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Bits 7, 6, 4, and 3: Reserved bits
Bits 7, 6, 4, and 3 are reserved; they are always read as 1 and cannot be modified.
Bit 5: P2
2
/SO
1
pin PMOS control (POF1)
This bit controls the on/off state of the P2
2
/SO
1
pin PMOS. This bit should be cleared to 0.
Bit 5
POF1
Description
0
CMOS setting
(initial value)
1
NMOS open-drain setting
Bit 2: P2
2
/SO
1
pin function switch (SO1)
This bit selects whether pin P2
2
/SO
1
is used as P2
2
or as SO
1
.
Bit 2
SO1
Description
0
Functions as P2
2
I/O pin
(initial value)
1
Functions as SO
1
output pin
Bit 1: P2
1
/SI
1
pin function switch (SI1)
This bit selects whether pin P2
1
/SI
1
is used as P2
1
or as SI
1
.
Bit 1
SI1
Description
0
Functions as P2
1
I/O pin
(initial value)
1
Functions as SI
1
input pin
Bit 0: P2
0
/SCK
1
pin function switch (SCK1)
This bit selects whether pin P2
0
/SCK
1
is used as P2
0
or as SCK
1
.
Bit 0
SCK1
Description
0
Functions as P2
0
I/O pin
(initial value)
1
Functions as SCK
1
I/O pin
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