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M38K09RFS bảng dữ liệu(PDF) 227 Page - Renesas Technology Corp |
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M38K09RFS bảng dữ liệu(HTML) 227 Page - Renesas Technology Corp |
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227 / 328 page ![]() 2.12 Standby function Rev.2.00 Oct 05, 2006 page 98 of 111 38K0 Group REJ09B0337-0200 APPLICATION Fig. 2.12.4 Execution sequence example at restoration by occurrence of INT0 interrupt request (3) Notes on using stop mode sRegister setting Since values of the prescaler 12 and Timer 1 are automatically reloaded when returning from the stop mode, set them again, respectively. (When the oscillation stabilizing time set after STP instruction released bit is “0”) sClock restoration When the main clock side is set as a system clock, the oscillation stabilizing time for approximately 8,000 cycles of the XIN input is reserved at restoration from the stop mode. Stop mode XIN (System clock) INT0 pin Prescaler 12 counter Timer 1 counter INT0 interrupt request bit Peripheral device CPU Operating Operating Stopped Stopped Operating Operating 512 counts Oscillation stabilizing time XIN; H FF16 0116 Execute STP instruction INT0 interrupt signal input (INT0 interrupt request occurs) Oscillation start Prescaler 12 count start 512 counts down by prescaler 12 Start supplying internal clock φ to CPU Accept INT0 interrupt request Note: f(XIN)/16 is input as the prescaler 12 count source. qWhen restoring microcomputer from stop mode by INT0 interrupt (rising edge selected) |
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