메인 콘텐츠로 건너뛰기
Knowledgebase
Home
Renesas Korea

Interrupt cannot be generated. What would be the possible reason?

Latest Updated:03/25/2009

Question:

Interrupt cannot be generated. What would be the possible reason?

Answer:

(1) Please confirm the setting of the interrupt priority.
It is necessary to set the interrupt priority corresponding to each interrupt factor according to interrupt priority level set register (IPR). When the priority level of interrupt set here is the same or lower level as the priority level set to interrupt mask level bit (I3~I0), the interrupt is ignored.

(2)Please confirm whether the on-chip peripheral module that is an interrupt factor is set to a module standby.
The initial value of the main on-chip peripheral function is set in the state of the module standby.
In the state of module standby, interrupt is not generated because on-chip peripheral function is not operated.

Suitable Products
SH7206
SH7124, SH7125
SH7146, SH7149
SH7144, SH7145
SH7083, SH7084, SH7085, SH7086
SH7047, SH7049, SH7105, SH7107, SH7109
SH7046, SH7148, SH7101, SH7048, SH7104, SH7106, SH7108