ST8024L datasheet(13/35 Pages) STMICROELECTRONICS

13 / 35 page

ST8024L

Electrical characteristics

Doc ID 17709 Rev 5

13/35

Table 11.

Data lines to card reader (pins I/O, AUX1, and AUX2 with integrated 11 k

Ω pull-up

resistor to VCC)

Symbol

Parameter(1)

Test conditions

Min.

Typ.

Max.

Unit

VO(inactive) Output voltage

Inactive mode

No load

0.1

IO(inactive) = 1 mA

0.3

IO(inactive) Output current

Inactive mode; pin grounded

-1

VOH

High level output voltage

No DC load

0.9 VCC

VCC +0.1

5 V and 3 V cards; IOH < –40 µA

0.75 VCC

VCC +0.1

1.8 V card IOH < –40 µA

0.75 VCC

|IOH| ≥ 10 mA

0.4

VOL

Low level output voltage

IOL = 1 mA

0.2

IOL ≥ 15 mA

VCC–0.4

VCC

VIH

High level input voltage

5 V and 3 V cards

1.5

VCC +0.3

1.8 V card

0.6 VCC

VIL

Low level input voltage

5 V and 3 V cards

0.3

1.0

1.8 V card

0.2

|ILIH|

High level input leakage

current

VIH = VCC

µA

|IIL|

Low level input current

VIL = 0 V

600

µA

RPU

Integrated pull-up resistor Pull-up resistor to VCC

911

tT(DI)

Data input transition time

VIL max. to VIH min.

1.2

µs

tT(DO)

Data output transition

time

VO = 0 to VCC; CL ≤ 80 pF; 10% to

90%

0.1

µs

IPU

Current when pull-up

active

VOH = 0.9 VCC; CL = 80 pF

-2

VDD = 3.3 V, VDDP = 5 V, fXTAL = 10 MHz, unless otherwise noted. Typical values are at TA = 25 °C.

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