Datasheet

Section 2 CPU
Page 56 of 1434 R01UH0166EJ0600 Rev. 6.00
Mar 02, 2011
H8S/2633 Group, H8S/2633 F-ZTAT
TM
,
H8S/2633R F-ZTAT
TM
, H8S/2695
Stack Structure: In advanced mode, when the program counter (PC) is pushed onto the stack in a
subroutine call, and the PC, condition-code register (CCR), and extended control register (EXR)
are pushed onto the stack in exception handling, they are stored as shown in figure 2.5. When
EXR is invalid, it is not pushed onto the stack. For details, see section 4, Exception Handling.
(a) Subroutine Branch (b) Exception Handling
PC
(24 bits)
EXR
*1
Reserved
*1*3
CCR
PC
(24 bits)
SP
SP
Notes: 1.
2.
3.
When EXR is not used it is not stored on the stack.
SP when EXR is not used.
Ignored when returning.
(SP )
*2
Reserved
Figure 2.5 Stack Structure in Advanced Mode