221
9.2
Port 1
9.2.1
Overview
Port 1 is an 8-bit I/O port. Port 1 pins also function as PPG output pins (PO15 to PO8), TPU I/O
pins (TCLKA, TCLKB, TCLKC, TCLKD, TIOCA0, TIOCB0, TIOCC0, TIOCD0, TIOCA1,
TIOCB1, TIOCA2, and TIOCB2), and external interrupt pins (
IRQ0
and
IRQ1
). Port 1 pin
functions change according to the operating mode.
Figure 9-1 shows the port 1 pin configuration.
P17 (I/O) / PO15 (output) / TIOCB2 (I/O) / TCLKD (input)
P16 (I/O) / PO14 (output) / TIOCA2 (I/O) /
IRQ1
(input)
P15 (I/O) / PO13 (output) / TIOCB1 (I/O) / TCLKC (input)
P14 (I/O) / PO12 (output) / TIOCA1 (I/O) /
IRQ0
(input)
P13 (I/O) / PO11 (output) / TIOCD0 (I/O) / TCLKB (input)
P12 (I/O) / PO10 (output) / TIOCC0 (I/O) / TCLKA (input)
P11 (I/O) / PO9 (output) / TIOCB0 (I/O)
P10 (I/O) / PO8 (output) / TIOCA0 (I/O)
Port 1
Figure 9-1 Port 1 Pin Functions
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