ST8034C datasheet(20/39 Pages) STMICROELECTRONICS

20 / 39 page

DocID024587 Rev 4

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ST8034T, ST8034AT, ST8034P, ST8034C

Electrical characteristics

Figure 7. Definition of duty cycle and input and output rise/fall times

Duty cycle (DC) = t1 / (t1 + t2).

Table 11. Protection characteristics

Symbol

Parameter

Test conditions(1)

Min. Typ.

Max.

Unit

IOLIM

Output current limit(2)

I/O pin

-15

CLK pin

-70

RST pin

-20

ISD(VCC)

Limit and shutdown card supply current

VCC pin

120

150

TSD

Shutdown junction temperature

150

°C

1. TA = 25 °C, VDD = 3.3 V, VDDP = 5 V, VDD(INTF) = 3.3 V, fXTAL = 10 MHz, unless otherwise noted.

2. All card contacts are protected against short-circuit to any other card contact.

Table 12. Timing characteristics

Symbol

Parameter

Test conditions(1)

Min.

Typ.

Max. Unit

tACT

Activation time

See Figure 12 on

page 27

2090

4160

µs

tDEACT

Deactivation time

See Figure 13 on

page 28

250

µs

tD(START),

tD(END)

Delay time, CLK sent to card using an external

clock

tD(START) = t3,

see Figure 12 on

page 27

2090

4112

µs

tD(END) = t5,

see Figure 12 on

page 27

2120

4160

tDEB

Debounce time

PRES pin

3.2

4.5

6.4

1. TA = 25 °C, VDD = 3.3 V, VDDP = 5 V, VDD(INTF) = 3.3 V, fXTAL = 10 MHz, unless otherwise noted.

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