Kenwood TS-440S Serivce Manual page 34

TS-440S
SEMICONDUCTO R
APD63000 (Display unit IC1 )
Pin description
Pin No .
Symbol Pin name I/O Descriptio n
1
01 3
014
FI P
015
Segmen t
driver
0
High dielectric-strength (40V) output in the Pch open .
017
(
0
13' 019)
Corresponds to the output of
Q13
—
Q1 9
01 8
7
01 9
8 SO
Serial data output pin 0
Output serial data the trailing edge of SCK . When the n-numbe r
of pPD63000s are connected in series, this can be connected t o
the SI of the following stage .
9 BI Blanking pin
This input can turn off all indicator or displays, and can dim the m
by applying a random duty pulse from outside . Active low .
10 LH Latch pin I
Transmits the connects of the serial shift register to the buffe r
register at low level, to latch the connects at the rising time .
Active rising (leading) edge .
11 SI Serial data input pin I
This is the data input pin . Inputs data to the shift register at th e
rising edge of SCK .
Reads out the SI data to the shift register at the rising edge o f
12 SCK Serial clock input pin I SCK .
Outputs data from SO at the trailing edge of SCK .
13 CS
Chip select pin
When CS is high, this inhibits SCK and LH, and when CS is low ,
activates SCK and LH .
14 Vss GND
Connect to the GND terminal of the system .
15
0 0
16 0 1
Pch open-drain system, high dielectric-strength output .
17 0 2
18 0 3 FIP Corresponds to th e
0 4 output of 0o to
012
V0 0
0 5
Segmen t
Qg
driver
Pc h
07
r 1p
0 8
O 9
(00 —
012)
0
26
Ot o
0 11
Vss
Oo Ot s
27
01 2
28 V00
Power supply pin — 5 V ± 10%
)
)
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