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MEMORY MAP KS57C2308/P2308/C2316/P2316
4-14
IMOD0 — External Interrupt 0 (INT0) Mode Register FB4H
Bit
3 2 1 0
Identifier .3 "0" .1 .0
RESET Value
0 0 0 0
Read/Write
W W W W
Bit Addressing
4 4 4 4
.3 Interrupt Sampling Clock Selection Bit
0 Select CPU clock as a sampling clock
1 Select sampling clock frequency of the selected system clock (fxx/64)
.2 Bit 2
0 Always logic zero
.1–.0 External Interrupt Mode Control Bits
0 0 Interrupt requests are triggered by a rising signal edge
0 1 Interrupt requests are triggered by a falling signal edge
1 0 Interrupt requests are triggered by both rising and falling signal edges
1 1 Interrupt request flag (IRQ0) cannot be set to logic one