Description Of Pin Functions; P00 To P06 (Port 0) - NEC 78K0 Series 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 port 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 of 16-bit timer/event counters 00 and 01.
Note
(d) SI11
This is a serial data input pin of serial interface CSI11.
Note
(e) SO11
This is a serial data output pin of serial interface CSI11.
Note
(f) SCK11
This is a serial clock I/O pin of serial interface CSI11.
Note
(g) SSI11
This is a chip select input pin of serial interface CSI11.
µ
Note PD78F0534, 78F0535, 78F0536, 78F0537, and 78F0537D only
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CHAPTER 2 PIN FUNCTIONS
Preliminary User's Manual U17260EJ3V1UD