upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 718

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

(2)
718
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 17-29 illustrates the restore processing from an exception trap.
Figure 17-29: Restore Processing from Exception Trap
Chapter 17 Interrupt/Exception Processing Function
CPU processing
Figure 17-28: Exception Trap Processing
User’s Manual U16702EE3V2UD00
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