S6B0755 Datasheet, PDF (38/68 Pages) Samsung semiconductor – 128 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD

S6B0755
PRELIMINARY SPEC. VER. 1.0
128 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD
Read Display Data
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 incremented by 1 automatically after each this instruction, the
microprocessor can 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.
RS
RW
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
1
1
Read data
Write Display Data
8-bit data of display data from the microprocessor can be written to the RAM location specified by the column
address and page address. The column address is incremented by 1 automatically so that the
microprocessor can continuously write data to the addressed page. During auto-increment, the column
address wraps to 0 after the last column is written.
RS
RW
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
1
0
Write data
Set Page Address
Set Column Address
Data Write
Column = Column +1
Yes
Data Write Continue ?
No
Optional Status
Set Page Address
Set Column Address
Dummy Data Read
Column = Column +1
Data Read
Column = Column +1
Yes
Data Read Continue ?
No
Optional Status
Figure 26. Sequence for Writing Display Data Figure 27. Sequence for Reading Display Data
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