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HD404369F データシート(PDF) 32 Page - Renesas Technology Corp |
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HD404369F データシート(HTML) 32 Page - Renesas Technology Corp |
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32 / 117 page  HD404369 Series 30 Standby Oscillator: Active Peripheral clocks: Active All other clocks: Stop No Yes No Yes No Yes No Yes No Yes No Yes Yes (SBY only) Watch Oscillator: Stop Suboscillator: Active Peripheral clocks: Stop All other clocks: Stop Restart processor clocks Reset MCU Execute next instruction Accept interrupt Restart processor clocks No Yes IF = 1, IM = 0, and IE = 1? RESET = 0? IF0 • IM0 = 1? IF1 • IM1 = 1? IFTA • IMTA = 1? IFTB • IMTB = 1? IFTC • IMTC = 1? IFAD • IMAD = 1? No Yes IFS • IMS = 1? No Stop Oscillator: Stop Suboscillator: Active/Stop Peripheral clocks: Stop All other clocks: Stop RESET = 0? STOPC = 0? RAME = 1 RAME = 0 Yes Yes No No Execute next instruction (SBY only) (SBY only) (SBY only) (SBY only) Figure 12 MCU Operation Flowchart Stop Mode: In stop mode, all MCU operations stop and RAM data is retained. Therefore, the power dissipation in this mode is the least of all modes. The OSC 1 and OSC2 oscillator stops. For the X1 and X2 oscillator to operate or stop can be selected by setting bit 3 of the system clock select register 1 (SSR1: $027; operating: SSR13 = 0, stop: SSR13 = 1) (figure 23). The MCU enters stop mode if the STOP instruction is executed in active mode when bit 3 of timer mode register A (TMA: $008) is set to 0 (TMA3 = 0) (figure 37). Stop mode is terminated by a RESET input or a STOPC input as shown in figure 13. RESET or STOPC must be applied for at least one t RC to stabilize oscillation (refer to the AC Characteristics section). When the MCU restarts after stop mode is cancelled, all RAM contents before entering stop mode are retained, |
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