2007-09-19 04:15 AM
ST10F27x: fast external interrupts serve without set bit CCxIE?
2007-09-19 04:15 AM
How must i understand the following statement in the UM0407, page 113:
''EXxIN inputs are normally sampled interrupt inputs. However, the interrupt handler circuitry uses them as level-sensitive inputs. An EXxIN (x = 7...0) Interrupt Enable bit (bit CCxIE in respective CCxIC register) needs not to be set to properly serve the interrupt request (or exiting from Power Down mode).'' Will the fast external interrupts always served as soon as IEN = 1 (regardless of the associated CCxIE bit)?