Description Of Pin Functions; P00 And P01 (Port 0) - NEC 78K0 User Manual

2.2 Description of Pin Functions

2.2.1 P00 and P01 (port 0)

P00 and P01 function as a 2-bit I/O port. These pins also function as timer I/O.
The following operation modes can be specified in 1-bit units.
(1) Port mode
P00 and P01 function as a 2-bit I/O port. P00 and P01 can be set to input or output in 1-bit units using port mode
register 0 (PM0). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 0 (PU0).
(2) Control mode
P00 and P01 function as timer I/O.
(a) TI000
This is the pin for inputting an external count clock to 16-bit timer/event counter 00 and is also for inputting a
capture trigger signal to the capture registers (CR000 or CR001) of 16-bit timer/event counter 00.
(b) TI010
This is the pin for inputting a capture trigger signal to the capture register (CR000) of 16-bit timer/event
counter 00.
(c) TO00
This is a timer output pin.
CHAPTER 2 PIN FUNCTIONS
User's Manual U16227EJ2V0UD
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