MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
DESCRIPTION
PIN CONFIGURATION (TOP VIEW)
The M52347 automatically selects three types of synchronous
signals containing separate sync (positive and negative polarities of
0.5 to 2.5 VP-P), composite sync (positive and negative polarities of
0.5 to 2.5 VP-P) and sync-on-video (sync negative polarity), and
performs waveform shaping. The IC is optimum to synchronous
signal processing for multi-scan type display monitor.
H. STATE
1
2
3
4
20
19
CLAMP TIMING
Y. POL.
V. STATE
CLAMP SW
GREEN IN
18 H. POL.
17
CLAMP+ OUT
FEATURES
5
6
16
15
14
13
12
11
GND
VCC
• Low power consumption with supply voltage of 5V
HD- OUT
HD+ OUT
VD+ OUT
V S/S OUT
V S/S IN
COMP/H IN
• Capable of obtaining output information on whether to input syn-
chronous signal, and on polarity
7
COMP/H DET
V IN
• Output of clamp pulse
8
• Equipped with V TIME GATE SW that enables selecting whether
V DET
9
14 15
/
or not VD portion pulse is output from pin
.
• Equipped with CLAMP SW that enables switching the clamp
10
V TIME GATE SW
pulse output position.
Outline 20P4B(SP)
20P2N-A(FP)
APPLICATION
Display monitor
RECOMMENDED OPERATING CONDITION
Supply voltage range..............................................Vcc=4.5 to 5.5V
Rated Supply voltage............................................................Vcc=5V
BLOCK DIAGRAM
CLAMP
TIMING
CLAMP+
OUT
HD-
HD+
VD+
V S/S
OUT
V S/S
Y. POL.
19
H. POL.
18
VCC
16
OUT
OUT
OUT
IN
15
14
13
12
11
20
17
EDGE
SW
CLAMP
GET
V. TIME
GATE
V. SYNC
SEP
LOGIC
LOGIC
SYNC
SEP
H
H
DET
V
V
DET
SHAPE
SHAPE
1
2
3
4
5
10
6
8
7
9
H. STATE V. STATE
GREEN
IN
GND
COMP/H
IN
COMP/H
DET
V IN
V DET V TIME GATA
SW
CLAMP
SW
1