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NUC120-RA3E Fiches technique(PDF) 49 Page - Nuvoton Technology Corporation |
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NUC120-RA3E Fiches technique(HTML) 49 Page - Nuvoton Technology Corporation |
49 / 107 page NUC100/120xxxDN Aug 31, 2015 Page 49 of 107 Rev 1.01 AVDD voltage is lower than VLVR and the state keeps longer than De-glitch time (16*HCLK cycles), chip will be reset. The LVR reset will control the chip in reset state until the AVDD voltage rises above VLVR and the state keeps longer than De-glitch time. The RSTS_RESET (RSTSRC[1]) will be set to 1 if the previous reset source is nRESET reset. Figure 6-5 shows the Low Voltage Reset waveform. AVDD VLVR Low Voltage Reset T1 (<De-glitch time) T2 (=De-glitch time) T3 (=De-glitch time) LVR_EN 100 us Delay for LVR stable Figure 6-5 Low Voltage Reset (LVR) Waveform Brown-out Detector Reset (BOD Reset) 6.2.2.4 If the Brown-out Detector (BOD) function is enabled by setting the Brown-out Detector Enable Bit BOD_EN (BODCR[0]), Brown-Out Detector function will detect AVDD during system operation. When the AVDD voltage is lower than VBOD which is decided by BOD_EN (BODCR[0]) and BOD_VL (BODCR[2:1]) and the state keeps longer than De-glitch time (Max(20*HCLK cycles, 1*LIRC cycle)), chip will be reset. The BOD reset will control the chip in reset state until the AVDD voltage rises above VBOD and the state keeps longer than De-glitch time. The default value of BOD_EN, BOD_VL and BOD_RSTEN is set by flash controller user configuration register CBODEN (CONFIG0[23]), CBOV1-0 (CONFIG0[22:21]) and CBORST (CONFIG0[20]) respectively. User can determine the initial BOD setting by setting the CONFIG0 register. Figure 6-6 shows the Brown-Out Detector waveform. |
Numéro de pièce similaire - NUC120-RA3E |
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Description similaire - NUC120-RA3E |
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