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193
CHAPTER 12 SERIAL INTERFACE
User’s Manual U15017EJ2V0UD
Table 12-2. Serial Interface Operation Mode Settings
(1) Operation stopped mode
(a) P25 to P27
ASIM0
CSIM0
PM25 P25 PM26 P26 PM27 P27
First
Bit
Shift
P25/SI0/RxD0
Clock Pin Function
P26/SO0/TxD0
P27/SCK0/ASCK0
Pin Function
TXE0 RXE0 CSIE0 SCL01 SCL00
Pin Function
0
0
0
×
×
×
Note 1
×
Note 1
×
Note 1
×
Note 1
×
Note 1
×
Note 1
P25
P26
P27
Other than above
Setting prohibited
(b) P60 to P62, P55 to P57
ASIM0
CSIM1
CSIM2
PM60 P60 PM61 P61 PM62 P62
PM55
P55
PM56
First
Bit
Shift
Clock
P60/SI1
P55/SI2
Pin Function
P61/SO1
P56/SO2
Pin Function
P62/SCK1
P57/SCK2
Pin Function
P56
PM57
P57
TXE0 RXE0 CSIE1 SCL11 SCL10
CSIM2 SCL21 SCL20
×
×
0
×
×
×
Note 1
×
Note 1
×
Note 1
×
Note 1
×
Note 1
×
Note 1
P60
P55
P61
P56
P62
P57
Other than above
Setting prohibited
(2) 3-wire serial I/O mode
(a) SI0, SO0, SCK0
ASIM0
CSIM0
PM25 P25 PM26 P26 PM27 P27
First
Bit
Shift
P25/SI0/RxD0
Clock Pin Function
P26/SO0/TxD0
P27/SCK0/ASCK0
Pin Function
TXE0 RXE0 CSIE0 SCL01 SCL00
Pin Function
0
0
1
0
0
1
Note 2
×
Note 2
0
0
1
×
MSB
External
SI0
Note 2
SO0
SCK0 input
clock
(CMOS output)
Note 3
Note 3
0
0
Interna
l
clock
SCK0 output
Other than above
Setting prohibited
(b) SI1, SO1, SCK1
ASIM0
CSIM1
PM60 P60 PM61 P61 PM62 P62
First
Bit
Shift
Clock Pin Function
P60/SI1
P60/SO1
Pin Function
P62/SCK1
Pin Function
TXE0 RXE0 CSIE1 SCL11 SCL10
×
×
1
0
0
1
Note 2
×
Note 2
0
0
1
×
MSB
External
SI1
Note 2
SO1
SCK1 input
clock
(CMOS output)
Note 3
Note 3
0
0
Interna
l
clock
SCK1 output
Other than above
Setting prohibited
(c) SI2, SO2, SCK2
ASIM0
CSIM2
PM55 P55 PM56 P56 PM57 P57
First
Bit
Shift
Clock Pin Function
P55/SI2
P56/SO2
Pin Function
P57/SCK2
Pin Function
TXE0 RXE0 CSIE2 SCL21 SCL20
×
×
1
0
0
1
Note 2
×
Note 2
1
0
1
×
MSB
External
SI2
Note 2
SO2
SCK2 input
clock
(CMOS output)
Note 3
Note 3
0
Interna
l
clock
SCK2 output
Other than above
Setting prohibited
Notes 1.
These pins can be used for port functions.
2.
When only transmission is used, these pins can be used as P25, P60, P55 (CMOS I/O).
3.
Refer to serial operation mode registers 0, 1, and 2 (CSIM0, CSIM1, and CSIM2).
Remark
×
: don’t care