lc75863e Sanyo Semiconductor Corporation, lc75863e Datasheet - Page 20

• Manufacturer Part Number: lc75863e
• Description: 1/3 Duty Lcd Display Drivers With Key Input Function
• Manufacturer: Sanyo Semiconductor Corporation

Sample Application Circuit 3
1/3 bias (for use with normal panels)
Note: *8. Add a capacitor to the logic block power supply line so that the logic block power supply voltage V
From the
controller
To the controller
To the controller
power supply
*9. The DO pin, being an open-drain output, requires a pull-up resistor. Select a resistance (between 1 to 10 kΩ) appropriate for the capacitance of
logic block power supply voltage V
the external wiring so that signal waveforms are not degraded.
C
+5.5 V
+5 V
0.047 F
*9
C
*8
C
DD
fall time when power drops are both at least 1 ms, as the LC75863E/W is reset by the VDET.
VDD
VSS
TEST
VLCD
VLCD1
VLCD2
CE
CL
DI
DO
LC75863E, 75863W
K
5
I
K
4
I
K
3
I
OSC
K
2
I
K
1
I
K
S
6
K
S
5
K
S
4
K
S
3
S
K
S
2
5
2
/
S
K
S
2
4
1
/
COM1
COM2
COM3
P1/S1
P2/S2
P3/S3
P4/S4
Key matrix
(up to 30 keys)
S23
S5
DD
rise time when power is applied and the
(S24)
(S25)
(P1)
(P2)
(P3)
(P4)
(general-purpose
output ports)
Used with the
backlight controller
or other circuit.
No. 7135-20/24