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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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7220 데이터시트(PDF) 32 Page - Renesas Technology Corp |
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7220 데이터시트(HTML) 32 Page - Renesas Technology Corp |
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32 / 303 page  2-5 7220 Group User’s Manual FUNCTIONAL DESCRIPTION 2.1 Central processing unit • • • • • • • • On-going routine (PCH) M(S) (S)–1 (S) (PCL) M(S) (S)–1 (S)–1 (PS) M(S) (S) (S) (PCH) M(S) (S)+1 (S) (PCL) M(S) (S)+1 (S)+1 (PS) M(S) (S) (S) Execute RTI Interrupt routine Execute JSR (PCH) M(S) (S)–1 (S) (PCL) M(S) (S)–1 (S) (PCH) M(S) (PCL) M(S) (S)+1 (S)+1 (S) (S) Execute RTS • • • Subroutine • • • • • • • • Interrupt request • • • (PCH) : Contents of high-order 8 bits of program counter : Contents of low-order 8 bits of program counter : Contents of processor status register : Contents of stack pointer : Memory : Instruction for returning from interrupt routine to main routine : Instruction for returning from subroutine to main routine M RTI RTS (PCL) (PS) (S) Fig. 2.1.3 Sequence of push onto/pop from a stack during interrupts and subroutine calls |
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