Holtek HT32F50231 User Manual page 69

32-Bit Arm ® Cortex ® -M0+ MCU
HT32F50231/HT32F50241
Bits Field
[19] LVDF
[22], [18:17] LVDS [2:0]
[16] LVDEN
[3] BODF
[1] BODRIS
[0] BODEN
Rev. 1.00
Descriptions
Low Voltage Detect Status Flag
0: V is higher than the specific voltage level
DD
1: V is equal to or lower than the specific voltage level
DD
When the LVD condition occurs, the LVDF flag will be asserted. When the LVDF flag
is asserted, an LVD interrupt will be generated for CPU if the LVDIWEN bit is set to 1.
However, if the LVDEWEN bit is set to 1 and the LVDIWEN bit is cleared to 0, only an LVD
event will be generated rather than an LVD interrupt when the LVDF flag is asserted.
Low Voltage Detect Level Selection
For more details concerning the LVD programmable threshold voltage, refer to the
electrical characteristics of the corresponding datasheet.
Low Voltage Detect Enable
0: Disable Low Voltage Detect
1: Enable Low Voltage Detect
Setting this bit to 1 will generate an LVD event when the V
lower than the voltage set by LVDS bits. Therefore when the LVD function is enabled
before the system is into the Deep-Sleep2 (DMOS is turn on and LDO is power
down), the LVDEWEN bit has to be enabled to avoid the LDO does not activate in
the meantime when the CPU is woken up by the low voltage detection activity.
Brown Out Detect Flag
0: V > V
DD BOD
1: V ≤ V
DD BOD
BOD Reset or Interrupt Selection
0: Reset the whole chip
1: Generate Interrupt
Brown Out Detector Enable
0: Disable Brown Out Detector
1: Enable Brown Out Detector
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power is equal to or
DD
July 31, 2018