Eddy Wireless SD Cards Series Especificaciones descargar pdf (Pagina 24)

M12 Hardware Design

M12_HD_V3.3 - 23 -

VILmax=

0.12×SIM_VDD

VIHmin=

0.9×SIM_VDD

VOLmax=

0.12×SIM_VDD

VOHmin=

0.9×SIM_VDD

SIM_

PRESENCE

11

I

SIM card detection

VILmin=-0.3V

VILmax=

0.25×VDD_EXT

VIHmin=

0.75×VDD_EXT

VIHmax=

VDD_EXT+0.3

If unused, keep

this pin open.

AUX ADC

PIN NAME

PIN

NO.

I/O

DESCRIPTION

DC

CHARACTERISTICS

COMMENT

ADC0

41

I

General purpose

analog to digital

converter

Voltage range:

0V ~ 2.8V

If unused, keep

this pin open.

ADC1

40

I

RF interface

PIN NAME

PIN

NO.

I/O

DESCRIPTION

DC

CHARACTERISTICS

COMMENT

RF_ANT

43

I/O

RF antenna pad

Impedance of 50Ω

Refer to

Chapter 4.

Other interfaces

PIN NAME

PIN

NO.

I/O

DESCRIPTION

DC

CHARACTERISTICS

COMMENT

RESERVED

4,5,

27~37

39,53

Keep these pins

open

3.2. Operating modes

The table below briefly summarizes the various operating modes referred to in the following

chapters.

Quectel

Confidential

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 75 76

Quectel Cellular Engine 1
Confidential 10

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