PEDL9090-02
¡ Semiconductor
ML9090-01,-02
(3) D5 KT (Key scan time) Key scan time select bit
1: 10ms
0: 5ms
This bit selects the key scan cycle time. In the case of a 740kHz oscillating frequency, writing a
“1” to this bit sets the key scan cycle time at 10ms, writing a “0” sets the key scan cycle time at
5ms. Even if the RESET pin is pulled to a “L” level, the value of this bit will not change.
(4) D4 SHL (Common driver shift direction select bit)
This bit selects the shift direction of common drivers.
The relationship between this bit and shift directions are shown below.
Even if the RESET Pin is set to "L", this bit remains unchanged.
Model
SHL
Duty
1/8
Shift direction
COM8
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
COM1
1
1/9
COM9
COM10
COM1
COM1
COM1
COM16
COM17
COM18
COM1
COM1
COM1
COM1
COM1
COM8
COM9
COM10
COM1
COM1
COM1
COM16
COM17
COM18
1/10
1/8
ML9090-01
0
1
0
1/9
1/10
1/16
1/17
1/18
1/16
1/17
1/18
ML9090-02
(5) D1 to D0 DTY (Display duty select bit)
Thisbitselectsthedisplayduty. Thecorrespondencebetweeneachbitanddisplaydutyisshown
in the chart below. Even if the RESET pin is pulled to a “L” Level, the values of these bits will not
change.
Model
Code
DTY1
DTY0
Display duty
1/8
0
1
2
3
0
1
2
3
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1/9
ML9090-01
1/10
1/10
1/16
1/17
ML9090-02
1/18
1/18
23/38
OKI [ OKI ELECTRONIC COMPONETS ]
