7.11.3 Pin Functions in Each Mode
Port A has the same pin functions in all operating modes. Table 7.21 indicates the pin functions of
port A.
Table 7.21 Port A Pin Functions
Pin
Pin Functions and Selection Method
PA7/KEYIN15
PA7DDR
0
1
Pin function
PA7 input
PA7 output
KEYIN15 input
This pin is driven as a bus buffer when bit IICS is set to 1 in STCR
PA6/KEYIN14
PA5/KEYIN13
PA4/KEYIN12
PA3/KEYIN11
PA6DDR
0
1
Pin function
PA6 input
PA6 output
KEYIN14 input
This pin is driven as a bus buffer when bit IICS is set to 1 in STCR
PA5DDR
0
1
Pin function
PA5 input
PA5 output
KEYIN13 input
This pin is driven as a bus buffer when bit IICS is set to 1 in STCR
PA4DDR
0
1
Pin function
PA4 input
PA4 output
KEYIN12 input
This pin is driven as a bus buffer when bit IICS is set to 1 in STCR
PA3DDR
0
1
Pin function
PA3 input
PA3 output
KEYIN11 input
148