HD64F2357F20V Datasheet, PDF (55/1049 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-chip Microcomputer H8S Family / H8S/2300 Series

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 2-2. When EXR is invalid, it is not pushed onto the stack. For details, see section 4,
Exception Handling.
SP
Reserved
PC
(24 bits)
SP
*2
(SP )
EXR^*1
Reserved^*1*3
CCR
PC
(24 bits)
(a) Subroutine Branch
(b) Exception Handling
Notes: 1. When EXR is not used it is not stored on the stack.
2. SP when EXR is not used.
3. Ignored when returning.
Figure 2-2 Stack Structure in Advanced Mode
Rev.6.00 Oct.28.2004 page 25 of 1016
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