HD64F36022 datasheet(292/384 Pages) RENESAS

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Section 18 Electrical Characteristics

Rev. 4.00 Sep. 23, 2005 Page 266 of 354

REJ09B0025-0400

18.2.7

Power-Supply-Voltage Detection Circuit Characteristics (Optional)

Table 18.8

Power-Supply-Voltage Detection Circuit Characteristics

SS = 0.0 V, Ta = –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

—

Power-supply rising detection

voltage

Vint (U)

LVDSEL = 0

—

4.0

4.5

Reset detection voltage 1*

Vreset1

LVDSEL = 0

—

2.3

2.7

Reset detection voltage 2*

Vreset2

LVDSEL = 1

3.0

3.6

4.2

Lower-limit voltage of LVDR

operation*

LVDRmin

1.0

—

LVD stabilization time

LVDON

—

µs

Current consumption in standby

mode

STBY

LVDE = 1,

Vcc = 5.0 V,

When a 32-

kHz crystal

resonator is

not used



—

350

µA

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

LVDRmin = 1.0 V and then rises, a reset

may not occur. Therefore sufficient evaluation is required.

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