H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 401

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

9.8
9.8.1
Port A is an 8-bit I/O port. Port A pins also function as address bus outputs and interrupt input
pins (IRQ4 to IRQ7). The pin functions change according to the operating mode.
Port A has a built-in MOS input pull-up function that can be controlled by software (H8S/2351
only). Pins PA
Figure 9.7 shows the port A pin configuration.
Note: * Modes 2, 3, 6, and 7 only apply to the H8S/2351.
Pin functions in modes 4 and 5 *
PA
PA
PA
A
A
A
A
A
Port A
Overview
20
19
18
17
16
Port A
7
6
5
(output)
(output)
(output)
(output)
(output)
(input)/A
(input)/A
(input)/A
7
to PA
23
22
21
4
(output)/IRQ7 (input)
(output)/IRQ6 (input)
(output)/IRQ5 (input)
are schmitt-triggered inputs.
Port A pins
PA
PA
PA
PA
PA
PA
PA
PA
7
6
5
4
3
2
1
0
/A
/A
/A
/A
/A
/A
/A
/A
Figure 9.7 Port A Pin Functions
23
22
21
20
19
18
17
16
/IRQ7
/IRQ6
/IRQ5
/IRQ4
Pin functions in modes 1 to 3 and 7 *
PA
PA
PA
PA
PA
PA
PA
PA
Pin functions in mode 6 *
PA
PA
PA
PA
PA
PA
PA
PA
Rev. 3.00 Sep 15, 2006 page 367 of 988
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
(I/O)/IRQ7 (input)
(I/O)/IRQ6 (input)
(I/O)/IRQ5 (input)
(I/O)/IRQ4 (input)
(I/O)
(I/O)
(I/O)
(I/O)
(input)/A
(input)/A
(input)/A
(input)/A
(input)/A
(input)/A
(input)/A
(input)/A
23
22
21
20
19
18
17
16
(output)/IRQ7 (input)
(output)/IRQ6 (input)
(output)/IRQ5 (input)
(output)/IRQ4 (input)
(output)
(output)
(output)
(output)
Section 9 I/O Ports
REJ09B0330-0300