LC75804 Datasheet

  • LC75804

  • Sanyo Semicon Device [1/3, 1/4 Duty LCD Display Drivers wit...

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  • SANYO

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LC75804E, LC75804W
Sample Application Circuit 5
1/4 duty, 1/2 bias (for use with normal panels)
(P1)
(P2)
(P8)
+5V
*9
VSS
TEST
+5.5V
VLCD
VLCD1
C
鈮?/div>
0.047 碌F
(general-purpose output ports)
Used with the backlight
controller or other circuit.
VDD
OSC
VLCD2
C
RES
*10
CE
CL
KKKKK
DI
DO I I I I I
54321
*11
P8/S8
S9
From the controller
To the controller
To the controller
power supply
S S S73
77
65
/ /
KKKKKK
SSSSSS
654321
(S75)
(S76)
Key matrix
(up to 30 keys)
Notes:*9. Add a capacitor to the logic block power supply line so that the logic block power supply voltage V
DD
rise time when power is applied and the logic
block power supply voltage V
DD
fall time when power drops are both at least 1 ms, as the LC75804E/W is reset by the VDET.
*10.
If the RES pin is not used for system reset, it must be connected to the logic block power supply V
DD
.
*11.
The DO pin, being an open-drain output, requires a pull-up resistor. Select a resistance (between 1 to 10 k鈩? appropriate for the capacitance of
the external wiring so that signal waveforms are not degraded.
LCD panel (up to 300 segments)
COM1
COM2
COM3
S74/COM4
P1/S1
P2/S2
No. 6266-31/37

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