HD6412350 Hitachi, HD6412350 Datasheet - Page 46

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

Stack Structure: 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 2-3. When EXR is invalid, it is
not pushed onto the stack. For details, see section 4, Exception Handling.
(2) Advanced Mode
Address Space: Linear access is provided to a 16-Mbyte maximum address space (architecturally
a maximum 16-Mbyte program area and a maximum 4-Gbyte data area, with a maximum of 4
Gbytes for program and data areas combined).
Extended Registers (En): The extended registers (E0 to E7) can be used as 16-bit registers, or as
the upper 16-bit segments of 32-bit registers or address registers.
Instruction Set: All instructions and addressing modes can be used.
26
SP
Notes: 1.
(a) Subroutine Branch
2.
3.
When EXR is not used it is not stored on the stack.
SP when EXR is not used.
Ignored when returning.
(16 bits)
Figure 2-3 Stack Structure in Normal Mode
PC
(SP
SP
*2
)
(b) Exception Handling
Reserved
(16 bits)
CCR
EXR
CCR
PC
*1
*3
*1,*3