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PIC16C71 Datasheet(PDF) 82 Page - Microchip Technology |
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PIC16C71 Datasheet(HTML) 82 Page - Microchip Technology |
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82 / 176 page ![]() PIC16C71X DS30272A-page 82 © 1997 Microchip Technology Inc. SLEEP Syntax: [ label ] SLEEP Operands: None Operation: 00h → WDT, 0 → WDT prescaler, 1 → TO, 0 → PD Status Affected: TO, PD Encoding: 00 0000 0110 0011 Description: The power-down status bit, PD is cleared. Time-out status bit, TO is set. Watchdog Timer and its pres- caler are cleared. The processor is put into SLEEP mode with the oscillator stopped. See Section 8.8 for more details. Words: 1 Cycles: 1 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode NOP NOP Go to Sleep Example: SLEEP SUBLW Subtract W from Literal Syntax: [ label ] SUBLW k Operands: 0 ≤ k ≤ 255 Operation: k - (W) → (W) Status Affected: C, DC, Z Encoding: 11 110x kkkk kkkk Description: The W register is subtracted (2’s comple- ment method) from the eight bit literal 'k'. The result is placed in the W register. Words: 1 Cycles: 1 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode Read literal 'k' Process data Write to W Example 1: SUBLW 0x02 Before Instruction W = 1 C = ? Z = ? After Instruction W = 1 C = 1; result is positive Z = 0 Example 2: Before Instruction W = 2 C = ? Z = ? After Instruction W = 0 C = 1; result is zero Z = 1 Example 3: Before Instruction W = 3 C = ? Z = ? After Instruction W = 0xFF C = 0; result is nega- tive Z = 0 |
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