HD64336900G Datasheet, PDF (348/408 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

20.3.6 Power-Supply-Voltage Detection Circuit Characteristics
Table 20.18 Power-Supply-Voltage Detection Circuit Characteristics
V_SS = 0.0 V, T_a = –20 to +75°C, unless otherwise indicated.
Item
Symbol
Test
Condition
Min.
Values
Typ. Max. Unit
Power-supply falling detection
voltage
Vint(D)
LVDSEL = 0 3.3 3.7 4.2 V
Power-supply rising detection
voltage
Reset detection voltage 1*¹
Reset detection voltage 2*²
Vint(U)
LVDSEL = 0 3.6 4.0 4.5 V
Vreset1 LVDSEL = 0 2.0 2.3 2.7 V
Vreset2 LVDSEL = 1 3.0 3.6 4.2 V
Lower-limit voltage of LVDR
operation*³
VLVDRmin
1.0 —
—
V
LVD stabilization time
Current consumption in standby
mode
tLVDON
ISTBY
50
—
—
µs
LVDE = 1, 
—
TBD µA
BGRE = 1
Vcc = 5.0 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.
3. When the power-supply voltage (Vcc) falls below VLVDRmin = 1.0 V and then rises, a
reset may not occur. Therefore sufficient evaluation is required.
20.3.7 LVDI External Voltage Detection Circuit Characteristics
Table 20.19 LVDI External Voltage Detection Circuit Characteristics
Vcc = 4.5 to 5.5 V, AVcc = 3.0 to 5.5 V, V_SS= 0.0 V, T_a = –20 to +75°C
Item
ExtD/ExtU input
detection voltage
ExtD/ExtU input voltage
range
Symbol
Vexd
VextD/U
Test
Condition
VextD > VextU
Min.
0.85
−0.3
Values
Typ. Max.
Unit
1.15 1.45
V
—
Lower voltage, V
either AVcc + 0.3
or Vcc + 0.3
Rev. 1.00, 11/03, page 320 of 376