LC75804W 查看數據表（PDF） - SANYO -> Panasonic
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LC75804W Datasheet PDF : 37 Pages
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LC75804E, LC75804W
Sample Application Circuit 8
1/4 duty, 1/3 bias (for use with large panels)
+5V
*9
10 kΩ ≥ R ≥ 1 kΩ
C ≥ 0.047 µF
+5.5V
R
R
CC R
VDD
VSS
TEST
VLCD
VLCD1
VLCD2
OSC
COM1
COM2
COM3
S74/COM4
P1/S1
P2/S2
P8/S8
S9
From the controller
To the controller
To the controller
power supply
*11
RES *10
CE
CL
DI K K K K K
DO
IIIII
54321
S S S73
77
65
//
KKKKKK
SSSSSS
654321
(P1)
(P2)
(P8)
(general-purpose output ports)
Used with the backlight
controller or other circuit.
(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 VDD rise time when power is applied and the logic
block power supply voltage VDD 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 VDD.
*11. 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
the external wiring so that signal waveforms are not degraded.
Notes on transferring display data from the controller
When using the LC75804E/W in 1/3 duty, applications transfer the display data (D1 to D228) in three operations, and in
1/4 duty, they transfer the display data (D1 to D300) in four operations. In either case, applications should transfer all of
the display data within 30 ms to maintain the quality of the displayed image.
No. 6266-34/37
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