Abov MC96F6432 Series, User Manual

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MC96F6432
292 June 22, 2018 Ver. 2.9
13.7 Brown Out Detector Processor
The MC96F6432 has an On-chip brown-out detection circuit (BOD) for monitoring the VDD level during
operation by comparing it to a fixed trigger level. The trigger level for the BOD can be selected by LVRVS[3:0] bit
to be 1.60V, 2.00V, 2.10V, 2.20V,2.32V, 2.44V, 2.59V, 2.75V, 2.93V, 3.14V, 3.38V, 3.67V, 4.00V, 4.40V. In the
STOP mode, this will contribute significantly to the total current consumption. So to minimize the current
consumption, the LVREN bit is set to off by software.
Figure 13.9 Block Diagram of BOD
Figure 13.10 Internal Reset at the power fail situation
VDD
Internal
RESETB
VDD
Internal
RESETB
V
BOD
MAX
V
BOD
MIN
16ms
t < 16ms 16ms
V
BOD
MAX
V
BOD
MIN
LVRVS[3:0]
RESET_BODB
Brown Out
Detector
(BOD)
D Q
CP
r
External VDD
LVREN
LVRF
(Low Voltage
Reset Flag)
CPU
Write
SCLK
(System CLK)
nPOR