UPD161622 NEC, UPD161622 Datasheet - Page 11

• Manufacturer Part Number: UPD161622
• Description: 396 OUTPUT TFT-LCD SOURCE DRIVER
• Manufacturer: NEC

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3.5 Driver-Related Pins
S
VCOM
VCOUT1
VCOUT2
BGRIN
VCOMR
FBR
CVPH,
CVPL,
CVNH,
CVNL
DAC
1
to S
Symbol
SEL
0
to DAC
396
7
Source output
COM adjustment
Center rectangle
signal output
Center rectangle
signal output
External-power-
supply connect
VCOM setting
resistor connection
VCOM setting
external circuit select
Basis power supply
for -corrected
power supplies
D/A converter
value setting
Pin Name
556 to 365,
352 to 149
85
81, 82
68
90
89
92
77,
76,
75,
74
114 to 107
Pad No.
Data Sheet S15649EJ2V0DS
Output Source output pins
Output This pin is the common adjustment output.
Output This pin is the center rectangle signal output (V
Output This pin is the center rectangle signal output (V
Input
Input
Input
Input
I/O
modulation between 0 V to V
modulation between 0 V to V
This is an external-power-supply connect pin for VCOM.
This pin is valid when BGRS (power supply control register 1: R25) =
1. In this case, the reference voltage of the amplifier for setting the
common waveform center value is input from outside the PD161622
When BGRS = 0, power supply with built-in the PD161622 is set up
as a standard voltage for common waveform center value setup.
In this case, leave it open.
For more detail, refer to 5.5 Common Adjustment.
Connects an external feedback resistor for VCOM setting.
This pin is valid when FBR
resistor between the VCOM pin and GND.
When FBR
center value operates as a voltage follower. In this case, leave it open.
For more detail, refer to 5.5 Common Adjustment.
This pin is used to select the method of adjusting the amplifier for
setting the common waveform center value used to set the COMMON
drive waveform center level.
FBR
FBR
This is operational amplifier output pin for the -corrected power
supplies. Normally, this pin connects capacitor of 1 F
These pins set the reference voltage of the amplifier for setting the
VCOM value used to set the COMMON drive waveform center level.
These pins are valid when the VCOM output center value setting
register (R29) = 00H and BGRS (R25: D
This pin is pulled up to the inside IC, therefore, connect to only V
when in low level setting pin.
For more details, refer to 5.5 Common Adjustment Circuit.
SEL
SEL
= H: Voltage follower circuit used (VCOMR connected to VCOM
= L: External feedback resistor used
SEL
internally)
= H, the amplifier for setting the common waveform
SEL
S
CC1
.
= L. In this case, connect a feedback
Function
.
6
) = 0.
p-p
p-p
) for common
) for common
PD161622
SS
11