HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 430

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9 I/O Ports
Bit 2—LWR Output Disable (LWROD): Enables or disables LWR output.
Bit 2
LWROD
0
1
Bit 1—IRQ Port Switching Select (IRQPAS): Selects switching of input pins for IRQ
IRQ
Bit 1
IRQPAS
0
1
Bit 0—RAM Enable (RAME): Enables or disables on-chip RAM. The RAME bit is initialized
when the reset state is released. It is not initialized in software standby mode.
Bit 0
RAME
0
1
9.8.3
Port A pins function as address outputs, interrupt input pins (IRQ
pin functions are shown in table 9.14.
Rev.6.00 Sep. 27, 2007 Page 400 of 1268
REJ09B0220-0600
4
to IRQ
Pin Functions
7
input is always performed from one of the ports.
Description
PF
PF
Description
PA
P5
Description
On-chip RAM disabled
On-chip RAM enabled
0
3
3
4
to P5
is designated as LWR output pin
is designated as I/O port, and does not function as LWR output pin
to PA
3
7
used for IRQ
used for IRQ
4
4
to IRQ
to IRQ
7
7
input
input
4
to IRQ
7
), and I/O ports. Port A
(Initial value)
(Initial value)
(Initial value)
4
to IRQ
7
.