DocID024511 Rev 2

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ST8034HN, ST8034HC

Functional description

Time delays

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Figure 11. Deactivation sequence

6.9

limiter with a limit threshold value of 120 mA typ., with a glitch immunity allowing overcurrent

pulses up to 200 mA with duration up to several microseconds not causing a deactivation

(the average current value must stay below the specified current limit, see Table 6 on

page 11 and Table 10 on page 17).

A 100 nF capacitor (min.) with ESR < 350 m

another low ESR 100 nF capacitor (min.) should be tied to GND also on the card side, near

the card reader contact C1.