Hitachi H8/3048 Hardware Manual page 287

Table 9-17 Port 9 Pin Functions
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Pin Pin Functions and Selection Method
P9 /SCK /IRQ Bit C/A in SMR of SCI1, bits CKE0 and CKE1 in SCR of SCI1, and bit P9
5 1 5
select the pin function as follows
CKE1
C/A
CKE0
P9
5
Pin function
P9 /SCK /IRQ Bit C/A in SMR of SCI0, bits CKE0 and CKE1 in SCR of SCI0, and bit P9
4 0 4
select the pin function as follows
CKE1
C/A
CKE0
P9
4
Pin function
P9 /RxD Bit RE in SCR of SCI1 and bit P9
3 1
RE
P9
3
Pin function
P9 /RxD Bit RE in SCR of SCI0, bit SMIF in SCMR, and bit P9
2 0
function as follows
SMIF
RE
P9
2
Pin function
0
DDR 0 1
P9 P9
5
input output
0
DDR 0 1
P9 P9
4
input output
DDR 0
P9 input
3
DDR 0
P9 input
2
274
0
0
1
—
SCK output SCK
5 1 1
IRQ input
5
0
0
1
—
SCK output SCK
4 0 0
IRQ input
4
DDR select the pin function as follows
3
0
1
P9 output
3
DDR select the pin
2
0
0
1
P9 output RxD
2
DDR
5
1
1 —
— —
— —
output SCK input
1
DDR
4
1
1 —
— —
— —
output SCK input
0
1
—
RxD input
1
1
1 —
— —
input RxD input
0 0