NEC 78K0 Series User Manual page 33

(1) Port functions (2/2)
Function Name I/O
P40 to P43 I/O
P50 to P53 I/O
P60 I/O
P61
P62
P63
P70 to P77 I/O
P120 I/O
P121
P122
P123
P124
P130 Output
P140 I/O
P141
µ
Note PD78F0537D only
CHAPTER 2 PIN FUNCTIONS
Function
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.
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.
Port 6.
4-bit I/O port.
Output of P60 to P63 is N-ch open-drain output (6 V tolerance).
Input/output can be specified in 1-bit units.
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.
Port 12.
5-bit I/O port.
Input/output can be specified in 1-bit units.
Only for P120, use of an on-chip pull-up resistor can be
specified by a software setting.
Port 13.
1-bit output-only port.
Port 14.
2-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.
Preliminary User's Manual U17260EJ3V1UD
After Reset Alternate Function
−
Input port
−
Input port
Input port SCL0
SDA0
EXSCL0
−
Input port KR0 to KR7
Input port INTP0/EXLVI
Note
X1/OCD0A
X2/EXCLK/OCD0B
XT1
XT2/EXCLKS
−
Output port
Input port PCL/INTP6
BUZ/INTP7
Note
33