HD6433694 Datasheet, PDF (358/432 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

21.3.7 Power-Supply-Voltage Detection Circuit Characteristics (Optional)
Table 21.19 Power-Supply-Voltage Detection Circuit Characteristics
V_SS = 0.0 V, T_a = –20 to +75°C, unless otherwise indicated.
Values
Item
Symbol
Test Condition Min Typ Max Unit
Power-supply falling detection
voltage
Vint (D)
LVDSEL = 0 3.3
3.7
—
V
Power-supply rising detection
voltage
Vint (U)
LVDSEL = 0 —
4.0
4.5
V
Reset detection voltage 1*¹
Vreset1
LVDSEL = 0 —
2.3
2.7
V
Reset detection voltage 2*²
Vreset2
LVDSEL = 1 3.0
3.6
4.2
V
Lower-limit voltage of LVDR
operation*³
V_LVDRmin
1.0
—
—
V
LVD stabilization time
t_LVDON
Current consumption in standby
I_STBY
mode
50
—
—
µs
LVDE = 1,
—
—
350 µA
Vcc = 5.0 V,
When a 32-kHz
crystal
resonator is not
used
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 V = 1.0 V and then rises, a reset
LVDRmin
may not occur. Therefore sufficient evaluation is required.
21.3.8 Power-On Reset Circuit Characteristics (Optional)
Table 21.20 Power-On Reset Circuit Characteristics
V_SS = 0.0 V, T_a = –20 to +75°C, unless otherwise indicated.
Values
Item
Symbol
Test Condition Min Typ Max Unit
Pull-up resistance of RES pin
R_RES
Power-on reset start voltage*
V_por
100 150 —
kΩ
—
—
100 mV
Note: * The power-supply voltage (Vcc) must fall below Vpor = 100 mV and then rise after
charge of the RES pin is removed completely. In order to remove charge of the RES
pin, it is recommended that the diode be placed in the Vcc side. If the power-supply
voltage (Vcc) rises from the point over 100 mV, a power-on reset may not occur.
Rev. 4.00, 03/04, page 330 of 400