ra8816 RAIO Technology Inc., ra8816 Datasheet - Page 23

• Manufacturer Part Number: ra8816
• Description: 144x65 Character/graphic Lcd Driver
• Manufacturer: RAIO Technology Inc.

Preliminary Version 1.6
RAiO TECHNOLOGY INC.
[14h] I/O Direction Control Register (IODR)
[15h] I/O Data Register (IODAR)
[16h] EL Control Register (ELCR)
OE[7..0]: Select the I/O port direction. 0
IO[7..0]: This register stores the input data of I/O port when I/O port is input mode.
EL_EN: EL signals output . 0
ELT[3..0]: Setup the output time of EL signals. The following table is base on the RC oscillator fix at 45KHz.
RW
RW
RW
0
0
0
EL_EN
The output time is longer when RC oscillator clock is slower.
IOD7
OE7
DB7
DB7
DB7
IOD6
ELT3
OE6
DB6
DB6
DB6
--
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
ELT2
Off. 1
IOD5
OE5
DB5
DB5
DB5
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
--
ELT1
On.
Input. 1
IOD4
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
DB4
OE4
DB4
DB4
--
Table 5-19
23/68
ELT0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
ELT3
IOD3
DB3
OE3
DB3
DB3
Output.
Output Time(Sec)
IOD2
ELT2
DB2
OE2
DB2
DB2
144x65 Character/Graphic LCD Driver
18.
10
12
14
16
20
22
24
26
28
30
1
2
4
6
8
IOD1
ELT1
DB1
OE1
DB1
DB1
IOD0
ELT0
www.raio.com.tw
OE0
DB0
DB0
DB0
RA8816