HD64F3687GFPV Datasheet, PDF (443/538 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 23 Electrical Characteristics
23.2.8 Power-Supply-Voltage Detection Circuit Characteristics (Optional)
Table 23.10 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.
23.2.9 Power-On Reset Circuit Characteristics (Optional)
Table 23.11 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
100
150
—
kΩ
Power-on reset start voltage*
V_por
—
—
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.5.00 Nov. 02, 2005 Page 409 of 500
REJ09B0027-0500