INTRODUCTION TO MICROPEOCESSOR
MODEL OF MICROPROCESSOR
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
enable or disable external interrupts
|
|
|
enable or disable internal interrupts
|
|
|
enable or disable all the interrupts
|
|
|
none of the mentioned
|
Detailed explanation-1: -Using EA bit, all the interrupts can be enabled or disabled. Using the individual respective bit, the respective interrupt can be enabled or disabled.
Detailed explanation-2: -8051 architecture handles 5 interrupt sources, out of which two are internal (Timer Interrupts), two are external and one is a serial interrupt. Each of these interrupts has its interrupt vector address. The highest priority interrupt in 8051 Microcontroller is the Reset, with vector address 0x0000.
Detailed explanation-3: -External Interrupt. The external interrupts of 8051 are INT0and. INT1 These interrupts can be programmed to either edge-triggered or level triggered. The TCON register can be used top rogram external interrupts to edge or level triggered.