Outline Of Interrupt - Fujitsu MB90335 Series Hardware Manual

CHAPTER 3 INTERRUPT

3.1 Outline of Interrupt

3.1 Outline of Interrupt
2
F MC-16LX has the following five interrupt functions, which suspend the current
process when an event occurs and transfer control to a separately defined program.
• Hardware Interrupt
• Software interrupt
• Interrupts by extended intelligent I/O service (EI
• Interruption by μDMAC
• Exception processing
■ Type and Function of Interrupt
●
Hardware Interrupt
Transfers control to the user-defined interrupt handling program in response to an interrupt request from a
peripheral function.
Register file
F 2 MC-16LX CPU
Enable FF
Cause FF
46
Figure 3.1-1 Overview of Hardware Interrupts
Microcode
IR
Peripheral
AND
FUJITSU MICROELECTRONICS LIMITED
2
OS)
PS I ILM
Check Comparator
Interrupt
controller
MB90335 Series
PS : Processor status
I : Interrupt enable flag
ILM : Interrupt level mask register
IR : Instruction register
CM44-10137-6E