UPD6461GS NEC [NEC], UPD6461GS Datasheet - Page 6

• Manufacturer Part Number: UPD6461GS
• Description: CMOS LSI CHIP FOR CAMCORDER ON-SCREEN CHARACTER DISPLAY 12 ROWS x 24 COLUMNS
• Manufacturer: NEC [NEC]

6
PIN FUNCTIONS
(3, 12, 13, 22)
Pin No.
Notes 1. Pin numbers indicated in (
10 (11)
11 (14)
12 (15)
13 (16)
14 (17)
15 (18)
16 (19)
17 (20)
18 (21)
19 (23)
20 (24)
9 (10)
3 (4)
4 (5)
5 (6)
6 (7)
7 (8)
8 (9)
1
2
Note 1
2. Signals in (
Symbol
OSC
OSC
Hsync
DATA
CK
(G
Vsync
TEST
BLK1
BLK2
(R
(B
GND
N.C.
CLK
PCL
V
V
CS
V
V
V
V
V
BLK
BLK
BLK
BLK
DD
C1
C2
OUT
R
G
B
Note 2
OUT
IN
)
)
)
Clock input
Chip select input
Serial data input
Power-on clear
Power supply
Clock output
LC oscillator input/
output
OSC
input
Test pin
Ground pin
Blanking signal output 1
Character signal output
1
Blanking signal output 2
(blanking R)
Character signal output
2
(blanking G)
Blanking signal output
(blanking B)
Character signal output
Vertical synchronizing
signal input
Horizontal synchroniz-
ing signal input
No connection
) are set by a mask option (RGB + RGB compatible blanking).
IN
Function
: External clock
Note 2
) are that of the PD6461GT-xxx.
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 OSC
OSC
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 V
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 R
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 V
Pin used to output the blanking signal for the video signal output from the V
pin. The blanking signal is high active.
(This pin outputs the blanking signal for the video signal output from the V
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 V
pin. The blanking signal is high active.)
Pin used to output the blanking signal for the video signals output from the
V
(This pin outputs the blanking signal for the video signal output from the V
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
R
, V
OUT
G
, and V
pin open.)
B
pins. The blanking signal is high active.
Description
BLK
R
, V
, G
G
, and V
BLK
, and B
PD6461, 6462
B
.)
IN
BLK
pin. Leave the
.)
C1
C2
R
G
B