UPD161622 datasheet(11/103 Pages) NEC

11 / 103 page

Data Sheet S15649EJ2V0DS

µ PD161622

3.5 Driver-Related Pins

Symbol

Pin Name

Pad No.

I/O

Function

S1 to S396

Source output

556 to 365,

352 to 149

Output Source output pins

VCOM

COM adjustment

Output This pin is the common adjustment output.

VCOUT1

Center rectangle

signal output

81, 82

Output This pin is the center rectangle signal output (Vp-p) for common

modulation between 0 V to VS.

VCOUT2

Center rectangle

signal output

Output This pin is the center rectangle signal output (Vp-p) for common

modulation between 0 V to VCC1.

BGRIN

External-power-

supply connect

Input

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

µPD161622

When BGRS = 0, power supply with built-in the

µPD161622 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.

VCOMR

VCOM setting

resistor connection

Input

Connects an external feedback resistor for VCOM setting.

This pin is valid when FBRSEL = L. In this case, connect a feedback

resistor between the VCOM pin and GND.

When FBRSEL = H, the amplifier for setting the common waveform

center value operates as a voltage follower. In this case, leave it open.

For more detail, refer to

5.5 Common Adjustment.

FBRSEL

VCOM setting

external circuit select

Input

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.

FBRSEL = H: Voltage follower circuit used (VCOMR connected to VCOM

internally)

FBRSEL = L: External feedback resistor used

CVPH,

CVPL,

CVNH,

CVNL

Basis power supply

for

γ -corrected

power supplies

77,

76,

75,

−

This is operational amplifier output pin for the

γ -corrected power

supplies. Normally, this pin connects capacitor of 1

µF

DAC0 to DAC7

D/A converter

value setting

114 to 107

Input

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

This pin is pulled up to the inside IC, therefore, connect to only VSS

when in low level setting pin.

For more details, refer to

5.5 Common Adjustment Circuit.

UPD161622 Datenblatt(PDF) 11 Page - NEC

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