Description Of Pin Functions; P00 To P06 (Port 0) - NEC 78K0 User Manual

2.2

Description of Pin Functions

2.2.1

P00 to P06 (port 0)

P00 to P06 function as a 7-bit I/O port. These pins also function as timer I/O, serial interface data I/O, clock I/O,
and chip select input.
The following operation modes can be specified in 1-bit units.
(1) Port mode
P00 to P06 function as a 7-bit I/O port. P00 to P06 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 to P06 function as timer I/O, serial interface data I/O, clock I/O, and chip select input.
Note
(a) TI000, TI001
These are the pins for inputting an external count clock to 16-bit timer/event counters 00 and 01 and are also
for inputting a capture trigger signal to the capture registers (CR000, CR010 or CR001, CR011) of 16-bit
timer/event counters 00 and 01.
Note
(b) TI010, TI011
These are the pins for inputting a capture trigger signal to the capture register (CR000 or CR001) of 16-bit
timer/event counters 00 and 01.
Note
(c) TO00, TO01
These are timer output pins.
Note
(d) SI11
This is a serial interface serial data input pin.
Note
(e) SO11
This is a serial interface serial data output pin.
Note
(f) SCK11
This is a serial interface serial clock I/O pin.
Note
(g) SSI11
This is a serial interface chip select input pin.
Note SO11, SI11, SCK11, SSI11, TI001, TI011, and TO01 are available only in the
and 78F0148.
CHAPTER 2 PIN FUNCTIONS
*
User's Manual U15947EJ2V0UD
µ
PD780146, 780148,
51