R8C/3GD Group

5. Electrical Characteristics

REJ03B0289-0100 Rev.1.00

Feb 26, 2010

Page 26 of 41

Notes:

2. Select the voltage detection level with bits VDSEL0 and VDSEL1 in the OFS register.

3. Necessary time until the voltage detection circuit operates when setting to 1 again after setting the VCA25 bit in the VCA2

register to 0.

Notes:

2. Select the voltage detection level with bits VD1S0 to VD1S3 in the VD1LS register.

4. Necessary time until the voltage detection circuit operates when setting to 1 again after setting the VCA26 bit in the VCA2

register to 0.

Table 5.6

Voltage Detection 0 Circuit Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

Voltage detection level Vdet0_0 (2)

1.80

1.90

2.05

V

Voltage detection level Vdet0_1 (2)

2.15

2.35

2.50

V

Voltage detection level Vdet0_2 (2)

2.70

2.85

3.05

V

Voltage detection level Vdet0_3 (2)

3.55

3.80

4.05

V

Voltage detection 0 circuit response time (4)

At the falling of Vcc from 5 V

to (Vdet0_0

0.1) V

6

150

s

Voltage detection circuit self power consumption

1.5

A

Waiting time until voltage detection circuit

operation starts (3)

100

s

Table 5.7

Voltage Detection 1 Circuit Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

Voltage detection level Vdet1_0 (2)

2.00

2.20

2.40

V

Voltage detection level Vdet1_1 (2)

2.15

2.35

2.55

V

Voltage detection level Vdet1_2 (2)

2.30

2.50

2.70

V

Voltage detection level Vdet1_3 (2)

2.45

2.65

2.85

V

Voltage detection level Vdet1_4 (2)

2.60

2.80

3.00

V

Voltage detection level Vdet1_5 (2)

2.75

2.95

3.15

V

Voltage detection level Vdet1_6 (2)

2.85

3.10

3.40

V

Voltage detection level Vdet1_7 (2)

3.00

3.25

3.55

V

Voltage detection level Vdet1_8 (2)

3.15

3.40

3.70

V

Voltage detection level Vdet1_9 (2)

3.30

3.55

3.85

V

Voltage detection level Vdet1_A (2)

3.45

3.70

4.00

V

Voltage detection level Vdet1_B (2)

3.60

3.85

4.15

V

Voltage detection level Vdet1_C (2)

3.75

4.00

4.30

V

Voltage detection level Vdet1_D (2)

3.90

4.15

4.45

V

Voltage detection level Vdet1_E (2)

4.05

4.30

4.60

V

Voltage detection level Vdet1_F (2)

4.20

4.45

4.75

V

Hysteresis width at the rising of Vcc in voltage

detection 1 circuit

Vdet1_0 to Vdet1_5

selected

0.07

V

Vdet1_6 to Vdet1_F

selected

0.10

V

Voltage detection 1 circuit response time (3)

At the falling of Vcc from

5 V to (Vdet1_0

0.1) V

60

150

s

Voltage detection circuit self power consumption

1.7

A

Waiting time until voltage detection circuit operation

starts (4)

100

s