S3F9498 Datasheet, PDF (78/239 Pages) Samsung semiconductor – 8-BIT CMOS MICROCONTROLLER

S3C9498/F9498
INTERRUPT STRUCTURE
5
INTERRUPT STRUCTURE
OVERVIEW
The SAM88RCRI interrupt structure has two basic components: a vector, and sources. The number of interrupt
sources can be serviced through an interrupt vector which is assigned in ROM address 0000H.
VECTOR
0000H
0001H
SOURCES
S1
S2
S3
Sn
NOTES:
1. The SAM88RCRI interrupt has only one vector address (0000H-0001H).
2. The numbern of Sn value is expandable.
Figure 5-1. S3C9-Series Interrupt Type
INTERRUPT PROCESSING CONTROL POINTS
Interrupt processing can be controlled in two ways: either globally or specific interrupt level and source.
The system-level control points in the interrupt structure are therefore:
— Global interrupt enable and disable (by EI and DI instructions)
— Interrupt source enable and disable settings in the corresponding peripheral control register(s)
5-1