LC87FBG08A

No.A2046-20/30

Reference voltage (VREF17) Characteristics

at Ta = -40

°C to +85°C, VSS1 = 0V

Parameter

Symbol

Pin/Remarks

Conditions

Specification

VDD[V]

min

typ

max

unit

Output voltage

VOVREF

2.0 to 5.5

1.67

1.75

1.83

V

Reference voltage operation

current (Note 7-1)

IDDVREF

2.0 to 5.5

110

μA

Operation stabilization time

(Note 7-2)

tVRW

2.0 to 5.5

100

μs

Note 7-1: IDDVREF denotes the currents that only flow to multivariable RC oscillator circuit’s reference voltage circuit.

Note 7-2: tVRW denotes the stabilization time from starting multivariable RC oscillator.

Power-on Reset (POR) Characteristics

at Ta = -40

°C to +85°C, VSS1 = 0V

Parameter

Symbol

Pin/Remarks

Conditions

Specification

Option selected

voltage

min

typ

max

unit

POR release

voltage

PORRL

• Select from option.

(Note 8-1)

1.67V

1.55

1.66

1.77

V

1.97V

1.85

1.96

2.07

2.07V

1.93

2.05

2.17

2.37V

2.23

2.35

2.47

2.57V

2.43

2.55

2.67

2.87V

2.71

2.85

2.99

3.86V

3.65

3.83

4.00

4.35V

4.12

4.32

4.50

Detection voltage

unknown state

POUKS

• See Fig. 7.

(Note 8-2)

0.7

0.95

Power supply rise

time

PORIS

• Power supply rise

time from 0V to 1.6V.

100

ms

Note8-1: The POR release level can be selected out of 8 levels only when the LVD reset function is disabled.

Note8-2: POR is in an unknown state before transistors start operation.

Low Voltage Detection Reset (LVD) Characteristics

at Ta = -40

°C to +85°C, VSS1=0V

Parameter

Symbol

Pin/Remarks

Conditions

Specification

Option selected

voltage

min

typ

max

unit

LVD reset voltage

(Note 9-2)

LVDET

• Select from option.

(Note 9-1)

(Note 9-3)

• See Fig. 8.

1.91V

1.81

1.91

2.01

V

2.01V

1.90

2.00

2.10

2.31V

2.20

2.30

2.40

2.51V

2.40

2.50

2.60

2.81V

2.68

2.80

2.92

3.79V

3.62

3.78

3.94

4.28V

4.09

4.27

4.45

LVD hysteresis width

LVHYS

1.91V

50

mV

2.01V

50

2.31V

50

2.51V

50

2.81V

50

3.79V

50

4.28V

50

Detection voltage

unknown state

LVUKS

• See Fig. 8.

(Note 9-4)

0.7

0.95

V

Low voltage detection

minimum width

(Reply sensitivity)

TLVDW

• LVDET-0.5V

• See Fig. 9.

0.2

ms

Note9-1: The LVD reset level can be selected out of 7 levels only when the LVD reset function is enabled.

Note9-2: LVD reset voltage specification values do not include hysteresis voltage.

Note9-3: LVD reset voltage may exceed its specification values when port output state changes and/or when a large

current flows through port.

Note9-4: LVD is in an unknown state before transistors start operation.