lc75804e Sanyo Semiconductor Corporation, lc75804e Datasheet - Page 31

• Manufacturer Part Number: lc75804e
• Description: 1/3, 1/4 Duty Lcd Display Drivers With Key Input Function
• Manufacturer: Sanyo Semiconductor Corporation

From the controller
Sample Application Circuit 5
1/4 duty, 1/2 bias (for use with normal panels)
Notes:*9. Add a capacitor to the logic block power supply line so that the logic block power supply voltage V
To the controller
To the controller
power supply
*10. If the RES pin is not used for system reset, it must be connected to the logic block power supply V
*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
block power supply voltage V
the external wiring so that signal waveforms are not degraded.
+5.5V
+5V
C ≥ 0.047 µF
*11
DD
*9
C
fall time when power drops are both at least 1 ms, as the LC75804E/W is reset by the VDET.
VDD
VSS
TEST
VLCD
VLCD1
VLCD2
RES
CE
CL
DI
DO
*10
LC75804E, LC75804W
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
S74/COM4
S
3
K
S
7
6
/
S
2
K
S
7
5
/
S
1
COM1
COM2
COM3
P1/S1
P2/S2
P8/S8
S73
Key matrix
(up to 30 keys)
S9
DD
DD
.
rise time when power is applied and the logic
(S75)
(S76)
(P1)
(P2)
(P8)
(general-purpose output ports)
Used with the backlight
controller or other circuit.
No. 6266-31/37