Harman Kardon AVR 525, Service Manual

Page: 112 / 187

CXP82532/82540
– 4 –
Pin Description
(Port A)
8-bit port; single bit
addressable.
(8 pins)
(Port B)
Single bit addressable from
amongst lower 7 bits;
highest bit (PB7)
dedicated to output.
(8 pins)
(Port C)
8-bit port; single bit
addressable. Can provide
12mA sink current.
(8 pins)
(Port E)
8-bit port with lower 6 bits
dedicated to input and
upper 2 bits dedicated to
output.
(8 pins)
Analog input to A/D converter.
(8 pins)
External capture input for 16-bit timer/counter.
Chip select input for serial interface (CH0).
Serial clock (CH0) input/output.
Serial data (CH0) input.
Serial data (CH0) output.
Serial clock (CH1) input/output.
Serial data (CH1) input.
Serial data (CH1) output.
Key return input for FDP segment signal
which performs key scanning.
Input for external
interrupt requests.
(4 pins)
Input for remote control receiver circuit.
Output pin for 16-bit timer/counter
rectangular waveform.
Symbol I/O Description
PA0/AN0
to
PA7/AN7
PB0/CINT
PB1/CS0
PB2/SCK0
PB3/SI0
PB4/SO0
PB5/SCK1
PB6/SI1
PB7/SO1
PC0/KR0
to
PC7/KR7
PE0/INT0/EC0
PE1/INT1/EC1
PE2/INT2
PE3/INT3
PE4/RMC
PE5
PE6
PE7/TO
PG0 to PG3
PF0/S8
to
PF7/S15
S16 to S20
T8/S28
to
T15/S21
T0 to T7
PD0/S0
to
PD7/S7
I/O/Analog input
I/O/Input
I/O/Input
I/O/I/O
I/O/Input
I/O/Output
I/O/I/O
I/O/Input
Output/Output
I/O/Input
Input/Input/Input
Input/Input/Input
Input/Input
Input/Input
Input/Input
Input
Output
Output/Output
I/O
Output/Output
Output
Output/Output
Output
Output/Output
(Port G)
4-bit input/output port; single bit addressable.
(4 pins)
(Port F)
8-bit dedicated output port.
(8 pins)
Segment signal output for FDP.
Dual purpose output for FDP timing and segment signals.
Timing signal output for FDP.
(Port D)
8-bit dedicated output port.
(8 pins)
Segment signal output for FDP.
External event input
to timer/counter.
(2 pins)
Segment signal
output for FDP.
AVR525 harman/kardon
112