Atmega162/v – Rainbow Electronics ATmega162V User Manual
Page 70
70
ATmega162/V
2513E–AVR–09/03
Notes:
1. ADA is short for ADdress Active and represents the time when address is output. See
“External Memory Interface” on page 24.
2. PCINTn is Pin Change Interrupt Enable bit n.
3. PCINTn is Pin Change Interrupt input n.
Notes:
1. PCINT is Pin Change Interrupt Enable bit n.
2. PCINT is Pin Change Interrupt input n.
Table 30. Overriding Signals for Alternate Functions in PA7..PA4
Signal
Name
PA7/AD7/
PCINT7
PA6/AD6/PCINT6
PA5/AD5/PCINT5
PA4/AD4/PCINT4
PUOE
SRE
SRE
SRE
SRE
PUOV
~(WR + ADA
PORTA7
~(WR + ADA) •
PORTA6
~(WR + ADA) •
PORTA5
~(WR + ADA) •
PORTA4
DDOE
SRE
SRE
SRE
SRE
DDOV
WR + ADA
WR + ADA
WR + ADA
WR + ADA
PVOE
SRE
SRE
SRE
SRE
PVOV
if (ADA) then
A7
else
D7 OUTPUT
• WR
if (ADA) then
A6
else
D6 OUTPUT
• WR
if (ADA) then
A5
else
D5 OUTPUT
• WR
if (ADA) then
A4
else
D4 OUTPUT
• WR
DIEOE
PCIE0 • PCINT7
PCIE0 • PCINT6
PCIE0 • PCINT5
PCIE0 • PCINT4
DIEOV
1
1
1
1
DI
D7 INPUT/
PCINT7
D6 INPUT/
PCINT6
D5 INPUT/
PCINT5
D4 INPUT/
PCINT4
AIO
–
–
–
–
Table 31. Overriding Signals for Alternate Functions in PA3..PA0
Signal
Name
PA3/AD3/
PCINT3
PA2/AD2/
PCINT2
PA1/AD1/
PCINT1
PA0/AD0/
PCINT0
PUOE
SRE
SRE
SRE
SRE
PUOV
~(WR + ADA) •
PORTA3
~(WR + ADA) •
PORTA2
~(WR + ADA) •
PORTA1
~(WR + ADA) •
PORTA0
DDOE
SRE
SRE
SRE
SRE
DDOV
WR + ADA
WR + ADA
WR + ADA
WR + ADA
PVOE
SRE
SRE
SRE
SRE
PVOV
if (ADA) then
A3
else
D3 OUTPUT
• WR
if (ADA) then
A2
else
D2 OUTPUT
• WR
if (ADA) then
A1
else
D1 OUTPUT
• WR
if (ADA) then
A0
else
D0 OUTPUT
• WR
DIEOE
PCIE0 • PCINT3
PCIE0 • PCINT2
PCIE0 • PCINT1
PCIE0 • PCINT0
DIEOV
1
1
1
1
DI
D3 INPUT
/PCINT3
D2 INPUT
/PCINT2
D1 INPUT
/PCINT1
D0 INPUT
/PCINT0
AIO
–
–
–
–