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SN8P1602A Datasheet(PDF) 27 Page - SONiX Technology Company |
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SN8P1602A Datasheet(HTML) 27 Page - SONiX Technology Company |
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27 / 76 page  SN8P1602B 8-Bit Micro-Controller SONiX TECHNOLOGY CO., LTD Page 27 Version 1.1 STACK OPERATIONS OVERVIEW The stack buffer of SN8P1602B has 4-level. These buffers are designed to push and pop up program counter’s (PC) data when interrupt service routine is executed. The STKP register is a pointer designed to point active level in order to push or pop up data from stack buffer. The STKnH and STKnL are the stack buffers to store program counter (PC) data. STKP=0 STKP=1 STKP=2 STKP=3 STKP- 1 STKP+1 CALL/ interrupt RET/ RETI STKP PCH PCL STKP STK0H STK1H STK2H STK3H STK0L STK1L STK2L STK3L STKP=0 STKP=1 STKP=2 STKP=3 STKP=0 STKP=1 STKP=2 STKP=3 STKP- 1 STKP+1 CALL/ interrupt RET/ RETI STKP- 1 STKP+1 STKP- 1 STKP- 1 STKP+1 CALL/ interrupt RET/ RETI STKP STKP PCH PCL PCH PCH PCL PCL STKP STKP STK0H STK1H STK2H STK3H STK0L STK1L STK2L STK3L |
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