Nuvoton NuMicro NUC029 Series, Technical Reference Manual

Page: 44 / 497

NuMicro® NUC029LEE/NUC029SEE
32-bit Arm
®
Cortex
®
-M0 Microcontroller
Aug, 2018 Page 44 of 497
Rev 1.00
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Brown-out Detector Control Register (BODCR)
Partial of the BODCR control registers values are initiated by the flash configuration and partial bits
are write-protected bit. Programming write-
protected bits needs to write “59h”, “16h”, “88h” to address
0x5000_0100 to disable register protection. Refer to the register REGWRPROT at address
0x100.
Register Offset R/W Description Reset Value
BODCR 0x18 R/W Brown-out Detector Control Register 0x0000_008X
31 30 29 28 27 26 25 24
Reserved
23 22 21 20 19 18 17 16
Reserved
15 14 13 12 11 10 9 8
Reserved
7 6 5 4 3 2 1 0
LVR_EN BOD_OUT BOD_LPM BOD_INTF BOD_RSTEN BOD_VL BOD_EN
Bits Description
[31:8] Reserved Reserved.
[7] LVR_EN
Low Voltage Reset Enable Bit (Write Protect)
The LVR function reset the chip when the input power voltage is lower than LVR circuit
setting. LVR function is enabled by default.
0 = Low Voltage Reset function Disabled.
1 = Low Voltage Reset function Enabled
– After enabling the bit, the LVR function will be
active with 100us delay for LVR output stable (default).
Note:
This bit is the protected bit, and programming it needs to write “59h”, “16h”, and
“88h” to address 0x5000_0100 to disable register protection. Refer to the register
REGWRPROT at address 0x100.
[6]
BOD_OUT
Brown-Out Detector Output Status
0 = Brown-out Detector output status is 0. It means the detected voltage is higher than
BOD_VL setting or BOD_EN is 0.
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 to 0.
[5] BOD_LPM
Brown-Out Detector Low Power Mode (Write Protect)
0 = BOD operated in Normal mode (default).
1 = BOD Low Power mode Enabled.
Note1: The BOD consumes about 100 uA in Normal mode, and the low power mode can
reduce the current to about 1/10 but slow the BOD response.
Note2: This bit is the
protected bit, and programming it needs to write “59h”, “16h”, and
“88h” to address 0x5000_0100 to disable register protection. Refer to the register
REGWRPROT at address 0x100.
[4] BOD_INTF
Brown-Out Detector Interrupt Flag
0 = Brown-out Detector does not detect any voltage draft at V
DD
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