RA8808
Preliminary Version 1.0
128x64Driver for Dot Matrix LCD
RW
I
In Parallel Mode :
Read-Write Control or Write Control
When use 6800 series interface, this pin is used as data read/write control.
Active high for read and active low for write.
When use 8080 series interface, this pin is used as data write, active low.
In Serial Mode :
This pin is not used and must be connected to low.
In Parallel Mode :
Data or Instruction
RS = H
DB0~DB7 : Display RAM data
RS = L
DB0~DB7 : Instruction data
In Serial Mode :
This pin is not used and must be connected to low.
In Parallel Mode :
Chip selection for left side (Note 1)
In order to interface left side data for input or output, the terminals have to be
CS1 = H, CS2B = L.
In Serial Mode :
These pins are not used and must be connected to high or low.
In Parallel Mode :
Chip selection for right side (Note 1)
In order to interface right side data for input or output, the terminals have to
be
CS3 = H, CS4B = L.
In Serial Mode :
These pins are not used and must be connected to to high or low.
Reset Signal
When RSTB = L,
_ON/OFF register becomes set by 0. (display off)
_Display start line register becomes set by 0.(Z-address 0 set, display from
line 0)
After releasing reset, this condition can be changed only by instruction.
Parallel/Serial MPU Interface Selection
RS
I
CS1
CS2B
I
CS3
CS4B
I
RSTB
I
PS
I
PS
H
L
Parallel/Serial
Parallel
Serial
MPU Interface Selection(Combine with PS)
PS
H
H
L
L
MODE
H
L
H
L
MPU Interface
6800 series
8080 series
3-wire SPI
IIC
MODE
I
RAiO
TECHNOLOGY INC.
4/7
www.raio.com.tw
RAIO [ RAIO TECHNOLOGY INC. ]
