Reset By A Reset_N Pin; Figure 3.2 Reset Operation By A Reset_N Pin (1) - Toshiba TXZ+ Series Reference Manual
2-bit risc microcontroller
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3.2.1.2. Reset by a RESET_N pin
When turn on a power supply, it can control the timing of reset release by using RESET_N pin.
After a supply voltage exceeds the release voltage of a Power On Reset and even after "Internal initialization time"
elapsed, if the RESET_N pin is "Low", internal reset continues.
After a supply voltage goes up into an operating voltage range, if a RESET_N pin becomes "High", Internal reset
is deasserted after "CPU operation wait time" elapses.
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
LVD detection release time(t
Internal initialization time(
Figure 3.2 Reset operation by a RESET_N pin (1)
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Clock Control and Operation Mode
DVDD5=DVDD5A=DVDD5B=AVDD5
(V
)
PON
)
VDDT2
t
CPU operation wait time(
)
IINIT
TXZ+ Family
TMPM4K Group(2)
DVDD5
CPU Operation
start
t
)
CPUWT
2021-06-15
Rev. 1.1
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