HD6413007F20 Datasheet, PDF (293/798 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

8. I/O Ports
Bits 7 and 6 are reserved. They cannot be modified and are always read as 1.
Bit
7
⎯
Initial value
1
Read/Write
⎯
6
5
4
3
2
1
0
⎯
P9 ₅
P9 ₄
P9 ₃
P9 ₂
P9 ₁
P9 ₀
1
0
0
0
0
0
0
⎯
R/W
R/W
R/W
R/W
R/W R/W
Reserved bits
Port 9 data 5 to 0
These bits store data
for port 9 pins
P9DR is initialized to H'C0 by a reset and in hardware standby mode. In software standby mode it
retains its previous setting.
Table 8.10 Port 9 Pin Functions
Pin
P9₅/SCK₁/IRQ₅
P9 /SCK /IRQ
4
0
4
Pin Functions and Selection Method
Bit C/A in SMR of SCI1, bits CKE0 and CKE1 in SCR, and bit P9₅DDR
select the pin function as follows.
CKE1
C/A
0
0
1
1
⎯
CKE0
0
1
⎯
⎯
P9₅DDR
Pin function
0
P9
5
input
1
P9
5
output
⎯
SCK
1
output
IRQ
5
input
⎯
SCK
1
output
⎯
SCK
1
input
Bit C/A in SMR of SCI0, bits CKE0 and CKE1 in SCR, and bit P9 DDR
4
select the pin function as follows.
CKE1
C/A
0
0
1
1
⎯
CKE0
0
1
⎯
⎯
P9₄DDR
Pin function
0
P9₄
input
1
P9₄
output
⎯
SCK₀
output
IRQ
4
input
⎯
SCK₀
output
⎯
SCK₀
input
Rev.5.00 Sep. 12, 2007 Page 263 of 764
REJ09B0396-0500