HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 116

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

4. Exception Handling
4.5
Figure 4.5 shows the stack after completion of trap instruction exception handling and interrupt
exception handling.
Rev.4.00 Aug. 20, 2007 Page 72 of 638
REJ09B0395-0400
SP−4
SP−3
SP−2
SP−1
SP (ER7) →
SP−4
SP−3
SP−2
SP−1
SP (ER7) →
Legend:
PC
PC
PC
CCR:
SP:
Notes: PC indicates the address of the first instruction that will be executed after return.
E
H
L
:
:
:
Bits 23 to 16 of program counter (PC)
Bits 15 to 8 of program counter (PC)
Bits 7 to 0 of program counter (PC)
Condition code register
Stack pointer
Registers must be saved in word or longword size at even addresses.
* Ignored at return.
Stack Status after Exception Handling
Before exception handling
Before exception handling
Figure 4.5 Stack after Completion of Exception Handling
Stack area
Stack area
b. Advanced mode
Pushed on stack
a. Normal mode
Pushed on stack
SP (ER7)
SP+1
SP+2
SP+3
SP+4
SP (ER7)
SP+1
SP+2
SP+3
SP+4
→
→
After exception handling
After exception handling
CCR
CCR
CCR
PC
PC
PC
PC
PC
H
L
E
H
L
*
Even address
Even address