Harman Kardon AVR125 Service Manual page 43

AVR125
IC PIN FUNCTION (M-COM : MB90F476APFG) : IC72
LQFP QFP
80 82
81 83
78 80
77 79
75 77
83 to 90 85 to 92
93 to
91 to 98
100
99
100 1 to 4
1 and 2
3 to 6 5 to 8
Pin Name Circuit Type
X0 A
X1 A
X0A A
X1A A
RSTX B
P00 to P07
C
AD00 to
(CMOS)
AD07
D00 to D07
P10 to P17
C
AD08 to
(CMOS)
AD15
D08 to D15
P20 to P23
E
(CMOS/H)
A16 to A19
A16 to A19
P24 to P27
E
A20 to A23
(CMOS/H)
A20 to A23
PPG0 to 3
Oscillator pin
Oscillator pin
32 kMHz Oscillator pin
32 kMHz Oscillator pin
Reset input pin
General-purpose I/O ports
A pull-up resistor can be attached using the pull-up resistor setting
register (RDR0) (RD07 to RD00 = 1). (Invalid when set to output)
In the multiplex mode, the pins function as external address/data bus
lower I/O pins.
In the non-multiplex mode, they function as external data bus lower
output pins.
General-purpose I/O ports
A pull-up resistor can be attached using the pull-up resistor setting
register (RDR1) (RD17 to RD10 = 1). (Invalid when set to output)
In the multiplex mode, the pins function as external address/data bus
upper I/O pins.
In the non-multiplex mode, they function as external data upper output
pins.
General-purpose I/O ports
When the corresponding bit of the HACR register is 0, the pins function
as address upper output pins (A20 to A23).
When the multiplex mode is enabled and the corresponding bit of the
HACR register is 1, the pins function as general-perpose I/O port.
In the non-multiplex mode, they function as external address upper
output pins.
General-purpose I/O ports
When the corresponding bit of the HACR register is 0, the pins function
as address upper output pins (A20 to A23).
When the multiplex mode is enabled and the corresponding bit of the
HACR register is 1, the pins function as general-perpose I/O port.
In the non-multiplex mode, they function as external address upper
output pins.
The pins function as PPG timer output pin.
43
harman/kardon
Function