Datasheet

Section 9 I/O Ports
Rev.6.00 Sep. 27, 2007 Page 352 of 1268
REJ09B0220-0600
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 (PO
15
to PO
8
), TPU I/O
pins (TCLKA, TCLKB, TCLKC, TCLKD, TIOCA
0
, TIOCB
0
, TIOCC
0
, TIOCD
0
, TIOCA
1
,
TIOCB
1
, TIOCA
2
, and TIOCB
2
), and DMAC
*
output pins (DACK
0
and DACK
1
). Port 1 pin
functions are the same in all operating modes. Port 1 uses Schmitt-triggered input.
Figure 9.1 shows the port 1 pin configuration.
Note: * Not supported in the H8S/2321.
P1
7
(I/O) / PO
15
(output) / TIOCB
2
(I/O) / TCLKD (input)
P1
6
(I/O) / PO
14
(output) / TIOCA
2
(I/O)
P1
5
(I/O) / PO
13
(output) / TIOCB
1
(I/O) / TCLKC (input)
P1
4
(I/O) / PO
12
(output) / TIOCA
1
(I/O)
P1
3
(I/O) / PO
11
(output) / TIOCD
0
(I/O) / TCLKB (input)
P1
2
(I/O) / PO
10
(output) / TIOCC
0
(I/O) / TCLKA (input)
P1
1
(I/O) / PO
9
(output) / TIOCB
0
(I/O) / DACK
1
* (output)
P1
0
(I/O) / PO
8
(output) / TIOCA
0
(I/O) / DACK
0
* (output)
Port 1
Port 1 pins
Note: * The DACK
1
and DACK
0
pin functions are not supported in the H8S/2321.
Figure 9.1 Port 1 Pin Functions