bu9768ak ROHM Co. Ltd., bu9768ak Datasheet - Page 7

• Manufacturer Part Number: bu9768ak
• Description: Driver Segmented Module With Input Function
• Manufacturer: ROHM Co. Ltd.

Standard ICs
(1 / 3 bias mode)
The pull-up resistor value should be set to a value so that the waveform is not destroyed by the wiring capacitance
or other factors.
R
R
C
R
C
R
-COM
1
2
2
3
3
4
, C
1
: Constants should be set to match data
: 47k
: 1000pF (fosc = 38kHz)
: The constant should be set to match the panel,
:
: 1k ~ 10k
communications.
through testing or other means.
0.047 F
R
4
(fosc = 38kHz)
C
3
C
3
R
R
R
GND
3
3
3
C
1
Fig. 5
R
C
1
2
V
RST
V
V
CS
CK
DI
DO
DD
DD
DD
KI
R
1
2
1
OSC S
2
Key matrix (30 maximum)
KI
2
1
(EP
KI
1
) · · · · · · · · · · · · S
LCD panel
3
KI
4
BU9768AK / BU9768AKV
COM
COM
COM
KI
KO
KO
KO
KO
KO
KO
5
40
1
2
3
1
2
3
4
5
6
7