Datasheet

R8C/M11A Group, R8C/M12A Group 4. Electrical Characteristics
R01DS0010EJ0200 Rev.2.00 Page 29 of 45
May 31, 2012
Notes:
1. The measurement condition is Vcc = 1.8 V to 5.5 V and Topr = -20
°C to 85 °C (N version)/-40 °C to 85 °C (D version).
2. Select the voltage detection level with bits VDSEL0 and VDSEL1 in the OFS register.
3. The response time is from when the voltage passes Vdet0 until the voltage monitor 0 reset is generated.
4. The wait time is necessary for the voltage detection circuit to operate when the VC0E bit in the VCA2 register is set to 0 and
then 1.
Notes:
1. The measurement condition is Vcc = 1.8 V to 5.5 V and Topr = -20
°C to 85 °C (N version)/-40 °C to 85 °C (D version).
2. Select the voltage detection level with bits VD1S1 to VD1S3 in the VD1LS register.
3. The response time is from when the voltage passes Vdet1 until the voltage monitor 1 interrupt request is generated.
4. The wait time is necessary for the voltage detection circuit to operate when the VC1E bit in the VCA2 register is set to 0 and
then 1.
Table 4.7 Voltage Detection 0 Circuit Electrical Characteristics
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
V
det0
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
(3)
When Vcc decreases from 5 V
to (Vdet0_0 - 0.1) V
—30—µs
— Self power consumption in voltage detection
circuit
VC0E = 1, Vcc = 5.0 V — 1.5 —
µA
t
d(E-A) Wait time until voltage detection circuit
operation starts
(4)
— — 100 µs
Table 4.8 Voltage Detection 1 Circuit Electrical Characteristics
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
V
det1
Voltage detection level Vdet1_1
(2)
When Vcc decreases 2.15 2.35 2.55 V
Voltage detection level Vdet1_3
(2)
When Vcc decreases 2.45 2.65 2.85 V
Voltage detection level Vdet1_5
(2)
When Vcc decreases 2.75 2.95 3.15 V
Voltage detection level Vdet1_7
(2)
When Vcc decreases 3.00 3.25 3.55 V
Voltage detection level Vdet1_9
(2)
When Vcc decreases 3.30 3.55 3.85 V
Voltage detection level Vdet1_B
(2)
When Vcc decreases 3.60 3.85 4.15 V
Voltage detection level Vdet1_D
(2)
When Vcc decreases 3.90 4.15 4.45 V
Voltage detection level Vdet1_F
(2)
When Vcc decreases 4.20 4.45 4.75 V
— Hysteresis width at the rising of Vcc in
voltage detection 1 circuit
Vdet1_1 to Vdet1_5 selected — 0.07 — V
Vdet1_7 to Vdet1_F selected — 0.10 — V
—
Voltage detection 1 circuit response time
(3)
When Vcc decreases from 5 V
to (Vdet1_0 - 0.1) V
— 60 150 µs
— Self power consumption in voltage detection
circuit
VC1E = 1, Vcc = 5.0 V — 1.7 —
µA
t
d(E-A) Wait time until voltage detection circuit
operation starts
(4)
— — 100 µs