SVA150XG Ver la hoja de datos (PDF) - NEC => Renesas Technology
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SVA150XG Datasheet PDF : 31 Pages
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4.4 POWER SUPPLY VOLTAGE SEQUENCE
SN-SA-A0003-01-E 9/31
4.4.1 The sequence of backlight and power supply
VCC ON
3.0 V
VCC
0V
Note1
A
F
VCC OFF
2.5 V 3.0 V
B
C
Display signals*
Function signal* 0 V
VALID period
Note2
D
E
* These signals should be measured at the terminal of 100Ω resistor.
Parameter
Symbol min. typ. max. Unit Remarks
ON
A
-
-
10
ms
-
OFF
B
0.01
-
10
ms
-
Input voltage sequence
Moment
C
500
-
-
ms
-
DIP
D
-
-
20
ms
※1
Power supply and
ON
E
0.01
-
50
ms
-
signal sequence
OFF
F
0.01
-
50
ms
-
※ 1: VCC should be 2.5 V or more while VCC ON period.
[NOTE ITEM]
Note1: In terms of voltage variation (voltage drop) while VCC rising edge is below 3.0 V, a protection circuit
may work, and then this product may not work.
Note2: Display signals (D0+/-, D1+/-, D2+/-, D3+/- and CK+/-) and function signal (MSL) must be “0” voltage,
exclude the VALID period (See above sequence diagram). If these signals are higher than 0.3 V, the
internal circuit is damaged.
If some of display and function signals of this product are cut while this product is working, even if the
signal input to it once again, it might not work normally. If customer stops the display and function
signals, they should be cut VCC.
Note3: The backlight power supply voltage should be inputted within the valid period of display and function
signals, in order to avoid unstable data display.
4.4.2 Power supply voltage ripple
This product works, even if the ripple voltage levels are beyond the permissible values as the following table,
but there might be noise on the display image.
Ripple voltage
Note1
Parameter Power supply voltage
(Measured at input terminal of power supply)
VCC
3.3 V
≤ 100
Note1: The permissible ripple voltage includes spike noise.
Unit
mVp-p
Not duplication without authorization
Shanghai SVA NEC Liquid Crystal Display Co., Ltd.
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