HD66108 Datasheet, PDF (16/60 Pages) Hitachi Semiconductor – (RAM-Provided 165-Channel LCD Driver for Liquid Crystal Dot Matrix Graphics)

HD66108
3. Display Data Write
3.1 Display Memory and Data Register Accesses
(1) Access
Figure 6 shows the relationship between the address register (AR) and internal registers and display
memory in the HD66108T. Display memory shall be referred to as a data register since it can be
handled as other registers.
To access a data register, the register address assigned to the desired register must be written into the
address register’s Register No. bits. The MPU will access only that register until the register address is
updated.
Registers accessible with pin RS = 0
Address register
Bit
7
6
5
4
3
2
1
0
Register No.
Registers accessible with pin RS = 1
Data registers
Register No.
=0
Display
memory
=1
X address
register
=2
Y address
register
=3
Control
register
=4
Mode
register
=5
C select
register
Figure 6 Relationship between Address Register and Register No.
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