3069RF-ZTAT Datasheet, PDF (310/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

Table 8.17 Port 9 Pin Functions
Pin
P9 /SCK /IRQ
5
1
5
P9 /SCK /IRQ
4
0
4
P9 /RxD
3
1
P9 /RxD
2
0
Pin Functions and Selection Method
Bit C/A in SMR of SCI1, bits CKE0 and CKE1 in SCR, and bit P9 DDR select the pin function
5
as follows.
CKE1
C/A
0
0
1
1
—
CKE0
0
1
—
—
P9 DDR
5
Pin function
0
P9
5
input
1
P9
5
output
—
SCK output
1
—
SCK output
1
—
SCK input
1
IRQ input
5
Bit C/A in SMR of SCI0, bits CKE0 and CKE1 in SCR, and bit P9 DDR select the pin function
4
as follows.
CKE1
0
1
C/A
0
1
—
CKE0
0
1
—
—
P9 DDR
4
Pin function
0
P9
4
input
1
P9
4
output
—
SCK output
0
—
SCK output
0
—
SCK input
0
IRQ input
4
Bit RE in SCR of SCI1, bit SMIF in SCMR, and bit P9 DDR select the pin function as follows.
3
SMIF
0
1
RE
0
1
—
P9 DDR
3
Pin function
0
P9 input
3
1
P9 output
3
—
RxD input
1
—
RxD input
1
Bit RE in SCR of SCI0, bit SMIF in SCMR, and bit P9 DDR select the pin function as follows.
2
SMIF
0
1
RE
0
1
—
P9 DDR
2
Pin function
0
P9 input
2
1
P9 output
2
—
RxD input
0
—
RxD input
0
Rev. 5.0, 09/04, page 288 of 978