CHAPTER 2 PIN FUNCTIONS
Preliminary User’s Manual U19014EJ1V0UD
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2.2.2 P10 to P17 (port 1)
P10 to P17 function as an 8-bit I/O port. These pins also function as pins for serial interface data I/O, clock I/O,
and timer I/O.
The following operation modes can be specified in 1-bit units.
(1) Port
mode
P10 to P17 function as an 8-bit I/O port. P10 to P17 can be set to input or output port in 1-bit units using port
mode register 1 (PM1). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 1
(PU1).
(2) Control
mode
P10 to P17 function as serial interface data I/O, clock I/O, and timer I/O.
(a) SI10
This is a serial data input pin of serial interface CSI10.
(b) SO10
This is a serial data output pin of serial interface CSI10.
(c) SCK10
This is a serial clock I/O pin of serial interface CSI10.
(d) RxD6
This is a serial data input pin of serial interface UART6.
(e) TxD6
This is a serial data output pin of serial interface UART6.
(f) TI50
This is the pin for inputting an external count clock to 8-bit timer/event counter 50.
(g) TO50
This is a timer output pin of 8-it timer/event counter 50.
(h) TOH1
This is the timer output pin of 8-bit timer H1.
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