4 Electrical characteristics

Migrating applications from ST7FLITE1x to ST7FLITE1xB

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4

Electrical characteristics

There are several differences in the electrical parameters between the ST7LITE1x and

ST7LITE1xB. The principal differences are shown in the tables below. Please refer to the

respective datasheets for the complete specifications.

Table 2.

Operating conditions with Low Voltage Detector (LVD) - typical values

Table 3.

Auxiliary Voltage Detector (AVD) - typical values

Table 4.

Internal RC oscillator and PLL

Note:

Refer to 3.1 for more details.

Symbol

Parameter

Conditions

ST7Lite1x

ST7FLite1xB

Unit

Reset release

High Threshold

4.25

4.15

V

Medium Threshold

3.60

3.55

V

Low Threshold

2.90

2.85

V

Reset generation

High Threshold

4.05

3.95

V

Medium Threshold

3.40

3.35

V

Low Threshold

2.7

2.7

V

LVD Voltage thresh-

old hysteresis

200

200

mV

0.02 - 20

0.02 - 100

ms/V

Symbol

Parameter

Conditions

ST7Lite1x

ST7FLite1xB

Unit

1=> 0 AVDF flag tog-

rise)

High Threshold

4.70

4.40

V

Medium Threshold

4.10

3.85

V

Low Threshold

3.40

3.15

V

0=1 0 AVDF flag tog-

fall)

High Threshold

4.60

4.15

V

Medium Threshold

3.90

4.0

V

Low Threshold

3.20

3.35

V

LVD Voltage thresh-

old hysteresis

200

200

mV

Symbol

Parameter

ST7Lite1x

ST7Lite1xB

Unit

Min

Typ

Max

Min

Typ

Max

Internal RC Oscillator operat-

ing voltage

2.4

5.5

2.7

5.5

V

x4 PLL operating voltage

2.4

3.3

2.7

3.3

x8 PLL operating voltage

3.3

5.5

3.3

5.5

PLL startup time

60

60

cles