ST8024LCTR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST8024LCTR

Smartcard interface

STMicroelectronics 

Electrical characteristics

ST8024L

Table 17. Card presence inputs (pins PRES and PRES)

Symbol

Parameter(1)

Test conditions

Min. Typ. Max. Unit

VIL

VIH

|ILIH|

|ILIL|

Low level input voltage

High level input voltage

High level input leakage

current

Low level input leakage

current

VIH = VDD

VIL = 0

-0.3

0.7 VDD

-

0.3 VDD V

- VDD +0.3 V

-

5

µA

-

5

µA

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

Pin PRES is active low; pin PRES is active high, see Figure 8 and Figure 9; PRES has an integrated 1.25 µA current source

to GND. (PRES to VDD); the card is considered present if at least one of the inputs PRES or PRES is active.

Table 18. Interrupt output (pin OFF NMOS drain with integrated 20 kΩ pull-up resistor to VDD)

Symbol

Parameter(1)

Test conditions

Min. Typ. Max. Unit

VOL Low level output voltage

IOL = 2 mA

0

VOH High level output voltage

IOH = –15 µA

0.75 VDD

RPU Integrated pull-up resistor 20 kΩ pull-up resistor to VDD

16

20

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

0.3

V

V

24

kΩ

Table 19. Protection and limitation

Symbol

Parameter(1)

Test conditions Min. Typ.

|ICC(SD)| Shutdown and limitation current pin VCC

90

II/O(lim) Limitation current pins I/O, AUX1 and AUX2

–15

ICLK(lim)

IRST(lim)

TSD

Limitation current pin CLK

Limitation current pin RST

Shutdown temperature

–70

–20

150

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

Max.

120

15

70

20

Unit

mA

mA

mA

mA

°C

Table 20. Timing

Symbol

Parameter(1)

Test conditions Min. Typ.

tACT Activation time

For VCC = 5 V

50

(See Figure 5)

tDE

t3

t5

tdebounce

Deactivation time

(See Figure 7)

Start of the window for sending CLK to card (See Figure 6)

End of the window for sending CLK to card (See Figure 6)

Debounce time pins PRES and PRES

(See Figure 8)

50

80

140

5

8

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

Max.

220

100

130

11

Unit

µs

µs

µs

µs

ms

16/35

Doc ID 17709 Rev 5

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