Rainbow-electronics DS8024 Manuale Utente Scaricare il pdf (Pagina 12)

DS8024

Smart Card Interface

12 ______________________________________________________________________________________

DEBOUNCE DEBOUNCE

V

CC

PRES

OFF

DEACTIVATION CAUSED

BY CARDS WITHDRAWAL

DEACTIVATION CAUSED

BY SHORT CIRCUIT

CMDVCC

Figure 6. Behavior of PRES, OFF, CMDVCC, and V

CC

RST

CLK

V

CC

PRES

OFF

I/O

t

10

t

DE

t

12

t

13

t

14

t

15

Figure 7. Emergency Deactivation Sequence (Card Extraction)

1 2 ... 7 8 9 10 11 12 13 14 15

Smart Card Interface 1

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