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PIC16C925-S/CL датащи(PDF) 122 Page - Microchip Technology |
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PIC16C925-S/CL датащи(HTML) 122 Page - Microchip Technology |
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122 / 182 page ![]() PIC16C925/926 DS39544A-page 120 Preliminary 2001 Microchip Technology Inc. CLRWDT Clear Watchdog Timer Syntax: [ label ] CLRWDT Operands: None Operation: 00h → WDT 0 → WDT prescaler, 1 → TO 1 → PD Status Affected: TO, PD Encoding: 00 0000 0110 0100 Description: CLRWDT instruction resets the Watchdog Timer. It also resets the prescaler of the WDT. Status bits TO and PD are set. Words: 1 Cycles: 1 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode No Operation Process data Clear WDT Counter Example CLRWDT Before Instruction: WDT counter = ? After Instruction: WDT counter = 0x00 WDT prescaler = 0 TO =1 PD =1 COMF Complement f Syntax: [ label ] COMF f [,d] Operands: 0 ≤ f ≤ 127 d ∈ [0,1] Operation: (f) → (destination) Status Affected: Z Encoding: 00 1001 dfff ffff Description: The contents of register ’f’ are com- plemented. If ’d’ is 0, the result is stored in W. If ’d’ is 1, the result is stored back in register ’f’. Words: 1 Cycles: 1 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode Read register ’f’ Process data Write to destination Example COMF REG1,0 Before Instruction: REG1 = 0x13 After Instruction: REG1 = 0x13 W= 0xEC |
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