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PIC16F753 数据表(PDF) 166 Page - Microchip Technology |
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PIC16F753 数据表(HTML) 166 Page - Microchip Technology |
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166 / 230 page ![]() PIC16F753/HV753 DS40001709C-page 166 2013-2015 Microchip Technology Inc. FIGURE 19-10: WAKE-UP FROM SLEEP THROUGH INTERRUPT 19.8 Code Protection If the code protection bit(s) have not been programmed, the on-chip program memory can be read out using ICSP™ for verification purposes. 19.9 ID Locations Four memory locations (2000h-2003h) are designated as ID locations where the user can store checksum or other code identification numbers. These locations are not accessible during normal execution but are readable and writable during Program/Verify mode. Only the Least Significant seven bits of the ID locations are reported when using MPLAB® IDE. Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 CLKIN CLKOUT INT pin INTF flag (INTCON reg.) GIE bit (INTCON reg.) Instruction Flow PC Instruction Fetched Instruction Executed PC PC + 1 PC + 2 Inst(PC) = Sleep Inst(PC – 1) Inst(PC + 1) Sleep Processor in Sleep Interrupt Latency(3) Inst(PC + 2) Inst(PC + 1) Inst(0004h) Inst(0005h) Inst(0004h) Dummy Cycle PC + 2 0004h 0005h Dummy Cycle TIOSCST PC + 2 Note 1: HFINTOSC Oscillator mode assumed. 2: GIE = ‘1’ assumed. In this case after wake-up, the processor jumps to 0004h. If GIE = ‘0’, execution will continue in-line. Note: The entire Flash program memory will be erased when the code protection is turned off. See the “PIC16F753/HV753 Flash Memory Programming Specification” (DS41686) for more information. |
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