Fujitsu FR81S User Manual
CHAPTER 12: INTERRUPT CONTROL (INTERRUPT
CONTROLLER)
2. Features
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: INTERRUPT CONTROL (INTERRUPT CONTROLLER)
FUJITSU SEMICONDUCTOR CONFIDENTIAL
4
2. Features
This section explains features of the interrupt control (interrupt controller).
This module is composed of the following parts.
⋅
ICR register
⋅
Interrupt priority determination circuit
⋅
Interrupt level and interrupt vector generation circuit
This module has the following functions.
⋅
Detecting NMI requests
and peripheral interrupt requests
⋅
Priority determination (by level and interrupt vector)
⋅
Transmitting the interrupt level of the source with the highest priority to the CPU
⋅
Transmitting the interrupt vector number of the source with the highest priority to the CPU
⋅
Generating wakeup requests by NMI
/ interrupts that occur with a level other than "11111"
MB91520 Series
MN705-00010-1v0-E
465