NL128102ac23_02 NEC, NL128102ac23_02 Datasheet - Page 13

• Manufacturer Part Number: NL128102ac23_02
• Description: TFT COLOR LCD MODULE
• Manufacturer: NEC

Note 1: When POWC is “L”, serial communication data is clear, please set again. When POWC is “L”, logic
Note 2: The way of luminance control by a variable resistor
Note 3: The way of luminance control by voltage
Note 4: The way of luminance control by BRTP signal
OSDENI
Symbol
OSDBI
GNDB
V
GND
V
DD
DD
B
input signal has to be all “0 V”. If more than “0.3 V” is inputted, inside circuit of the LCD module may
be broken.
This way works in PWSEL = “H” or “Open” and in BRTP = “Open”. The variable resistor for luminance
control should be 10 k
Maximum luminance (100%): R = 10 k
Minimum luminance (30%; ACA = “H”, 60%; ACA = “L”): R = 0
This way works in PWSEL = “H” or “Open” and in BRTP = “Open”. If luminance is controlled by
BRTH/BRTL input voltage, at first BRTH is “0 V”, and BRTL input voltage controls luminance. When
BRTL input voltage is “1 V”, the luminance become maximum, and when BRTL input voltage is “0 V”,
the luminance become minimum.
Maximum luminance (100%): BRTL = “1 V”
Minimum luminance (30%; ACA = “H”, 60%; ACA = “L”): BRTL = “0 V”
Refer to OUTSIDE CONTROL FOR LUMINANCE.
Input
Input
I/O
BRTH
Positive
Logic
type, and zero point of the resistor correspond to the minimum of luminance.
R
OSD Blue input (TTL level)
Detail of CNTDAT is mentioned in OSD FUNCTIONS.
OSD enable signal (TTL level)
Detail of CNTDAT is mentioned in OSD FUNCTIONS.
V
V
Signal ground for logic/LCD driving (V
(Connect to a system ground.)
Ground for backlight (VDDB)
GNDB is not connected the module GND (FG).
Data Sheet EN0491EJ1V0DS00
DD
DD
B (+12 V
(+12 V
5%) power supply for logic and LCD driving
BRTL
5%) power supply for backlight
Description
CC
, V
Mating variable resistor:
10 k
DD
)
NL128102AC23-02
5%, B curve
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