AVR 135 (serv.man3) - Harman Kardon Audio Service Manual (repair manual). Page 73

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Pin No.
Pin name
Circuit 
type
Function
LQFP*
1
QFP*
2
7
9
P30
E
 (CMOS/H) 
This is a general purpose I/O port.
A00
In non-multiplex mode, this pin functions as an external address pin.
AIN0
8/16-bit up/down timer input pin (channel 0) .
8
10
P31
E
 (CMOS/H) 
This is a general purpose I/O port.
A01
In non-multplex mode, this pin functions as an external address 
pin.
BIN0
8/16-bit up/down counter input pin (channel0) .
10
12
P32
E
 (CMOS/H) 
This is a general purpose I/O port.
A02
In non-multiplex mode, this pin functions as an external 
address pin.
ZIN0
8/16-bit up/down counter input pin (channel 0) 
11
13
P33
E
 (CMOS/H) 
This is a general purpose I/O port.
A03
In non-multiplex mode, this pin functions as an external 
address pin.
AIN1
8/16-bit up/down counter input pin (channel 1) .
12
14
P34
E
 (CMOS/H) 
This is a general purpose I/O port.
A04
In non-multiplex mode, this pin functions as an external 
address pin.
BIN1
8/16-bit up/down counter input pin (channel 1) .
13
15
P35
E
 (CMOS/H) 
This is a general purpose I/O port.
A05
In non-multiplex mode, this pin functions as an external 
address pin.
ZIN1
8/16-bit up/down counter input pin (channel 1) 
14
15
16
17
P36, P37
D*
3
 (CMOS) 
This is a general purpose I/O port.
A06, A07
In non-multiplex mode, this pin functions as an external 
address pin.
16
18
P40
G
 (CMOS/H) 
This is a general purpose I/O port.
A08
In non-multiplex mode, this pin functions as an external 
address pin.
SIN2
Simple serial I/O input pin.
17
19
P41
F
 (CMOS) 
This is a general purpose I/O port.
A09
In non-multiplex mode, this pin functions as an external 
address pin.
SOT2
Simple serial I/O output pin.
18
20
P42
G
 (CMOS/H) 
This is a general purpose I/O port.
A10
In non-multiplex mode, this pin functions as an external 
address pin.
SCK2
Simple serial I/O clock input/output pin.
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