NJU6635 New Japan Radio Co.,Ltd, NJU6635 Datasheet - Page 22
NJU6635
Manufacturer Part Number
NJU6635
Description
16-character 2-line Dot Matrix Lcd Controller Driver
Manufacturer
New Japan Radio Co.,Ltd
Datasheet
1.NJU6635.pdf
(33 pages)
- Current page: 22 of 33
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(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
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