hd64338342hw Renesas Electronics Corporation., hd64338342hw Datasheet - Page 147

• Manufacturer Part Number: hd64338342hw
• Description: Renesas 8-bit Single-chip Microcomputer H8 Family/h8/300l Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Figure 3.5 shows a typical interrupt sequence.
SP – 4
SP – 3
SP – 2
SP – 1
SP (R7)
Legend:
PC
PC
CCR:
SP:
Notes:
H
L
Figure 3.4 Stack State after Completion of Interrupt Exception Handling
:
:
2.
*
1.
Upper 8 bits of program counter (PC)
Lower 8 bits of program counter (PC)
Condition code register
Stack pointer
Register contents must always be saved and restored by word access,
starting from an even-numbered address.
Ignored on return.
Prior to start of interrupt
PC shows the address of the first instruction to be executed upon
return from the interrupt handling routine.
exception handling
Stack area
saved to stack
PC and CCR
SP (R7)
SP + 1
SP + 2
SP + 3
SP + 4
Rev. 6.00 Aug 04, 2006 page 111 of 680
After completion of interrupt
exception handling
CCR
CCR
Section 3 Exception Handling
PC
PC
H
L
*
REJ09B0145-0600
Even address