Datasheet
R8C/2E Group, R8C/2F Group 5. Electrical Characteristics
Rev.1.00 Dec 14, 2007 Page 28 of 39
REJ03B0222-0100
Figure 5.2 Time delay until Suspend
NOTES:
1. The measurement condition is V
CC = 2.7 V to 5.5 V and Topr = −20 to 85°C (N version) / −40 to 85°C (D version).
2. Time until the voltage monitor 1 interrupt request is generated after the voltage passes V
det1.
3. Necessary time until the voltage detection circuit operates when setting to 1 again after setting the VCA26 bit in the VCA2
register to 0.
4. This parameter shows the voltage detection level when the power supply drops.
The voltage detection level when the power supply rises is higher than the voltage detection level when the power supply
drops by approximately 0.1 V.
NOTES:
1. The measurement condition is V
CC = 2.7 V to 5.5 V and Topr = −20 to 85°C (N version) / −40 to 85°C (D version).
2. Time until the voltage monitor 2 interrupt request is generated after the voltage passes V
det2.
3. Necessary time until the voltage detection circuit operates after setting to 1 again after setting the VCA27 bit in the VCA2
register to 0.
Table 5.8 Voltage Detection 1 Circuit Electrical Characteristics
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
V
det1
Voltage detection level
(4)
2.7 2.85 3.00 V
−
Voltage monitor 1 interrupt request generation time
(2)
− 40 −µs
− Voltage detection circuit self power consumption VCA26 = 1, V
CC = 5.0 V − 0.6 −µA
t
d(E-A) Waiting time until voltage detection circuit operation
starts
(3)
−−100 µs
Vccmin MCU operating voltage minimum value 2.7 −−V
Table 5.9 Voltage Detection 2 Circuit Electrical Characteristics
Symbol Parameter Condition
Standard
Unit
Min. Typ. Max.
V
det2
Voltage detection level
3.3 3.6 3.9 V
−
Voltage monitor 2 interrupt request generation time
(2)
− 40 −µs
− Voltage detection circuit self power consumption VCA27 = 1, V
CC = 5.0 V − 0.6 −µA
t
d(E-A) Waiting time until voltage detection circuit operation
starts
(3)
−−100 µs
FMR46
Suspend request
(maskable interrupt request)
Fixed time
td(SR-SUS)
Clock-dependent
time
Access restart