BAT32G1x9 user manual | Chapter 29 Reset function
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Rev.1.02
Figure 29-3
Reset timing due to overflow of watchdog timer, assertion of
system reset request bits, detection of RAM parity errors, or
detection of illegal memory access
watchdog timer overflow/
system reset request bit set /
RAM parity error check detection/
illegal register storage detection
internal reset signal
normal
operation
reset period (osc
stop)
wait till osc precision stablized
start X1 oscilation via software
configuration
normal operation (high speed internal
osc clock)
Hi-Z
reset
processing
0.0511ms(TYP.),
0.0701ms(MAX.)
high speed internal osc
clock
high speed system clock
(select X1 osc scenario)
CPU status
Port in (except P130)
Port in
(P130)
Note3
Note1
Note 1
If a reset occurs, the
P130
outputs a low level. Therefore, if the
P130
is set to a high output before a reset occurs,
the output
of
the P130
can be
virtually output as a reset signal from an external device. To dismiss the reset signal
from an external device, the
P130
must be
set to high via
software
.
2. Reset processing time when removing external reset:
1st
time after
POR
released
:
0.672ms (TYP.
).
, 0.832ms(MAX.)
(in the case
of
LVD).
0.399ms(TYP.) , 0.519ms(MAX.)
(In
the case of
not using
LVD
)
2nd
time after
the
POR
released: 0.531ms (TYP.
).
, 0.675ms(MAX.)
(in the case
of
LVD).
0.259ms(TYP.) , 0.362ms(MAX.)
(when
LVD
is
not used).
When the supply voltage rises, a voltage stabilization wait time of 0.99ms (TYP.) is required before the reset
processing time at the time of external reset is lifted , 2.30ms(MAX.)
。
3. Port pin
P40
changes to the following state:
• High impedance during external reset or
POR
reset.
• High during other resets and after receiving the reset
(connects internal pull-up resistors). Note that the
watchdog timer is no exception, resetting when an internal reset occurs.
For resets resulting from voltage detection of POR circuits and LVD circuits, ifVDD≥ VPOR or VDD ≥ are met
after the reset VLVD, the reset state is lifted, and after the reset processing begins execution with a high-speed
internal oscillator clock. For details, please refer to "Chapter 30 Power-on Reset Circuits" and "Chapter 31" Chapter
Voltage Detection Circuits".
Note V
POR
:
The POR
supply voltage rises to
the detection voltage
V
LVD
:
LVD
sense voltage