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PC312XDP512F0CFVR Datasheet(PDF) 567 Page - Freescale Semiconductor, Inc |
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PC312XDP512F0CFVR Datasheet(HTML) 567 Page - Freescale Semiconductor, Inc |
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567 / 1348 page  Chapter 14 Voltage Regulator (S12VREG3V3V5) MC9S12XDP512 Data Sheet, Rev. 2.21 Freescale Semiconductor 567 14.4.10.1 Low-Voltage Interrupt (LVI) In FPM, VREG_3V3 monitors the input voltage VDDA. Whenever VDDA drops below level VLVIA, the status bit LVDS is set to 1. On the other hand, LVDS is reset to 0 when VDDA rises above level VLVID.An interrupt, indicated by flag LVIF = 1, is triggered by any change of the status bit LVDS if interrupt enable bit LVIE = 1. NOTE On entering the Reduced Power Mode, the LVIF is not cleared by the VREG_3V3. 14.4.10.2 Autonomous Periodical Interrupt (API) As soon as the configured timeout period of the API has elapsed, the APIF bit is set. An interrupt, indicated by flag APIF = 1, is triggered if interrupt enable bit APIE = 1. Autonomous periodical interrupt (API) APIE = 1 Table 14-10. Interrupt Vectors Interrupt Source Local Enable |
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