SL20T0081 System Logic Semiconductor, SL20T0081 Datasheet - Page 18

• Manufacturer Part Number: SL20T0081
• Description: SLS System Logic Semiconductor
• Manufacturer: System Logic Semiconductor

SLS System Logic Semiconductor
Column Address Circuit
figure 7. When Set Column Address MSB/LSB instruction is issued, 8-bit [Y7:Y0] is updated. And, since this address
is increased by 1 each 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.
outputs.It is necessary to rewrite the display data on built-in RAM after issuing ADC select instruction. Refer to the
following figure 7.
Figure 7. The Relationship between Column Address and Segment output
Segment Control Circuit
instructions without changing the data in display data RAM.
Column Address circuit has an 8-bit preset counter that provides column address to the Display Data RAM as show in
ADC Select instruction makes it possible to invert the relationship between the Column Address and the segment
This circuit controls the display data by the display ON/OFF, reverse display ON/OFF and entire display ON/OFF
Column Address
Display Data
SEG Output
LCD panel
ADC = 0
ADC = 1
SEG
00H
0
1
SEG
01H
1
0
SEG
02H
2
1
SEG
03H
3
1
SEG
04H
4
0
SEG
7FH
127
1
SEG
80H
128
0
SEG
81H
129
0
SEG
82H
130
SL20T0081
1
SEG
83H
131
0