R01UH0823EJ0100 Rev.1.00
Page 1805 of 1823
Jul 31, 2019
RX23W Group
51. Electrical Characteristics
51.9
CTSU Characteristics
51.10 Characteristics of Power-On Reset Circuit and Voltage Detection Circuit
Note:
These characteristics apply when noise is not superimposed on the power supply.
Note 1. n in the symbol Vdet0_n denotes the value of the OFS1.VDSEL[1:0] bits.
Note 2. n in the symbol Vdet1_n denotes the value of the LVDLVLR.LVD1LVL[3:0] bits.
Table 51.50
CTSU Characteristics
Conditions: 1.8 V ≤ VCC = VCC_USB = AVCC0 = VCC_RF = AVCC_RF ≤ 3.6 V, VSS = AVSS0 = VSS_USB = VSS_RF = 0 V,
T
a
= –40 to +85°C
Item
Symbol
Min.
Typ.
Max.
Unit
Test Conditions
External capacitance connected to TSCAP pin
C
tscap
9
10
11
nF
TS pin capacitive load
C
base
—
—
50
pF
Permissible output high current
I
OH
—
—
–24
mA
When the mutual
capacitance method is
applied
Table 51.51
Characteristics of Power-On Reset Circuit and Voltage Detection Circuit (1)
Conditions: 1.8 V ≤ VCC = VCC_USB = AVCC0 = VCC_RF = AVCC_RF ≤ 3.6 V, VSS = AVSS0 = VSS_USB = VSS_RF = 0 V,
T
a
= –40 to +85°C
Item
Symbol
Min.
Typ.
Max.
Unit
Test Conditions
Voltage detection
level
Power-on reset (POR)
V
POR
1.35
1.50
1.65
V
Voltage detection circuit
(LVD0)*
V
det0_1
2.70
2.82
3.00
V
Figure 51.65
At falling edge VCC
V
det0_2
2.37
2.51
2.67
V
det0_3
1.80
1.90
1.99
Voltage detection circuit
(LVD1)*
V
det1_4
2.99
3.10
3.29
V
Figure 51.66
At falling edge VCC
V
det1_5
2.89
3.00
3.19
V
det1_6
2.79
2.90
3.09
V
det1_7
2.68
2.79
2.98
V
det1_8
2.57
2.68
2.87
V
det1_9
2.47
2.58
2.67
V
det1_A
2.37
2.48
2.57
V
det1_B
2.10
2.20
2.30
V
det1_C
1.86
1.96
2.06
V
det1_D
1.80
1.86
1.96