Datasheet

Section 22 Electrical Characteristics
Rev. 3.00 Sep. 10, 2007 Page 434 of 528
REJ09B0216-0300
22.2.7 Power-Supply-Voltage Detection Circuit Characteristics
Table 22.9 Power-Supply-Voltage Detection Circuit Characteristics
V
SS
= 0.0 V, T
a
= -20 to +75°C/-40 to +85°C, unless otherwise indicated.
Values
Item Symbol
Test
Condition
Min. Typ. Max. Unit
Power-supply falling detection
voltage
Vint (D) LVDSEL = 0 3.4 3.7 — V
Power-supply rising detection
voltage
Vint (U) LVDSEL = 0 — 4.0 4.4 V
Reset detection voltage 1*
1
Vreset1 LVDSEL = 0 — 2.3 2.6 V
Reset detection voltage 2*
2
Vreset2 LVDSEL = 1 3.3 3.6 3.9 V
Lower-limit voltage of LVDR
operation
V
LVDRmin
1.0 — — V
Notes: 1. This voltage should be used when the falling and rising voltage detection function is
used.
2. Select the low-voltage reset 2 when only the low-voltage detection reset is used.
22.2.8 LVDI External Input Voltage Detection Circuit Characteristics
Table 22.10 LVDI External Input Voltage Detection Circuit Characteristics
Vcc = 4.5 to 5.5 V, AVcc = 4.5 to 5.5 V, V
SS
= 0.0 V, T
a
= -20 to +75°C/-40 to +85°C
Values
Item Symbol
Test
Condition Min. Typ. Max. Unit
ExtD/ExtU input detection voltage Vexd 1.0 1.15 1.30 V
ExtD/ExtU input voltage range VextD/VextU VextD > VextU −0.3  Lower
voltage
of AV
cc
+ 0.3 or
V
cc
+
0.3
V