HD6413258F10V Datasheet, PDF (85/301 Pages) Renesas Technology Corp – Regarding the change of names mentioned in the document, such as Hitachi Electric and Hitachi XX, to Renesas Technology Corp.

PCH
SP
PCL
SP
R1L
H'FEFC
PCL
H'FEFD
SP
H'FEFF
BSR instruction
MOV.B R1L, @–R7
H'FEFF set in SP
PC is improperly stored
beyond top of stack
PC His lost
PCH : Upper byte of program counter
PCL : Lower byte of program counter
R1L : General register
SP : Stack pointer
Figure 4-7. Example of Damage Caused by Setting an Odd Address in R7
Although the CCR consists of only one byte, it is treated as word data when pushed on the stack. In
the hardware interrupt exception-handling sequence, two identical CCR bytes are_Fip_gu_us_reh_.e₄d_-7onto the
stack to make a complete word. When popped from the stack by an RTE instruction, the CCR is
loaded from the byte stored at the even address. The byte stored at the odd address is ignored.
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