Hitachi H8/3048 Hardware Manual page 283

Table 9-14 Port 8 Pin Functions in Modes 1 to 6
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Pin Pin Functions and Selection Method
P8 /CS Bit P8
4 0
P8
4
Pin function
P8 /CS /IRQ Bit P8
3 1 3
P8
3
Pin function
P8 /CS /IRQ Bit P8
2 2 2
P8
2
Pin function
P8 /CS /IRQ Bit P8
1 3 1
P8
1
Pin function
P8 /RFSH/IRQ Bit RFSHE in RFSHCR and bit P8
0 0
RFSHE
P8
0
Pin function
DDR selects the pin function as follows
4
DDR
P8
DDR selects the pin function as follows
3
DDR
P8
DDR selects the pin function as follows
2
DDR
P8
DDR selects the pin function as follows
1
DDR
P8
DDR 0
P8 input
0
270
0
input
4
0
input
3
IRQ input
3
0
input
2
IRQ input
2
0
input
1
IRQ input
1
DDR select the pin function as follows
0
0
1
P8 output
0
IRQ input
0
1
CS output
0
1
CS output
1
1
CS output
2
1
CS output
3
1
—
RFSH output