lc75864w Sanyo Semiconductor Corporation, lc75864w Datasheet - Page 22

• Manufacturer Part Number: lc75864w
• Description: 1/4 Duty Lcd Display Drivers With Key Input Function
• Manufacturer: Sanyo Semiconductor Corporation

Sample Application Circuit 3
Note: *8.Add a capacitor to the logic block power supply line so that the logic block power supply voltage V
1/3 bias (for use with normal panels)
*9.The DO pin, being an open-drain output, requires a pull-up resistor. Select a resistance (between 1 to 10 k ) appropriate for the capacitance of the
From the
controller
To the controller
To the controller
power supply
block power supply voltage V
external wiring so that signal waveforms are not degraded.
C
+5.5V
0.047 F
+5V
*9
C
DD
fall time when power drops are both at least 1 ms, as the LC75864E/W is reset by the VDET.
*8
C
V
V
TEST
V
V
V
CE
CL
DI
DO
DD
SS
LCD
LCD
LCD
1
2
K
5
I
LC75864E, 75864W
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
4
2
/
S
K
S
2
3
1
/
COM1
COM2
COM3
COM4
P1/S1
P2/S2
P3/S3
P4/S4
S22
Key matrix
(up to 30 keys)
S5
DD
rise time when power is applied and the logic
(S23)
(S24)
(P1)
(P2)
(P3)
(P4)
(general-purpose
output ports)
Used with the
backlight controller
or other circuit.
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