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MN838850 데이터시트 PDF




Panasonic에서 제조한 전자 부품 MN838850은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 MN838850 기능
기능 Source Driver for LCD Panel Drive
제조업체 Panasonic
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MN838850 데이터시트, 핀배열, 회로
Color TFT LCD Driver
MN838850
Source Driver for LCD Panel Drive
s Overview
The MN838850 converts digital display data from a personal computer or an engineering workstation to analog signal
voltages to allow those signals to be displayed on a color TFT LCD panel.
s Features
Includes a built-in D/A converter and accepts 8-bit digital input data for 16.7-million color display.
Output dynamic range: 14.6 V P-P (when AVDD = 15 V)
Supports both dot inversion drive and source inversion drive schemes.
Number of drive outputs: 384
Input data bus: acquires two pixels at the same time
Supports control of data inversion at each clock cycle.
Supports γ correction.
Adopts a drive scheme that does not require precharging.
Allows serial cascade connection.
The clock is automatically stopped after the acquisition of a fixed amount of data.
The shift register shift direction can be set to be either left-to-right or right-to-left.
Digital circuit block features low-voltage operation:
2.7 to 3.6 V
Maximum operating clock frequency:
50 MHz (3.1 to 3.6 V), 40 MHz (2.7 to 3.6 V)
s Applications
TFT LCD panels
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MN838850 pdf, 반도체, 판매, 대치품
MN838850
s Pin Descriptions
Pin No.
D00 to D07
D10 to D17
D20 to D27
D30 to D37
D40 to D47
D50 to D57
Y1 to Y384
PLSR
PRSL
I/O
I
O
I/O
Color TFT LCD Driver
Pin Name
Image data input
Description
Image data input pins.
The R, G, and B image signals are input using
these pins.
D07, D17, D27, D37, D47, D57 : MSB
D00, D10, D20, D30, D40, D50 : LSB
Image signal output
Start pulse input and output
Analog image signal output pins.
Internal shift register start pulse input and
output pins.
RL = "H"
RL = "L"
PLSR Right shift input Left shift output
PRSL Right shift output Left shift input
RL
FY
A
POL
INV1
INV2
VREF0 to 9
VOPU, VOPL
AVDD
AVSS
DVDD
DVSS
TEST
I Shift direction selection
signal input
Input signal that selects the shift direction.
High: Right shift (Y1 to Y384)
Low: Left shift (Y384 to Y1)
I Clock input
Data acquisition clock input pin.
I Analog output control
Controls the analog voltage output.
I Output polarity reversal
control input
Switches the reference voltage for odd and even
outputs.
I Data inversion control input Controls inversion of the input image signal.
INV1: Used for D2(7 : 0), D1(7 : 0), D0(7 : 0)
INV2: Used for D5(7 : 0), D4(7 : 0), D3(7 : 0)
I γ correction voltage input Inputs the γ correction voltage used by the D/A
converter.
I Analog reference voltage Provides the reference voltage that determines
the analog circuit operating point.
VOPU: Reference voltage for the high side output
VOPL : Reference voltage for the low side output
I Analog system power supply Provides the power for the analog circuits.
I Digital system power supply Provides the power for the digital circuits.
I Test
Used for device testing.
(Pull-down resistor: 100 k) This pin must be left open during normal operation.
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MN838850 전자부품, 판매, 대치품
Color TFT LCD Driver
MN838850
s Functional Description (continued)
Dot inversion drive
Since dot inversion drive is used, the analog output voltages with respect to the opposite electrode voltage differ in polarity
for each of the odd and even numbered output pins. This output voltage polarity is controlled by POL. The table below
lists the correspondence between the POL polarity setting, the analog output polarity and the VREF used.
POL Y2n-1 Y2n
"L" Positivepolarity Negativepolarity
VREF9 to 5 VREF4 to 0
"H" Negativepolarity Positivepolarity
VREF4 to 0 VREF9 to 5
The POL switching timing is presented below.
POL should be switched during the period when A is low, after the last data has been input, and before the next start
signal has been input. The POL signal level is acquired by the device internally on the falling edge of the A signal. The
output polarity is determined by the acquired signal level.
A
POL
Y2n-1
Y2n
(n=1 to 192) One horizontal period
Negative
polarity
Positive
polarity
Positive
polarity
Negative
polarity
POL Switching Timing
Negative
polarity
Positive
polarity
Opposite electrode
voltages
A
Start Signal
Dxx
POL
First data
First data
Last data
Last data
One horizontal period
Details of the POL Switching Timing
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부품번호상세설명 및 기능제조사
MN838850

Source Driver for LCD Panel Drive

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