NJU6635 New Japan Radio Co.,Ltd, NJU6635 Datasheet - Page 22

• Manufacturer Part Number: NJU6635
• Description: 16-character 2-line Dot Matrix Lcd Controller Driver
• Manufacturer: New Japan Radio Co.,Ltd

(4) LCD DISPLAY
Note) Power ON or power OFF is in the following order.
NJU6635 incorporates bleeder resistance to generate the LCD display driving waveform.
The bleeder resistance is set 1/5 bias suitable for 1/18 duty ratio and 1.5k
The decoupling capacitor should be connected between V
The value of capacitor is determined depending on the actual LCD panel display evaluation.
The V
Power ON
Power OFF
LCD
V
V
DD
5
is maximum swing of LCD waveform.
Power
: V
: V
Supply
5
5
should be turned on after the V
should be turned off before the V
LCD Driving Voltage vs. Duty Ratio
Duty Ratio
Bias
V
V
V
LCD Driving Voltage example
2
3
5
DD
DD
1.5k
1.5k
1.5k
1.5k
1.5k
and V
DD
turned on or at the same time.
NJU6635
turned off or at the same time.
V
V
DD
DD
V
5
DD
terminal.
-2/5V
-3/5V
1/16
1/5
-V
LCD
V
V
V
V
V
LCD
LCD
1
2
3
4
5
per resistance.
NJU6635
V
LCD