Nuvoton /NUC1xx_registers /GCR /BODCR

Brown Out Detector Enable The default value is set by flash controller user configuration register config0 bit[23]. 1 = Brown Out Detector function is enabled 0 = Brown Out Detector function is disabled This bit is the protected bit. It means programming this needs to write “59h”, “16h”, “88h” to address 0x5000_0100 to disable register protection. Reference the register REGWRPROT at address GCR_BA+0x100.

Brown Out Detector Threshold Voltage Selection The default value is set by flash controller user configuration register config0 bit[22:21]. This bit is the protected bit. It means programming this needs to write “59h”, “16h”, “88h” to address 0x5000_0100 to disable register protection. Reference the register REGWRPROT at address GCR_BA+0x100. BOV_VL[1] BOV_VL[0] Brown out voltage 1 1 4.5V 1 0 3.8V 0 1 2.7V 0 0 2.2V

Brown Out Reset 1 = Enable the Brown Out “RESET” function. While the Brown Out Detector function is enabled (BOD_EN high) and BOD reset function is enabled (BOD_RSTEN high), BOD will assert a signal to reset chip when the detected voltage is lower than the threshold (BOD_OUT high). 0 = Enable the Brown Out “INTERRUPT” function While the BOD function is enabled (BOD_EN high) and BOD interrupt function is enabled (BOD_RSTEN low), BOD will assert an interrupt if BOD_OUT is high. BOD interrupt will keep till to the BOD_EN set to 0. BOD interrupt can be blocked by disabling the NVIC BOD interrupt or disabling BOD function (set BOD_EN low). The default value is set by flash controller user configuration register config0 bit[20]. This bit is the protected bit. It means programming this needs to write “59h”, “16h”, “88h” to address 0x5000_0100 to disable register protection. Reference the register REGWRPROT at address GCR_BA+0x100.

Brown Out Detector Interrupt Flag 1 = When Brown Out Detector detects the VDD is dropped down through the voltage of BOD_VL setting or the VDD is raised up through the voltage of BOD_VL setting, this bit is set to 1 and the brown out interrupt is requested if brown out interrupt is enabled. 0 = Brown Out Detector does not detect any voltage draft at VDD down through or up through the voltage of BOD_VL setting. Software can write 1 to clear this bit to zero.

Brown Out Detector Low power Mode 1 = Enable the BOD low power mode 0 = BOD operate in normal mode (default) The BOD consumes about 100uA in normal mode, the low power mode can reduce the current to about 1/10 but slow the BOD response. This bit is the protected bit. It means programming this needs to write “59h”, “16h”, “88h” to address 0x5000_0100 to disable register protection. Reference the register REGWRPROT at address GCR_BA+0x100.

Brown Out Detector output status 1 = Brown Out Detector output status is 1. It means the detected voltage is lower than BOD_VL setting. If the BOD_EN is 0, BOD function disabled , this bit always responds 0 0 = Brown Out Detector output status is 0. It means the detected voltage is higher than BOD_VL setting or BOD_EN is 0

Low Voltage Reset Enable The LVR function reset the chip when the input power voltage is lower than LVR circuit setting. LVR function is enabled in default. 1 = Enabled Low Voltage Reset function. After enabling the bit, the LVR function will be active with 100uS delay for LVR output stable (default) 0 = Disabled Low Voltage Reset function This bit is the protected bit. It means programming this needs to write “59h”, “16h”, “88h” to address 0x5000_0100 to disable register protection. Reference the register REGWRPROT at address GCR_BA+0x100