Continuation Of Reset By Lvd; Figure 3.4 Reset Operation By Lvd Reset - Toshiba TXZ+ Series Reference Manual
2-bit risc microcontroller
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3.2.1.3. Continuation of reset by LVD
When the power supply voltage has not exceeded the LVD release voltage even after "Internal initialization time"
elapsed, LVD generates the reset signal and the reset state continues. After the power supply voltage exceeds the
LVD release voltage and "LVD detection release time" + "CPU operation wait time" elapses, the internal reset is
released. And CPU starts operating. Refer to the reference manual "Voltage Detection Circuit" for details of LVD.
Operating voltage range
LVD Release
Voltage
(V
)
LVL0
PORF release
Voltage
(V
)
PREL
POR release
Voltage
(V
)
PREL
0V
RESET_N pin
LVD reset
Internal reset
Power slope
(V
Internal initialization time(
Figure 3.4 Reset operation by LVD reset
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Clock Control and Operation Mode
DVDD5=DVDD5A=DVDD5B=AVDD5
)
PON
LVD detection
t
)
CPU operation wait time
IINIT
release time
t
(
)
VDDT2
TXZ+ Family
TMPM4K Group(2)
DVDD5
CPU Operation
start
t
(
)
CPUWT
2021-06-15
Rev. 1.1
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