M0564LE4AE Datasheet, PDF (63/161 Pages) List of Unclassifed Manufacturers – 32-BIT MICROCONTROLLER

M0564
AV_DD
V_LVR
T₁
( < LVRDGSEL)
T₂
( =LVRDGSEL)
Low Voltage Reset
LVREN
200 us _{Delay for LVR stable}
T₃
( =LVRDGSEL)
Figure 6.2-4 Low Voltage Reset (LVR) Waveform
6.2.2.4 Brown-out Detector Reset (BOD Reset)
If the Brown-out Detector (BOD) function is enabled by setting the Brown-out Detector Enable Bit
BODEN (SYS_BODCTL[0]), Brown-out Detector function will detect AV_DD during system
operation. When the AV_DD voltage is lower than V_BOD which is decided by BODEN
(SYS_BODCTL[0]) and BODVL (SYS_BODCTL[2:1]) and the state keeps longer than De-glitch
time set by BODDGSEL (SYS_BODCTL[10:8]), chip will be reset. The BOD reset will control the
chip in reset state until the AV_DD voltage rises above V_BOD and the state keeps longer than De-
glitch time set by BODDGSEL (SYS_BODCTL[10:8]). The default value of BODEN, BODVL and
BODRSTEN (SYS_BODCTL[3]) is set by flash controller user configuration register CBODEN
(CONFIG0 [23]), CBOV (CONFIG0 [22:21]) and CBORST(CONFIG0[20]) respectively. User can
determine the initial BOD setting by setting the CONFIG0 register. Figure 6.2-5 shows the Brown-
out Detector waveform.
May 05, 2017
Page 63 of 161
Rev 1.00