ST7528 Sitronix, ST7528 Datasheet - Page 50

• Manufacturer Part Number: ST7528
• Description: 16 Gray Scale Dot Matrix LCD Controller
• Manufacturer: Sitronix

ST7528
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 increased 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.
A0
1
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 increased 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.
A0
1
Ver2.3
Figure 18 Sequence for Writing Display Data (Left) and Sequence for Reading Display Data (Right)
RW
1
RW
1
Column = Column + 1
Data Write Continue ?
Set Column Address
Set Page Address
DB7
DB7
Optional Status
Data Write
NO
DB6
DB6
DB5
DB5
YES
50/97
DB4
DB4
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Read data
Write data
DB3
DB3
Column = Column + 1
Column = Column + 1
Data Read Continue ?
Set Column Address
Dummy Data Read
Set Page Address
Optional Status
Data Read
DB2
DB2
NO
DB1
DB1
YES
2007/1/3
DB0
DB0
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