Select instruction makes it possible to invert the relationship between the column address and the segment

outputs. It is necessary to rewrite the display data on built-in RAM after issuing ADC Select instruction. Refer to the

following figure 7.

SEG output

-

Column address [Y7:Y0]

Display data

LCD panel display

( ADC = 0 )

00H~

0FH

×

Not

outputted

SEG

0

10H

1

SEG

1

01H

0

SEG

2

02H

0

... ...

... ...

... ...

SEG

97

71H

0

SEG

98

72H

1

SEG

99

73H

1

-

74H~

83H

0

Not

outputted

LCD panel display

( ADC = 1 )

Not

outputted

... ...

Figure 7. The Relationship between the Column Address and the Segment Outputs

Not

outputted

Segment Control Circuit

This circuit controls the display data by the display ON / OFF, reverse display ON / OFF and entire display ON / OFF

instructions without changing the data in the display data RAM.

17

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