h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 144

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 5 Interrupt Controller
Figure 5.4 shows the timing of IRQnF setting.
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, clear the
corresponding DDR bit to 0 and do not use the pin as an I/O pin for another function.
When IRQ6 pin is assigned as IRQ6 interrupt input pin, then clear the KMIMR6 bit to 0.
When the IRQ7 pin is used as the IRQ7 interrupt input pin, bits KMIMR15 to KMIMR8 and
WUEMRB7 to WUEMRB0 must all be set to 1. If any of these bits is cleared to 0, an IRQ7
interrupt input from the IRQ7 pin will be ignored.
Rev. 3.00 Jan 18, 2006 page 116 of 1044
REJ09B0280-0300
input pin
IRQnF
IRQn input
IRQn
Note: n: 7 to 0
Figure 5.3 Block Diagram of Interrupts IRQ7 to IRQ0
IRQnSCA, IRQnSCB
detection circuit
Edge/level
Figure 5.4 Timing of IRQnF Setting
Clear signal
S
R
IRQnF
Q
IRQnE
IRQn interrupt
request