NL160120AC27_22B NEC, NL160120AC27_22B Datasheet - Page 18

• Manufacturer Part Number: NL160120AC27_22B
• Description: Display Module
• Manufacturer: NEC

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4.6.3 Detail of BRTP timing
(1) Timing diagrams
(2) Each parameter
BRTP
• Outline chart
• Detail of A part
PWSEL (Low)
Note1: Definition of parameters is as follows.
Note2: See the following formula for luminance control frequency.
Note3: See "4.6.1 Luminance control methods".
Note4: If tPWL is more than 500ms, the backlight will be turned off by a protection circuit for
Note5: When VDDB is ON and BRTC is high, voltage to BRTI, BRTP and PWSEL terminals should
Luminance control frequency
VBPH
VBPL
BRTC
BRTP
inverter. The inverter will start to work when power is supplied again.
be applied.
Low period
Luminance control frequency = 1/tv × (n+0.25) [or (n + 0.75)]
The interference noise of luminance control frequency and input signal frequency for
LCD panel signal processing board may appear on a display. Set up luminance control
frequency so that the interference noise does not appear!
FL =
Parameter
Duty ratio
n = 1, 2, 3 · · · · · ·
tv: Vertical cycle (See "4.9.1 Timing characteristics".)
tPW
PRELIMINARY DATA SHEET DOD-PP-0619 (1st edition)
1
DL =
tPWH
0ms ≤ tPWL ≤ 500ms
Symbol
tPWL
tPWH
tPW
DL
FL
A
tPW
min.
185
0.2
0
typ.
-
-
-
tPWL
0ms ≤ tPWL ≤ 500ms
max.
325
500
1.0
NL160120AC27-22B
Unit
Hz
ms
-
0ms ≤ tPWL ≤ 500ms
Note1, Note2
Note1, Note3
Remarks
Note4
18
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