UPD6461GS Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD6461GS

CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY (12 ROWS × 24 COLUMNS)

NEC => Renesas Technology 

µPD6461, 6462

PIN FUNCTIONS

Pin No.Note 1 SymbolNote 2

FunctionNote 2

1

CLK

Clock input

2

3 (4)

CS

DATA

Chip select input

Serial data input

4 (5)

PCL

Power-on clear

5 (6)

6 (7)

7 (8)

8 (9)

VDD

CKOUT

OSCOUT

OSCIN

Power supply

Clock output

LC oscillator input/

output

OSCIN: External clock

input

9 (10)

TEST Test pin

10 (11)

11 (14)

GND

BLK1

Ground pin

Blanking signal output 1

12 (15)

13 (16)

VC1

Character signal output

1

BLK2

(RBLK)

Blanking signal output 2

(blanking R)

14 (17)

15 (18)

VC2

(GBLK)

VBLK

(BBLK)

Character signal output

2

(blanking G)

Blanking signal output

(blanking B)

16 (19)

17 (20)

18 (21)

19 (23)

VR

VG

VB

Vsync

20 (24)

Hsync

(3, 12, 13, 22) N.C.

Character signal output

Vertical synchronizing

signal input

Horizontal synchroniz-

ing signal input

No connection

Description

Input pin for the data read clock. The data input to the DATA pin is read at

rising edges of the clock.

Serial transfer is accepted when this pin is low.

Input pin for control data. Data is read in synchronization with the clock input

to the CLK pin.

Pin used for the power-on clear function. After power-on, set this pin from low

to high to initialize the IC.

Power supply pin

N-ch open-drain output pin used to check the oscillation frequency

Input and output pins for the oscillator for generating a dot clock. Connect

the oscillation coil and capacitors to these pins.

(When an external clock input is selected by specifying a mask option, input

an external clock (synchronized with Hsync) to the OSCIN pin. Leave the

OSCOUT pin open.)

Pin used for testing the IC. Usually, connect this pin to ground. The IC cannot

enter test mode while this pin is connected to ground.

Connect this pin to the system ground.

Pin used to output the blanking signal for the video signal output from the VC1

pin. The blanking signal is high active.

(When RGB compatible blanking has been selected by specifying a mask

option, this pin outputs the logical OR of RBLK, GBLK, and BBLK.)

Pin used to output a high-active character signal.

(When RGB compatible blanking has been selected by specifying a mask

option, this pin outputs the logical OR of VR, VG, and VB.)

Pin used to output the blanking signal for the video signal output from the VC2

pin. The blanking signal is high active.

(This pin outputs the blanking signal for the video signal output from the VR

pin. The blanking signal is high active.)

Pin used to output a high-active character signal.

(This pin outputs the blanking signal for the video signal output from the VG

pin. The blanking signal is high active.)

Pin used to output the blanking signal for the video signals output from the

VR, VG, and VB pins. The blanking signal is high active.

(This pin outputs the blanking signal for the video signal output from the VB

pin. The blanking signal is high active.)

Pins used to output high-active character signals.

Input a low-active vertical synchronizing signal to this pin.

Input a low-active horizontal synchronizing signal to this pin.

Vacant pin

Notes 1. Pin numbers indicated in ( ) are that of the µPD6461GT-xxx.

2. Signals in ( ) are set by a mask option (RGB + RGB compatible blanking).

6

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