h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 134

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 5 Interrupt Controller
Figure 5.3 shows the timing of setting IRQnF.
The vector numbers for IRQ5 to IRQ0 interrupt exception handling are 21 to 16.
Detection of IRQ5 to IRQ0 interrupts does not depend on whether the relevant pin has been set for
input or output. However, when a pin is used as an external interrupt input pin, do not clear the
corresponding DDR to 0 and use the pin as an I/O pin for another function.
Rev. 5.00 Sep 22, 2005 page 108 of 1136
REJ09B0257-0500
input pin
IRQnF
IRQn input
IRQn
Note: n = 5 to 0
Figure 5.2 Block Diagram of Interrupts IRQ5 to IRQ0
IRQnSCA, IRQnSCB
detection circuit
Edge/level
Figure 5.3 Timing of Setting IRQnF
Clear signal
R
S
IRQnF
Q
IRQnE
IRQn interrupt
request