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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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H8S/2224 Scheda tecnica(PDF) 880 Page - Renesas Technology Corp |
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H8S/2224 Scheda tecnica(HTML) 880 Page - Renesas Technology Corp |
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880 / 1071 page  Section 24 Power-Down Modes Rev. 5.00 Aug 08, 2006 page 794 of 982 REJ09B0054-0500 24.4.4 Software Standby Mode Application Example Figure 24.3 shows an example in which a transition is made to software standby mode at the falling edge on the NMI pin, and software standby mode is cleared at the rising edge on the NMI pin. In this example, an NMI interrupt is accepted with the NMIEG bit in SYSCR cleared to 0 (falling edge specification), then the NMIEG bit is set to 1 (rising edge specification), the SSBY bit is set to 1, and a SLEEP instruction is executed, causing a transition to software standby mode. Software standby mode is then cleared at the rising edge on the NMI pin. Oscillator φ NMI NMIEG SSBY NMI exception handling NMIEG = 1 SSBY = 1 SLEEP instruction Software standby mode (power-down mode) Oscillation settling time tOSC2 NMI exception handling Figure 24.3 Software Standby Mode Application Example |
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