H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 406

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

Section 9 I/O Ports
Modes 4 and 5
In modes 4 and 5, the lower 5 bits of port A are designated as address outputs automatically, while
the upper 3 bits function as address outputs or input ports and interrupt input pins. Input or output
can be specified individually for the upper 3 bits. Setting one of bits PA7DDR to PA5DDR to 1
makes the corresponding port A pin an address output, while clearing the bit to 0 makes the pin an
input port.
Port A pin functions in modes 4 and 5 are shown in figure 9.9.
Rev. 3.00 Sep 15, 2006 page 372 of 988
REJ09B0330-0300
Port A
Figure 9.9 Port A Pin Functions (Modes 4 and 5)
When PADDR = 1
A
A
A
A
A
A
A
A
23
22
21
20
19
18
17
16
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
When PADDR = 0
PA
PA
PA
A
A
A
A
A
20
19
18
17
16
7
6
5
(output)
(output)
(output)
(output)
(output)
(input)/IRQ7 (input)
(input)/IRQ6 (input)
(input)/IRQ5 (input)