HD6413007F20 Datasheet, PDF (289/798 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

8. I/O Ports
Table 8.8 Port 8 Pin Functions
Pin
P8 /CS
4
0
Pin Functions and Selection Method
Bit P8 DDR selects the pin function as follows.
4
P8 DDR
0
4
Pin function
P8 input
4
1
CS output
0
P8₃/CS₁/IRQ₃/ADTRG Bit P8₃DDR selects the pin function as follows
P8 DDR
0
3
Pin function
P8₃ input
IRQ
3
input
ADTRG input
1
CS
1
output
P8₂/CS₂/IRQ₂
The DRAM interface settings by bits DRAS2 to DRAS0 in DRCRA, and
bit P8 DDR, select the pin function as follows.
2
DRAM interface
settings
(1) in table below
(2) in table below
P8 DDR
2
Pin function
0
P8₂ input
Note:
*
CS is output as RAS .
2
2
DRAM interface
setting
(1)
1
CS
2
output
IRQ
3
input
(2)
⎯
CS
2
output*
DRAS2
0
1
DRAS1
0
1
0
1
DRAS0
01010101
Rev.5.00 Sep. 12, 2007 Page 259 of 764
REJ09B0396-0500