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Section 3 Exception Handling
Rev. 6.00 Sep 12, 2006 page 75 of 526
REJ09B0326-0600
PC and CCR
saved to stack
SP (R7)
SP – 1
SP – 2
SP – 3
SP – 4
Stack area
SP + 4
SP + 3
SP + 2
SP + 1
SP (R7)
Even address
Prior to start of interrupt
exception handling
After completion of interrupt
exception handling
Legend:
PC
H
:
PC
L
:
CCR:
SP:
Upper 8 bits of program counter (PC)
Lower 8 bits of program counter (PC)
Condition code register
Stack pointer
Notes:
CCR
CCR
PC
H
PC
L
1.
2.
PC shows the address of the first instruction to be executed upon return from the interrupt
handling routine.
Register contents must always be saved and restored by word access, starting from
an even-numbered address.
Figure 3.4 Stack State after Completion of Interrupt Exception Handling
Figure 3.5 shows a typical interrupt sequence where the program area is in the on-chip ROM and
the stack area is in the on-chip RAM.
Summary of Contents for F-ZTAT H8/3642A Series
Page 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Page 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Page 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Page 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Page 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Page 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Page 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Page 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Page 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...