h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 84

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 2 CPU
Stack Structure: When the program counter (PC) is pushed onto the stack in a subroutine call,
and the PC and condition-code register (CCR) are pushed onto the stack in exception handling,
they are stored as shown in figure 2.3. The extended control register (EXR) is not pushed onto the
stack. For details, see section 4, Exception Handling.
SP
CCR
SP
PC
(16 bits)
CCR *
PC
(16 bits)
(a) Subroutine Branch
(b) Exception Handling
Note: * Ignored when returning.
Figure 2.3 Stack Structure in Normal Mode
(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.
Rev. 4.00 Jun 06, 2006 page 30 of 1004
REJ09B0301-0400