lc74772v Sanyo Semiconductor Corporation, lc74772v Datasheet - Page 4

• Manufacturer Part Number: lc74772v
• Description: Camcorder On-screen Display Lsi
• Manufacturer: Sanyo Semiconductor Corporation

Pin Functions
Note: 1. Built-in pull-up resistors can be specified for inclusion in the CS (pin 6), SCLK (pin 7), SIN (pin 8), and RST (pin 23) pins as mask options.
PinNo.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
2. In clock input mode (when CTRL1 is high), the function that holds the OSC
OSC
OUT
VSYNC
HSYNC
Symbol
BLANK
CTRL1
TEST
OSC
CK
SCLK
CHA4
CHA3
BLK4
BLK3
RST
SIN
V
V
CS
NC
NC
R
G
B
DD
SS
OUT
MOD
OUT
IN
IN
Ground
LC oscillator
Clock input control
Test control input
Enable input
Clock input
Data input
Clock output
Blanking signal output
Character data output
Unused
Unused
Blanking signal output
Character data output
Blanking signal output
Character data output
Character data output
Character data output
Output control input
Vertical synchronizing
signal input
Horizontal synchronizing
Reset input
Power supply
Function
Ground connection
Connections for the coil and capacitor that form the oscillator that generates the character
output horizontal dot clock.
Control input that switches between LC oscillator mode and clock input mode
Low: LC oscillator mode, high: clock input mode
Test mode control input (The IC operates in test mode when this input is high.)
Serial data input enable input
Low: active (This input has hysteresis characteristics.)
Serial data input clock input (This input has hysteresis characteristics.)
Serial data input (This input has hysteresis characteristics.)
LC oscillator clock monitor output
This signal is output when RST is low.
Blanking signal output (system 2)
Functions as the system 4 blanking data signal output in 4-system mode.
Character data signal output (system 2)
Functions as the system 4 character data signal output in 4-system mode.
Must be left open or tied to ground in normal operation.
Must be left open or tied to ground in normal operation.
Blanking signal output (system 1)
Functions as the system 3 blanking data signal output in 4-system mode.
Character data signal output (system 1)
Functions as the system 3 character data signal output in 4-system mode.
Blanking signal output (blanking signal for RGB output)
Functions as the system 2 blanking data signal output in 4-system mode.
Character data (R) signal output
Functions as the system 2 character data signal output in 4-system mode.
Character data (G) signal output
Functions as the system 1 blanking data signal output in 4-system mode.
Character data (B) signal output
Functions as the system 1 character data signal output in 4-system mode.
Control input that switches between RGB output and 4-system output
Low: RGB output, high 4-system output
Vertical synchronizing signal input (This input has hysteresis characteristics.)
Horizontal synchronizing signal input (This input has hysteresis characteristics.)
signal input
System reset signal input (This input has hysteresis characteristics.)
Power supply connection (+5 V)
LC74772V
IN
(pin 2) pin high during an oscillator reset is stopped.
Description
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