NEC mPD789426 Series User Manual page 38

(1) Port pins (2/2)
Pin Name I/O
Note
P80, P81 I/O
Note
P90 to P97 I/O
Note µ PD789426, 789436 Subseries only
38
CHAPTER 2 PIN FUNCTIONS
Port 8.
2-bit I/O port.
Input/output can be specified in 1-bit units.
When used as an input port, an on-chip pull-up resistor can be
specified by means of pull-up resistor option register B8 (PUB8).
Port 9.
8-bit I/O port.
Input/output can be specified in 1-bit units.
When used as an input port, an on-chip pull-up resistor can be
specified by means of pull-up resistor option register B9 (PUB9).
User's Manual U15075EJ1V0UM00
Function After Reset Alternate Function
−
Input
−
Input