upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 720

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

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Restoration
Restoration from a debug trap is executed with the DBRET instruction.
With the DBRET instruction, the CPU performs the following steps and transfers control to the
address of the restored PC.
<1> The restored PC and PSW are read from DBPC and DBPSW.
<2> Control is transferred to the fetched address of the restored PC and PSW.
Figure 17-31 shows the processing format for restoration from a debug trap.
Figure 17-31: Processing Format of Restoration from Debug Trap
Chapter 17 Interrupt/Exception Processing Function
User’s Manual U16702EE3V2UD00
Jump to address of restored PC
PC
PSW
DBRET instruction
DBPC
DBPSW