UPD6467 View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD6467

ON-SCREEN CHARACTER DISPLAY CMOS IC FOR 512-CHARACTER,12-ROW, 28-COLUMN, CAMERA-CONTAINED VCR

NEC => Renesas Technology 

µPD6467

1. INITIAL STATUS SETTING

1.1 Initial Status Setting

The µPD6467 selects the following parameters by using an initial status setting command.

Parameter

(1) Dot clock

(2) Vertical display start position

(3) Pin selection

LC oscillation

3-row unit setting

RGB + VC1 + VC2

(4) Output selection

Option A

(5) Character color reversal

specification selection

Black character

(6) Function selection

Character blinking

(7) External clock frequency selection ×1 frequency mode

Selected by:

External clock input

9-row unit setting

RGB + RGB compatible BLK

(RGB + 3BLK)

Option B

Option C

White character

Character left/right reversal

×2 frequency mode

(1) Dot clock

To select a dot clock for character display. If an external clock input is selected, refer to External Clock Input

in 6. ELECTRICAL CHARACTERISTICS.

(2) Vertical display start position

To select the setting accuracy of the vertical display start position of the character display area. In 3-row units,

the vertical display start position can be set more finely than in 9-row units.

(3) Pin selection

To select the setting of the output pins.

When RGB + VC1 + VC2 is selected, character signals are output from pins VR, VG, VB, VBLK, VC1, BLK1, VC2,

and BLK2. When RGB + 3BLK is selected, character signals are output from pins VR, VG, VB, RBLK, GBLK, BBLK,

VC1, and BLK1.

When RGB + VC1 + VC2 is selected with a video camera with a color view finder, colored characters can be

displayed in the view finder. When RGB + 3BLK is selected, character signals can be separated color

specification.

(4) Output selection

To set the output format of the character signal where the setting of the output pin is RGB + VC1 + VC2 (setting

the output format of the character signal is invalid where the setting of the output pin is RGB + 3BLK).

When an on-screen character display IC is used in a video camera, some items of information (such as date

and title) are displayed on the video tape, and the others (such as battery alarm, focus, and counter indication)

are only displayed in the view finder. The µPD6467 can select these items of information in row or half-row

units by using the output pin. Select the output format from three types: option A, option B, and option C (when

3BLK is selected, however, be sure to select option B).

Data Sheet S14455EJ1V0DS00

9

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