Rev. 1.0, 09/01, page 491 of 904
10.16.4
Pin Functions
Port H pins also function as bus control signal I/Os and interrupt inputs. The correspondence
between the register specification and the pin functions is shown below.
PH3/
&6
:
&6
:
&6
:
&6
:
/
2(
2(
2(
2(
/CKE*
2
/(
,54
:
,54
:
,54
:
,54
:
)
The pin function is switched as shown below according to the operating mode, bit EXPE, bit OEE,
bit OES, bit CS7E, and bit PH3DDR.
Operating
mode
1, 2, 4, 5, 6
7
EXPE
—
0
1
2
EE
0
1
—
0
1
2
ES
—
0
1
—
0
1
Area
2 to 5
—
—
Normal
space
or
DRAM
space
syn-
chronous
DRAM
space
*
2
—
—
—
Normal
space
or
DRAM
space
syn-
chronous
DRAM
space
*
2
CS7E
0
1
0
1
—
—
—
0
1
0
1
—
—
PH3DDR
0
1
0
1
0
1
0
1
—
—
0
1
0
1
0
1
0
1
0
1
—
—
PH3
input
PH3
output
PH3
input
&6
:
output
PH3
input
PH3
output
PH3
input
&6
:
output
2(
output
CKE
*
2
output
PH3
input
PH3
output
PH3
input
PH3
output
PH3
input
&6
:
output
PH3
input
PH3
output
PH3
input
&6
:
output
2(
output
CKE
*
2
output
Pin
function
,54
:
input
*
1
Notes: 1.
,54
:
interrupt input pin when bit ITS7 is set to 1 in ITSR
2. Not used in H8S/2378 series.
PH2/
&6
9
&6
9
&6
9
&6
9
/(
,54
9
,54
9
,54
9
,54
9
)
The pin function is switched as shown below according to the operating mode, bit EXPE, bit
CS6E, and bit PH2DDR.
Operating
mode
1, 2, 4, 5, 6
7
EXPE
—
0
1
CS6E
0
1
—
0
1
PH2DDR
0
1
0
1
0
1
0
1
0
1
PH2
input
PH2
output
PH2
input
&6
9
output
PH2
input
PH2
output
PH2
input
PH2
output
PH2
input
&6
9
output
Pin function
,54
9
interrupt input
*
Note:
,54
9
interrupt input pin when bit ITS6 is set to 1 in ITSR.
Содержание H8S/2376 F-ZTAT
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