Precautions - Epson S1C17001 Technical Manual

6.8 Precautions

• To prevent the recurrence of interrupts due to the same interrupt factor, always reset the interrupt flag before per-
mitting interrupts, resetting PSR, or executing the reti command.
• The S1C17001 interrupts listed below are in level trigger mode.
- P0 port interrupt
- P1 port interrupt
- Stopwatch timer interrupt
- Clock timer interrupt
- 8-bit OSC1 timer interrupt
- PWM & capture timer interrupt
Make sure all EITGx bits within the ITC_ELVx registers (0x4306 to 0x430c) have been set to 1 (level trigger
mode).
The interrupt flag within peripheral modules must be reset (to 1) within the interrupt processing routine rather
than EIFTx. For more information on interrupt flags for resetting, refer to the peripheral module description.
S1C17001 TECHNICAL MANUAL
EPSON
6 INITERRUPT CONTROLLER
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