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8. I/O Ports
Rev.3.00 Jul. 19, 2007 page 187 of 532
REJ09B0397-0300
8.3.3 Pin
Functions
H8/3857 Group port 2 pin functions are shown in figure 8.6 (a), and H8/3854 Group port 2 pin
functions in figure 8.6 (b).
Table 8.6 (a)
H8/3857 Group Port 2 Pin Functions
Pin
Pin Functions and Selection Method
P2
7
to P2
2
Input or output is selected as follows by the bit settings in PCR2.
PCR2n
0
1
Pin
function
P2
n
input pin
P2
n
output pin
Note:
n = 7 to 2
P2
1
/UD
The pin function depends on bit UD in PMR2 and bit PCR2
1
in PCR2.
UD
0
1
PCR2
1
0
1
*
Pin
function
P2
1
input pin P2
1
output pin
UD input pin
P2
0
/
IRQ
4
/
ADTRG
The pin function depends on bit IRQ4 in PMR2, bit TRGE in AMR, and bit
PCR2
0
in PCR2.
IRQ4
0
1
PCR2
0
0
1
*
TRGE
*
0
1
Pin
function
P2
0
input pin P2
0
output pin
IRQ
4
input pin
IRQ
4
/
ADTRG
input pin
Note: When using as
ADTRG
input pin, clear bit IEN4 in IENR1 to 0, disabling
IRQ
4
interrupts.
Legend:
*
Don't care
Содержание F-ZTAT H8 Series
Страница 6: ...Rev 3 00 Jul 19 2007 page iv of xxiv REJ09B0397 0300...
Страница 194: ...7 RAM Rev 3 00 Jul 19 2007 page 168 of 532 REJ09B0397 0300...
Страница 234: ...8 I O Ports Rev 3 00 Jul 19 2007 page 208 of 532 REJ09B0397 0300...
Страница 274: ...9 Timers Rev 3 00 Jul 19 2007 page 248 of 532 REJ09B0397 0300...
Страница 352: ...12 A D Converter Rev 3 00 Jul 19 2007 page 326 of 532 REJ09B0397 0300...
Страница 466: ...16 Electrical Characteristics H8 3854 Group Rev 3 00 Jul 19 2007 page 440 of 532 REJ09B0397 0300...
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