HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 150

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

Section 5 Interrupt Controller
Figure 5.3 shows the timing of setting IRQnF.
The vector numbers for IRQ7 to IRQ0 interrupt exception handling are 23 to 16.
Detection of IRQ7 to IRQ0 interrupts does not depend on whether the relevant pin has been set for
input or output. Therefore, when a pin is used as an external interrupt input pin, do not clear the
corresponding DDR bit to 0 and use the pin as an I/O pin for another function. The pins that can
be used for IRQ4 to IRQ7 interrupt input can be switched by means of the IRQPAS bit in SYSCR.
Rev.6.00 Sep. 27, 2007 Page 120 of 1268
REJ09B0220-0600
input pin
IRQnF
IRQn input
IRQn
Note: n = 7 to 0
φ
Figure 5.2 Block Diagram of Interrupts IRQ7 to IRQ0
IRQnSCA, IRQnSCB
detection circuit
Edge/level
Figure 5.3 Timing of Setting IRQnF
Clear signal
S
R
IRQnF
Q
IRQnE
IRQn interrupt
request