Interrupts Of External Interrupt Circuit - Fujitsu F2MC-8FX Hardware Manual

F2mc-8fx 8-bit microcontroller

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CHAPTER 18 EXTERNAL INTERRUPT CIRCUIT

Interrupts of External Interrupt Circuit

The interrupt sources for the external interrupt circuit include detection of the specified

edge of the signal inputted to an external interrupt pin.

Interrupt During Operation of External Interrupt Circuit

When the specified edge of external interrupt input is detected, the corresponding external interrupt request

flag bit (EIC: EIR0, EIR1) is set to "1". In this case, an interrupt request will be generated to the interrupt

controller, if the corresponding interrupt request enable bit is enabled (EIC: EIE0, EIE1=1). Write "0" to

the corresponding external interrupt request flag big to clear the interrupt request in the interrupt process

Registers and Vector Table Related to Interrupts of External Interrupt Circuit

Table 18.5-1 Registers and Vector Table Related to Interrupts of External Interrupt Circuit

"APPENDIX B Table of Interrupt Causes" describes the interrupt request numbers and vector tables for all

peripheral functions.

Interrupt level setting register

Vector table address

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Mb95170j series