SL20T0081 System Logic Semiconductor, SL20T0081 Datasheet - Page 34

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

SLS System Logic Semiconductor
Write Display Data
and page address. The column address is increased by 1 automatically so that the microprocessor can continuously
write data to the addressed page.
Read Display Data
continuously read data from the addressed page. A dummy read is required after loading an address into the column
address register. Display data cannot be read through the serial interface.
ADC Select (Segment Driver Direction Select)
pins can be reversed by software. This makes IC layout flexible in LCD module assembly.
8-bit data of display data from the microprocessor can be written to the RAM location specified by the column address
8-bit data from display data RAM specified by the column address and page address can be read by this Instruction.
As the column address is increased by 1 automatically after each this instruction, the microprocessor can
Changes the relationship between RAM column address and segment driver. The direction of segment driver output
Column address is increased automatically
after Read or Write operation.
ADC = 0: normal direction (SEG0
ADC = 1: reverse direction (SEG131 SEG0)
Figure 12. Sequence for Writing Display Data
RS
RS
RS
1
1
0
YES
RW
RW
RW
0
1
0
Data Read Continue?
Set Column Address
Set Page Address
Optional Status
Data Write
D7
D7
D7
1
NO
SEG131)
D6
D6
D6
0
D5
D5
D5
1
Figure 13. Sequence for Reading Display Data
D4
D4
D4
0
Read data
Write data
Data Read Continue?
D3
D3
D3
Set Column Address
Dummy Data Read
0
Set Page Address
Optional Status
Data Read
D2
D2
D2
NO
0
SL20T0081
D1
D1
D1
0
YES
ADC
D0
D0
D0