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H8SX/1663M データシート(PDF) 1297 Page - Renesas Technology Corp |
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H8SX/1663M データシート(HTML) 1297 Page - Renesas Technology Corp |
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1297 / 1504 page ![]() Section 28 Power-Down Modes Rev. 2.00 Sep. 24, 2008 Page 1265 of 1468 REJ09B0412-0200 28.7.4 Software Standby Mode Application Example Figure 28.2 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 INTCR 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 I 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 28.2 Software Standby Mode Application Example |
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