MEMORY MAPKS57C2308/P2308/C2316/P2316

IMOD0 — External Interrupt 0 (INT0) Mode Register

FB4H

Bit

Identifier

RESET Value

Read/Write

Bit Addressing

.3

3

2

1

0

.3

"0"

.1

.0

 

 

 

 

0

0

0

0

W

W

W

W

4

4

4

4

Interrupt Sampling Clock Selection Bit

0Select CPU clock as a sampling clock

1Select 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

 

 

 

 

 

4-14

Page 56
Image 56
Samsung KS57C2308 manual IMOD0 External Interrupt 0 INT0 Mode Register, FB4H, External Interrupt Mode Control Bits