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ISR—IRQ Status Register
Downloaded from
Elcodis.com
electronic components distributor
—
—
Initial value
0
0
Read/Write
—
—
IRQ to IRQ flags
4
0
Bits 4 to 0
IRQ4F to IRQ0F
0
1
Note:
*
Only 0 can be written, to clear the flag.
H'F6
—
IRQ4F
IRQ3F
IRQ2F
0
0
0
—
R/(W) *
R/(W) *
Setting and Clearing Conditions
[Clearing conditions]
Read IRQnF when IRQnF = 1, then write 0 in IRQnF.
IRQn
IRQnSC = 0,
input is high, and interrupt exception
handling is carried out.
IRQnSC = 1 and IRQn interrupt exception handling is
carried out.
[Setting conditions]
IRQn
IRQnSC = 0 and
input is low.
IRQn
IRQnSC = 1 and
input changes from high to low.
530
Interrupt controller
IRQ1F
IRQ0F
0
0
0
R/(W) *
R/(W) *
R/(W) *
(n = 4 to 0)
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