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

10.7.4

Pin Functions

Port 8 pins also function as interrupt inputs and EXDMAC I/Os. The correspondence between the
register specification and the pin functions is shown below.
,548, , , , /('$&.6 ('$&.62 2 2 2 SC K 3
,548 ,548 ('$&.6 ('$&.6
P85/(,548
The pin function is switched as shown below according to the combination of bit AMS in
EDMDR_3 of the EXDMAC, bit C/$ in SMR in SCI_3, bit P85DDR, and bit ITS5 in ITSR.
Modes 1, 2, 4, 5, 6, 7 (EXPE = 1)
AMS
CKE1
C/$
CKE0
P85DDR
Pin function
Mode 7 (EXPE = 0)
AMS
CKE1
C/$
CKE0
P85DDR
Pin function
Note: * ,548 input when ITS5 = 1.
0
0
0 1
P85 P85
input output
0
0
0 1
P85 P85
input output
,548 interrupt input*
0
0
1
1 —
— —
SCK3 SCK3
output output
,548 interrupt input*
—
0
1
1 —
— —
SCK3 SCK3
output output
1
—
—
—
('$&.6
SCK3
input
1
—
—
—
SCK3
input
Rev. 1.0, 09/01, page 447 of 904
1
—
—
—
—
output