The 8051 Microcontroller and Embedded

Department of Computer Scien

ce and Information Engineering

National Cheng Kung University, TAIWAN
HANEL
EXTERNAL HARDWARE INTERRUPTS(cont’)

IE0(TCON.1)

INT0(Pin 3.2)

Edge-triggered

0 IT0 1

0003

Level-triggered

Activation of INT0 Activation of INT1

IE1(TCON.3)

INT1(Pin 3.3)

Edge-triggered

0 IT1 1

0013

Level-triggered