Emergency Deactivation/Fault Detection

AN2269 - Application Note

12/25

3.3

Fault On Card Removal

If the smart card is pulled out from its socket (PRES goes high or PRES goes low), the

deactivation sequence starts. The OFF pin goes low and the device switches off (see

Figure 9). In order to avoid bouncing on the PRES (or PRES) signal at card insertion or

If CMDVcc goes low before this time, after card insertion, the device does not turn itself on

Figure 9.

Card Extraction

Figure 10.