ST8024CD Ver la hoja de datos (PDF) - STMicroelectronics

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Fabricante

ST8024CD

COM/SEG LCD Driver

STMicroelectronics 

ST8024

Table 5: Electrical Characteristics Over Recommended Operating Conditions (VDD = 3.3V, VDDP =

5V, fXTAL = 10MHz, unless otherwise noted. Typical values are to Ta = 25°C)

Symbol

Parameter

Test Conditions

VDD Supply Voltage

VDDP Supply Voltage for the

voltage doubler

VCC = 5V; |ICC| < 80 mA

VCC = 5V; |ICC| < 20 mA

IDD Supply Current

Card Inactive

Card Active; fCLK = fXTAL; CL = 30pF

IDDP

DC/DC converter Supply

Current

Inactive mode

Active mode; fCLK = fXTAL; CL = 30pF;

|ICC| = 0

VCC = 5V; |ICC| = 80 mA

VCC = 3V; |ICC| = 65 mA

Vth2 Falling Threshold Voltage no external resistors at pin PORADJ;

on VDD

VDD level falling

VHYS2 Hysteresis of Threshold

Voltage Vth2

no external resistors at pin PORADJ

Vth(ext)rise External rising Threshold external resistor bridge at pin PORADJ;

Voltage on VDD

VDD level rising

Vth(ext)fall External falling Threshold external resistor bridge at pin PORADJ;

Voltage on VDD

VDD level falling

VHYS(ext) Hysteresis of Threshold

Voltage Vth(ext)

external resistor bridge at pin PORADJ

∆VHYS(ext) Hysteresis of Threshold

Voltage Vth(ext) variation

with temperature

external resistor bridge at pin PORADJ

tW Width of internal Power-On no external resistor at pin PORADJ

reset pulse

external resistor bridge at pin PORADJ

IL

Leakage current on pin

VPORADJ < 0.5 V

PORADJ

VPORADJ > 1.0 V

PTOT Total power dissipation

Continuous operation; Ta = -25 to 85°C

Min.

2.7

4.0

3.0

Typ.

5

Max. Unit

6.5

V

6.5

V

6.5

1.2 mA

1.5

0.1 mA

10

200

100

2.35 2.45 2.55

V

50

100 150 mV

1.18 1.21 1.24

V

1.12 1.15 1.18

V

30

60

90 mV

0.25 mV/K

4

8

8

16

-0.1

4

12

ms

24

10

µA

-1

1

0.56 W

Table 6: Step-up Converter (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical

values are to Ta = 25°C)

Symbol

Parameter

fCLK

Vth(vd-vf)

VUP(av)

Clock Frequency

Threshold voltage for

Step-up Converter to

change to voltage follower

Output Voltage on pin VUP

(average value)

Test Conditions

Card active

5 V card

3 V card

VCC = 5 V

VCC = 3 V; VDDP = 3.3 V

Min.

2.2

5.2

3.8

5.2

3.5

Typ.

5.8

4.1

5.7

3.9

Max.

3.2

6.2

4.4

Unit

MHz

V

6.2

V

4.3

5/23

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