R5F21272SDFP 查看數據表（PDF） - Renesas Electronics

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R5F21272SDFP

SINGLE-CHIP 16-BIT CMOS MCU

Renesas Electronics 

R8C/26 Group, R8C/27 Group

5. Electrical Characteristics

Suspend request

(maskable interrupt request)

FMR46

Figure 5.21 Time delay until Suspend

Fixed time

Clock-dependent

time

td(SR-SUS)

Access restart

Table 5.39 Voltage Detection 1 Circuit Electrical Characteristics

Symbol

Vdet1

td(Vdet1-A)

−

td(E-A)

Vccmin

Parameter

Voltage detection level(2, 4)

Voltage monitor 1 reset generation time(5)

Voltage detection circuit self power consumption

Waiting time until voltage detection circuit operation

starts(3)

MCU operating voltage minimum value

Condition

Standard

Unit

Min. Typ. Max.

2.70 2.85 3.0

V

−

40 200 µs

VCA26 = 1, VCC = 5.0 V −

0.6

−

µA

−

−

100 µs

2.70

−

−

V

NOTES:

1. The measurement condition is VCC = 2.7 to 5.5 V and Topr = -40 to 85°C (J version) / -40 to 125°C (K version).

2. Hold Vdet2 > Vdet1.

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.

5. Time until the voltage monitor 1 reset is generated after the voltage passes Vdet1 when VCC falls. When using the digital filter,

its sampling time is added to td(Vdet1-A). When using the voltage monitor 1 reset, maintain this time until VCC = 2.0 V after the

voltage passes Vdet1 when the power supply falls.

Table 5.40 Voltage Detection 2 Circuit Electrical Characteristics

Symbol

Vdet2

td(Vdet2-A)

−

td(E-A)

Parameter

Voltage detection level(2)

Voltage monitor 2 reset/interrupt request generation

time(3, 5)

Voltage detection circuit self power consumption

Waiting time until voltage detection circuit operation

starts(4)

Condition

Standard

Unit

Min. Typ. Max.

3.3 3.6 3.9

V

−

40 200 µs

VCA27 = 1, VCC = 5.0 V −

−

0.6

−

µA

−

100 µs

NOTES:

1. The measurement condition is VCC = 2.7 to 5.5 V and Topr = -40 to 85°C (J version) / -40 to 125°C (K version).

2. Hold Vdet2 > Vdet1.

3. Time until the voltage monitor 2 reset/interrupt request is generated after the voltage passes Vdet2.

4. Necessary time until the voltage detection circuit operates after setting to 1 again after setting the VCA27 bit in the VCA2

register to 0.

5. When using the digital filter, its sampling time is added to td(Vdet2-A). When using the voltage monitor 2 reset, maintain this time

until VCC = 2.0 V after the voltage passes Vdet2 when the power supply falls.

Rev.2.10 Sep 26, 2008 Page 53 of 69

REJ03B0168-0210

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