10.14.4 Pin Functions - Hitachi H8S/2378, H8S/2378R Series Hardware Manual

10.14.4 Pin Functions

Port F pins also function as the pins for external interrupt inputs, bus control signal I/Os, and
system clock outputs (ø). The correspondence between the register specification and the pin
functions is shown below.
PF7/ø
The pin function is switched as shown below according to bit PF7DDR.
Operating
mode
PFDDR
Pin function
$6 $6 $6
PF6/$6
The pin function is switched as shown below according to the operating mode, bit EXPE, bit
ASOE, and bit PF6DDR.
Operating
mode
EXPE
ASOE 1
PF6DDR —
$6
Pin function
output
5'
5' 5'
PF5/5'
The pin function is switched as shown below according to the operating mode, bit EXPE, and bit
PF5DDR.
Operating 1, 2, 4, 5, 6
mode
EXPE
PF5DDR
5' output
Pin function
Rev. 1.0, 09/01, page 478 of 904
0
PF7 input
1, 2, 4, 5, 6
—
0
0 1
PF6 PF6
input output input
—
— 0
PF5 input
1, 2, 4 to 7
ø output
7
0
— 1
0 1 —
$6
PF6 PF6
output output
7
0
1
PF5 output
1
1
0
0 1
PF6 PF6
input output
1
—
5' output