upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 223
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
(930 pages)
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Interrupt Controller (INTC)
Figure 5-12
Figure 5-13
(2)
Exception trap processing
Restore
Recovery from an exception trap is carried out by the DBRET instruction. By
executing the DBRET instruction, the CPU carries out the following processing
and controls the address of the restored PC.
(1) Loads the restored PC and PSW from DBPC and DBPSW.
(2) Transfers control to the address indicated by the restored PC and PSW.
Figure 5-13 illustrates the restore processing from an exception trap.
Restore processing from exception trap
Preliminary User’s Manual U17566EE1V2UM00
CPU processing
PC
PSW
Jump to address of restored PC
DBRET instruction
DBPC
DBPSW
PSW.NP
PSW.EP
PSW.ID
PC
Exception trap (ILGOP) occurs
Exception processing
DBPC
DBPSW
restored PC
PSW
1
1
1
00000060H
Chapter 5
223
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