UPD161831 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD161831

240/244-OUTPUT TFT-LCD SOURCE DRIVER WITH TIMING GENERATOR (COMPATIBLE WITH 64-GRAY SCALES)

NEC => Renesas Technology 

µPD161831

3.4 Power Supply Function Control Pin

Pin Symbol

Pin Name

Pin Name I/O

Description

5 C1+/−,C2+/−, Booster capacitor 359 to 404

−

Connect the boost capacitor of the DC/DC converter to this pin.

C3+/−,C4+/−, connection

Booster ratio is difference on the way of using condenser connection.

C5+/−

For details, refer to figure 3−3.

VDC2

DC/DC converter 352 to 358

−

DC/DC converter boost output (VDC x 2 or VDC x 3). This output is the VS and

output

VR amplifier power supply. The VDC2 boot step is selected with the VCD2 bit.

VCD2 bit = 0: VDC x 2

VCD2 bit = 1: VDC x 3

VS

Source power

336 to 332

−

Source voltage output pin.

supply output

The VS output voltage can be changed through the VSEL0 to VSEL2.

MVS

External

417, 418

Input An external resistance can be input to set any output voltage.

resistance input

EXRV bit = 0: Leave open (Internal resistor selection)

EXRV bit = 1: Connect external resistor.

VR

Reference power 341 to 344

−

Gate reference power supply output pin.

supply output

The VR output voltage can be changed through the VRSEL to VRSEL2 setting.

VDD2

DC/DC converter 303 to 306,

−

DC/DC converter boost output (VGD x 2)

output

406, 407

VSS1

DC/DC converter 299 to 302,

−

DC/DC converter boost output (VGD x −1)

output

408 to 411

VSS2

DC/DC converter 295 to 298

−

DC/DC converter boost output (VGD x −2)

output

VDC

Reference power 345 to 351

−

Extension pin used to control circuit on panel.

supply input for

source power

supply voltage

VGD

Reference power 337 to 340

−

Extension pin used to control circuit on panel.

supply input for

gate power

supply voltage

DCCLK

Boost clock

405

input

Input Pin used to input boost clock of DC/DC converter.

Figure 3−2. DC/DC Converter Boost Configuration

VCC: 2.5 to 3.6 V

VDC: 2.5 to 3.6 V

VSS: 0 V

VDC2: VDC x 2 or VDC x 3

VR, VS

VDD2: VR x 2 or VS x 2

Regulator outputs VR and VS are generated from VDC2.

The following voltages can be selected for VS and VR.

3.0 V, 3.5 V, 4.0 V, 4.5 V, 4.75 V, 5.0 V, 5.25 V, 5.5 V

VSS1: VR x −1 or VS x −1

VSS2: VR x −2 or VS x −2

Preliminary Product Information S16269EJ2V0PM

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