IC卡时钟实测数值
______________________________________________________________________
VCC__/
_____________________________________________________________________
VPP___/
t12
:<---------------->:
:__________________:
RST_____/: \_______________________________________________
: :
: t10 t11 : t15 t16
:<---->: :<---->: t14 :<---->: :<---->:
: ____ : :<---->: :______: : : _______
CLK_____________:/ 1 \:______:______:/ 2 \:______:/ 3 \_______
: :
: t13 : t17
:<---->: :<---->:
_____________________________ :______________ :______________ ___
I/O___//////////////////////////////\:_______1______X-X_______2_______X-X___
5us <= t10 10us <= t14 <= 100us Clock low after RST
5us <= t11 10us <= t15 <= 50us Clock High
50us <= t12 ........ Reset High 10us <= t16 <= 100us Clock Low
t13 <= 10us Propagation delay t17 <= 10us Propagation delay
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