SPFD54124B Drise, SPFD54124B Datasheet - Page 12

• Manufacturer Part Number: SPFD54124B
• Description: 396-Channel 6-Bit Source Driver
• Manufacturer: Drise

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C11P/N,
C12P/N
C21P/N,
C22P/N
C23P/N
VCI1
AVDD
VGH
VGL
VCL
VDD_18V
VREF
GVDD
FB
DRV
Source/Gate Driver and VCOM Signals
G1~G162
S1~S396
VCOM
VcomH
VcomL
VDDIO
VDD
VSS
VSSA
Signal
Pin No.
10
1
1
1
1
1
1
1
1
1
1
162
396
1
1
1
1
1
I/O
-
O
O
O
O
O
O
O
I/O
I
O
O
O
O
O
O
I
I
Connected with
Step-up
capacitor
Stabilizing
capacitor
Stabilizing
capacitor
Stabilizing
capacitor
Stabilizing
capacitor
Stabilizing
capacitor
Stabilizing
capacitor
Stabilizing
capacitor
Stabilizing
capacitor
Backlight voltage
enerator
DC-DC
generator
LCD
LCD
TFT panel
common
electrode
Stabilizing
capacitor
Stabilizing
capacitor
or open
Stabilizing
capacitor
Stabilizing
capacitor
voltage
Function
Connect boost capacitors for the internal DC/DC converter circuit to these
pins.
Leave the pins open when DC/DC converter circuits are not used.
An internal reference voltage level, which is regulated from VDD. The
amplitude of VCI1 is from VDD-GND. Place a stabilizing capacitor between
GND.
Output 2x VCI1 voltage level from the step-up circuit 1. Place a stabilizing
capacitor between GND. AVDD = 4.5 ~ 5.5V
An output voltage from the step-up circuit 2x, 4x ~ 6x of the VCI1 level.
Connect with a stabilizing capacitor.
An output voltage from the step-up circuit –2x, -3x ~ -5x of the VCI1 level.
Connect with a stabilizing capacitor.
An output voltage from the step-up circuit 2, –1x of the VCI1 level.
Connect with a stabilizing capacitor.
Reference voltage for Internal logic block
Connect with a stabilizing capacitor
Reference voltage for power block
Connect with a stabilizing capacitor.
Output source driver grayscale reference voltage level.
The feedback voltage from DC-DC
Output gate driver signals, which has the swing from VGH to VGL
Output source driver signals. The D/A converted 64-gray-scale analog voltage
is output.
Output a square wave signal with the swing from VcomH - VcomL to the
common electrode of TFT panel. The alternating cycle can be set to frame
inversion or 1-line inversion.
Output the high level of VCOM voltage. Connect with a capacitor to stabilize.
Output the low level of VCOM voltage. Connect with a capacitor to stabilize.
VDDIO input voltage for control pins using
Power supply Input
Digital ground pin.
Analog ground pin.
12
SPFD54124B
Preliminary
Preliminary Version: 0.6
APR. 26, 2007