UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 280
UPD78F0988AGC-8BS
Manufacturer Part Number
UPD78F0988AGC-8BS
Description
Manufacturer
Renesas Electronics America
Datasheet
1.UPD78F0988AGC-8BS.pdf
(431 pages)
Specifications of UPD78F0988AGC-8BS
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INTyy is not acknowledged and multiple interrupt servicing is not performed. This interrupt (INTyy) is held pending
and is acknowledged after one instruction of the main servicing has been executed.
278
While INTxx is serviced, other interrupts are not enabled (the EI instruction has not been executed). Therefore,
PR = 0:
IE = 0:
Example 3. Multiple interrupt is not generated because interrupts not enabled
Higher priority level
Acknowledging interrupt request is disabled
INTxx
(PR = 0)
Figure 14-14. Multiple Interrupt Example (2/2)
Main servicing
1 Instruction
execution
CHAPTER 14 INTERRUPT FUNCTIONS
EI
User’s Manual U13029EJ7V1UD
IE = 0
INTyy
(PR = 0)
IE = 0
INTxx
servicing
RETI
INTyy
servicing
RETI
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