R01UH0822EJ0100 Rev.1.00
Page 1025 of 1041
Jul 31, 2019
RX13T Group
32. Electrical Characteristics
Note:
These characteristics apply when noise is not superimposed on the power supply. When a setting is made so that the voltage
detection level overlaps with that of the voltage detection circuit (LVD1), it cannot be specified which of LVD1 and LVD2 is used
for voltage detection.
Note 1. The minimum VCC down time indicates the time when VCC is below the minimum value of voltage detection levels V
POR
, V
det0
,
V
det1
, and V
det2
for the POR/LVD.
Figure 32.38
Voltage Detection Reset Timing
Table 32.40
Power-On Reset Circuit and Voltage Detection Circuit Characteristics (2)
Conditions: VCC = 2.7 V to 5.5 V, AVCC0 = VCC to 5.5 V, VSS = AVSS0 = 0 V, Ta = –40 to +105°C
Item
Symbol
Min.
Typ.
Max.
Unit
Test Conditions
Wait time after power-on reset cancellation
t
POR
―
28.4
―
ms
Wait time after voltage monitoring 0 reset
cancellation
t
LVD0
―
568
―
μs
Wait time after voltage monitoring 1 reset
cancellation
t
LVD1
―
100
―
μs
Wait time after voltage monitoring 2 reset
cancellation
t
LVD2
―
100
―
μs
Response delay time
t
det
―
―
350
μs
Minimum VCC down time*
t
VOFF
350
―
―
μs
Figure 32.38, VCC = 1.0 V or
above
Power-on reset enable time
t
W(POR)
1
―
―
ms
Figure 32.39, VCC = below
1.0 V
LVD operation stabilization time (after LVD is
enabled)
Td
(E-A)
―
―
300
μs
Hysteresis width (power-on reset (POR))
V
PORH
―
110
―
mV
Hysteresis width (LVD0, LVD1 and LVD2)
V
LVH
―
70
―
mV
Vdet0_0 to 2 selected
Vdet1_0 to 4 selected
―
60
―
Vdet1_5 to 8, LVD2 selected
Internal reset signal
(active-low)
VCC
t
VOFF
t
POR
t
det
V
POR
t
det
1.0 V