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2.8
Power On/Off Sequence
The power sequence specifications are shown as the following table and diagram.
Note:
(1)The supply voltage of the external system for the module input should
be the same as the definition of Vcc.
(2)When the backlight turns on before the LCD operation of the LCD
turns off, the display may momentarily show an abnormal screen.
(3)In case of VCC = off level, please keep the level of input signals on
the low or keep a high impedance.
(4)T4 should be measured after the module has been fully discharged
between power off and on period.
(5)Interface signal shall not be kept at high impedance when the power
is on.
(6)INX won't take any responsibility for the products which are damaged
by the customers not following the Power Sequence.
(7)There might be slight electronic noise when LCD is turned off (even
backlight unit is also off). To avoid this symptom, we suggest "Vcc falling
timing" to follow "T7 spec".
Table 2.8: Timing Specifications:
Parameter
Min
T1
0.5
T2
0
T3
0
T4
500
T5
450
T6
200
T7
10
T8
10
T9
10
T10
20
Value
Typ
Max
-
10
-
50
-
50
-
-
-
-
-
-
-
100
-
-
-
-
-
50
19
Units
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
IDK-1110P-50XGB1 User Manual
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