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PDF M52347FP Data sheet ( Hoja de datos )

Número de pieza M52347FP
Descripción SYNC SIGNAL PROCESSOR
Fabricantes Mitsubishi 
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DESCRIPTION
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.
FEATURES
Low power consumption with supply voltage of 5V
Capable of obtaining output information on whether to input syn-
chronous signal, and on polarity
Output of clamp pulse
Equipped with V TIME GATE SW that enables selecting whether
or not VD portion pulse is output from pin 14 / 15 .
Equipped with CLAMP SW that enables switching the clamp
pulse output position.
APPLICATION
Display monitor
RECOMMENDED OPERATING CONDITION
Supply voltage range..............................................Vcc=4.5 to 5.5V
Rated Supply voltage............................................................Vcc=5V
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
PIN CONFIGURATION (TOP VIEW)
H. STATE 1
V. STATE 2
CLAMP SW 3
GREEN IN 4
GND 5
COMP/H IN 6
COMP/H DET 7
V IN 8
V DET 9
V TIME GATE SW 10
20 CLAMP TIMING
19 Y. POL.
18 H. POL.
17 CLAMP+ OUT
16 VCC
15 HD- OUT
14 HD+ OUT
13 VD+ OUT
12 V S/S OUT
11 V S/S IN
Outline 20P4B(SP)
20P2N-A(FP)
BLOCK DIAGRAM
CLAMP
TIMING
20
Y. POL.
19
H. POL.
18
CLAMP+
OUT
17
VCC
16
HD-
OUT
15
HD+
OUT
14
VD+
OUT
13
V S/S
OUT
12
V S/S
IN
11
CLAMP
GET
EDGE
SW
V. TIME
GATE
V. SYNC
SEP
LOGIC
LOGIC
SYNC
SEP
H
SHAPE
H
DET
V
SHAPE
V
DET
12
34
56 7
8 9 10
H. STATE V. STATE CLAMP GREEN GND COMP/H COMP/H V IN V DET V TIME GATA
SW IN
IN DET
SW
1

1 page




M52347FP pdf
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
ELECTRICAL CHARACTERISTICS (cont.)
Symbol
VD+-DA
Parameter
Relay
condition
TP
condition
In
put
4 6 8 16 3 10 pin
VD+ -delay
time (A)
0V
2 2 1 1 2.5V 5V 8
5V
Input condition
50kHz
1µS 2VP-P
Out
put Output waveform
pin
Input 8 (50%)
13
Output 13 (50%)
Time
Meas
Note
Limits
Unit
Min. Typ. Max.
- 100 350 nsec
VD+-DB
V11H
VD+ -delay
time (B)
0V
2 2 1 1 2.5V 5V 8
5V
50kHz
1µS 2VP-P
V Sync-Sep
Threshold
voltage H
50kHz
1µS 2VP-P
0V 6
2121
0V
5V 11 DC voltage must
be applied.
Input 8 (50%)
13
Time
Meas
Output 13 (50%)
14
15
V11L
V Sync-Sep
Threshold
voltage L
1µS 50kHz
2VP-P
0V 6
2121
0V
5V 11 DC voltage must
be applied.
14
15
- 70 350 nsec
Checking output
pulse for output
with a voltage of
0 VDC applied,
increase the DC
voltage and then
measure the volt-
age when the
output pulse is
not output.
Checking output
pulse for output
with a voltage of
5 VDC applied,
decrease the DC
voltage and then
measure the volt-
age when the
output pulse is
output.
3.0 3.5 4.0
1.3 1.8 2.3
V
V
5

5 Page





M52347FP arduino
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
3) Polarity detection and non-input detection (pins 7 and 8 )
External capacitance is required as a filter pin to detect polarity
and non-input. As the value is larger, the ripple is smaller and
less malfunction occurs. However, the response speed for
detection is lower. A sufficient external capacitance is 0.05 µF
with input of 15 kHz and 10 uF with input of 60 kHz. However,
check the frequency of the input signal in use and the filter pin
waveform with the duty ratio conditions, and then check that the
value is 3.1V or more (2.8V in capability) with positive polarity
input and 1.9V or less (2.2V in capability) with negative polarity
input.
4) V S/S IN (pin 11 )
Input a signal of having externally integrated composite sync for
V sync separation.
Composite sync input into pin 6 is output to pin 12 . Output at 12
is externally integrated and is input into pin 11 for V sync
separation. With the waveform at pin 11 , check that the H
element has been fully dropped.
The threshold levels of sync separation, given hysteresis, are
3.5V and 1.8V.
Input waveform at
pin 6
when COMP/H only is input or when both COMP/H and GREEN
are input.
8
6
4
R=10k
2
R=4.3k
0
10
100 1000
Clamp Timing Capacitance at Pin 20 (pF)
3. Sampling Pulse from VD Portion
V TIME GATE SW (Pin 10 )
Whether to output the pulse of VD portion from pins 14 and 15
can be selected. When pin 10 is "H" or OPEN, pulse of the VD
portion is output. When pin 10 is "L", the pulse of the VD portion
is not output.
Waveform at
pin 11
Output waveform at
pin 13
VTH=3.5V
VTH=1.8V
Output at pin 14 when the pin 10 is "H" or OPEN
2. Clamp Pulse
1) Clamp pulse width
CLAMP TIMING (Pin 20 )
The clamp pulse width is determined by the external resistance
and the capacitance. As the resistance value and capacitance
value are larger, the clamp pulse width is wider.
The time constant is determined by the current flowing out of pin
20 and the capacitance value of the timing pin. The flow current
at pin 20 is determined by the pin voltage and external resistance
value. When the external resistance is 4.3 (that is 700 uA) and
the external capacitance is 220 pF, the pulse width is 0.4 usec.
2) Clamp pulse position
CLAMP SW (pin 3 )
When pin 3 is "M" or "L", fixing a higher-priority signal to the
trailing edge results in occurrence of a clamp pulse. When pin 3
is 'H", and only GREEN is input, clamp pulse occurs at the
trailing edge. A clamp pulse also occurs at the leading edge
VD portion
Output at pin 14 when pin 10 is "L"
Output at pin 15 when pin 10 is "H" or OPEN
VD portion
Output at pin 15 when pin 10 is "L"
11

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