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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 and RESET_N pin is still "Low", internal reset is extended.
After a supply voltage goes up into an operating voltage range and a RESET_N pin becomes "High", Internal reset
is deasserted after "CPU operation latency time" elapses.
Operation Voltage range
LVD Release voltage
(V
)
LVL0
PORF Release voltage
(V
)
PORFL
POR release voltage
(V
)
PREL
0V
RESET_N pin
LVD reset
Internal reset
PORF detection release time (
LVD detection release time (
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
Power on rising gradient
(V
)
PON
t
)
VPORF2
t
)
VDDT2
t
)
IINIT
TXZ+ Family
TMPM3H Group(2)
DVDD5
CPU Operation
start
t
CPU waiting time(
)
CPUWT
2023-04-28
Rev. 1.0
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