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CHAPTER 7 INTERRUPT AND TEST FUNCTIONS
208 User’s Manual U10676EJ3V0UM
(4) Executing pending interrupt - interrupt input while interrupts are disabled -
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EI IE0
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EI
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EI IET0
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<2>
<1>
INT0
<4>
<lNT0 servicing program>
<3>
INTT0
RETI
<lNTT0 servicing program>
RETI
<Main program>
<1> The request flag is held pending even if INT0 is set while the interrupts are disabled.
<2> INT0 servicing program is started when the interrupts are enabled by the EI instruction.
<3> Same as <1>.
<4> INTT0 servicing program is started when the pending INTT0 is enabled.