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UPD17062 Datasheet(PDF) 126 Page - Renesas Technology Corp

Part # UPD17062
Description  MOS INTEGRATED CIRCUIT
PDF  298 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

UPD17062 Datasheet(HTML) 126 Page - Renesas Technology Corp

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µPD17062
11.9
MULTIPLE INTERRUPTS
The multiple interrupt function is used to process interrupt C or D while another interrupt from source A
or B is being processed as shown in Fig. 11-6.
The interrupt depth at this time is called the interrupt level.
Note the following regarding the multiple interrupt function.
(1) Interrupt source priorities
(2) Interrupt level restriction by an interrupt stack
(3) Interrupt level restriction by the address stack register
(4) System or control register saving
See Sections 11.9.1 to 11.9.4 for details.
Fig. 11-6
Example of Multiple Interrupts
MAIN
BD
A
B
C
Interrupt level 2
Main routine
Interrupt level 1



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