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CHAPTER 4 PORT FUNCTIONS
User’s Manual U16228EJ2V0UD
91
Table 4-2. Port Functions (1/2)
Pin Name
I/O
Function
After Reset
Alternate Function
P00
TI000
P01
TI010/TO00
P02
SO11
Note
P03
SI11
Note
P04
SCK11
Note
P05
SSI11
Note
/TI001
Note
P06
I/O
Port 0.
7-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input
TI011
Note
/TO01
Note
P10
SCK10/TxD0
P11
SI10/RxD0
P12
SO10
P13
TxD6
P14
RxD6
P15
TOH0
P16
TOH1/INTP5
P17
I/O
Port 1.
8-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input
TI50/TO50
P20 to P27
Input
Port 2.
8-bit input-only port.
Input
ANI0 to ANI7
P30 to P32
INTP1 to INTP3
P33
I/O
Port 3.
4-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input
INTP4/TI51/TO51
P40 to P43
I/O
Port 4.
4-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input
P50 to P53
I/O
Port 5.
4-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input
P60 to P63
I/O
Port 6.
4-bit I/O port (N-ch open drain).
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a mask
option only for mask ROM versions.
Input
P70 to P77
I/O
Port 7.
8-bit I/O port.
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Input
KR0 to KR7
Note
SO11, SI11, SCK11, SSI11, TI001, TI011, and TO01 are available only in the
μ
PD780133, 780134, 78F0134,
780136, 780138, and 78F0138.