Samsung KS57C2308 Manual page 185

KS57C2308/P2308/C2316/P2316
7
INTERRUPTS
OVERVIEW
The KS57C2308/C2316 interrupt control circuit has five functional components:
— Interrupt enable flags (IEx)
— Interrupt request flags (IRQx)
— Interrupt master enable register (IME)
— Interrupt priority register (IPR)
— Power-down release signal circuit
Three kinds of interrupts are supported:
— Internal interrupts generated by on-chip processes
— External interrupts generated by external peripheral devices
— Quasi-interrupts used for edge detection and as clock sources
Interrupt Type
External interrupts
Internal interrupts
Quasi-interrupts
Table 7-1. Interrupt Types and Corresponding Port Pin(s)
INT0, INT1, INT4
INTB, INTT0, INTS
INT2, KS0–KS7
INTW
Interrupt Name Corresponding Port Pins
P1.0, P1.1, P0.0
Not applicable
P1.2, P6.0–P7.3
Not applicable
INTERRUPTS
7-1