ST8024CTR datasheet(11/30 Pages) STMICROELECTRONICS

11 / 30 page

ST8024

Electrical characteristics

11/30

Table 13.

Reset output to card reader (pin RST) (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless

otherwise noted. Typical values are to TA = 25°C)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VO(inactive)

Output Voltage in Inactive

Mode

IO(inactive) = 1 mA

0.3

No Load

0.1

IO(inactive)

Output Current

Inactive mode; pin grounded

-1

tD(RSTIN-RST) RSTN to RST Delay

RST Enable

µs

VOL

Low Level Output Voltage

IOL = 200 µA

0.2

IOL = 20 mA (current limit)

VCC-0.4

VCC

VOH

High Level Output Voltage

IOH = -200 µA

0.9VCC

VCC

IOH = -20 mA (current limit)

0.4

tR, tF

Rise and fall time

CL = 100 pF; VCC = 5 or 3 V

0.1

µs

Table 14.

Clock output to card reader (pin CLK) (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless

otherwise noted. Typical values are to TA = 25°C)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VO(inactive)

Output voltage in inactive mode

IO(inactive) = 1 mA

0.3

No Load

0.1

IO(inactive)

Output current

CLK Inactive mode; pin

grounded

0-1

VOL

Low level output voltage

IOL = 200 µA

0.3

IOL = 70 mA (current

limit)

VCC-0.4

VCC

VOH

High level output voltage

IOH = -200 µA

0.9VCC

VCC

IOH = -70 mA (current

limit)

00.4

tR, tF

Rise and fall time

CL = 30 pF (Note 4)16

Duty factor (except for fXTALS)CL = 30 pF (Note 4)45

Slew rate

Slew up or down;

CL = 30 pF

0.2

V/ns

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