CHAPTER 4 PORT FUNCTIONS
User’s Manual U16896EJ2V0UD
95
(5) Port 9 function control register (PFC9)
Caution When port 9 is specified as an alternate function by the PMC9.PMC9n bit with the PFC9n bit
maintaining the initial value (0), output becomes undefined. Therefore, to specify port 9 as
alternate function 2, set the PFC9n bit to 1 first and then set the PMC9n bit to 1 (n = 0, 1, 6 to
9, 13 to 15).
PFC9 (PFC9H
Note
)
INTP6 input
PFC915
1
Specification of alternate-function pin of P915 pin
INTP5 input
PFC914
1
Specification of alternate-function pin of P914 pin
INTP4 input
PFC913
1
Specification of alternate-function pin of P913 pin
After reset: 0000H R/W Address: PFC9 FFFFF472H,
PFC9L FFFFF472H, PFC9H FFFFF473H
PFC97
PFC96
0
0
0
0
PFC91
PFC90
PFC915
PFC914
PFC913
0
0
0
PFC99
PFC98
8
9
10
11
12
13
14
15
SCK01 I/O
PFC99
1
Specification of alternate-function pin of P99 pin
SO01 output
PFC98
1
Specification of alternate-function pin of P98 pin
(PFC9L)
SI01 input
PFC97
1
Specification of alternate-function pin of P97 pin
TO51 output
PFC96
1
Specification of alternate-function pin of P96 pin
RXD1 input
PFC91
1
Specification of alternate-function pin of P91 pin
TXD1 output
PFC90
1
Specification of alternate-function pin of P90 pin
Note
When reading from or writing to bits 8 to 15 of the PFC9 register in 8-bit or 1-bit units,
specify these bits as bits 0 to 7 of the PFC9H register.
Remark
The PFC9 register can be read or written in 16-bit units.
However, when the higher 8 bits and the lower 8 bits of the PFC9 register are used as
the PFC9H register and as the PFC9L register, respectively, these registers can be
read or written in 8-bit or 1-bit units.
Содержание ?PD703302
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