Eddy Wireless SD Cards Series Dokumentacja Pobierz pdf (Strona 23)

M12 Hardware Design

M12_HD_V3.3 - 22 -

SIM_VDD

12

O

Voltage supply for

SIM card

The voltage can be

selected by software

automatically. Either

1.8V or 3V.

All signals of SIM

interface should be

protected against

ESD with a TVS

diode array.

Maximum trace

length is 200mm

from the module

pad to SIM card

holder.

SIM_DATA

13

I/O

SIM data

SIM_VDD=3V

VILmax=0.4V

VIHmin=

SIM_VDD-0.4

VOLmax=0.4V

VOHmin=

SIM_VDD-0.4

SIM_VDD=1.8V

VILmax=

0.15×SIM_VDD

VIHmin=

SIM_VDD-0.4

VOLmax=

0.15×SIM_VDD

VOHmin=

SIM_VDD-0.4

SIM_CLK

14

O

SIM clock

SIM_VDD=3V

VILmax=0.4V

VIHmin=

0.9×SIM_VDD

VOLmax=0.4V

VOHmin=

0.9×SIM_VDD

SIM_VDD=1.8V

VILmax=

0.12×SIM_VDD

VIHmin=

0.9×SIM_VDD

VOLmax=

0.12×SIM_VDD

VOHmin=

0.9×SIM_VDD

SIM_RST

15

O

SIM reset

SIM_VDD=3V

VILmax=0.36V

VIHmin=

0.9×SIM_VDD

VOLmax=0.4V

VOHmin=

0.9×SIM_VDD

SIM_VDD=1.8V

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