R8C28 datasheet(28/73 Pages) RENESAS

28 / 73 page

R8C/28 Group, R8C/29 Group

5. Electrical Characteristics

Rev.2.10

Sep 26, 2008

Page 26 of 67

REJ03B0169-0210

Figure 5.2

Time delay until Suspend

NOTES:

1. The measurement condition is VCC = 2.2 to 5.5 V and Topr = -20 to 85

°C (N version) / -40 to 85°C (D version).

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

NOTES:

1. The measurement condition is VCC = 2.2 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 Vdet1.

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

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 VCC = 2.2 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 Vdet2.

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

Table 5.6

Voltage Detection 0 Circuit Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

Vdet0

Voltage detection level

2.2

2.3

2.4

−

Voltage detection circuit self power consumption

VCA25 = 1, VCC = 5.0 V

−

0.9

−µA

td(E-A)

Waiting time until voltage detection circuit operation

starts(2)

−−

300

µs

Vccmin

MCU operating voltage minimum value

2.2

−−

Table 5.7

Voltage Detection 1 Circuit Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

Vdet1

Voltage detection level(4)

2.70

2.85

3.00

−

Voltage monitor 1 interrupt request generation time(2)

−

−µs

−

Voltage detection circuit self power consumption

VCA26 = 1, VCC = 5.0 V

−

0.6

−µA

td(E-A)

Waiting time until voltage detection circuit operation

starts(3)

−−

100

µs

Table 5.8

Voltage Detection 2 Circuit Electrical Characteristics

Symbol

Parameter

Condition

Standard

Unit

Min.

Typ.

Max.

Vdet2

Voltage detection level

3.3

3.6

3.9

−

Voltage monitor 2 interrupt request generation time(2)

−

−µs

−

Voltage detection circuit self power consumption

VCA27 = 1, VCC = 5.0 V

−

0.6

−µA

td(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

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