Sim2 M80 Guia do Utilizador descarregar pdf (Página 22)

M80 EVB User Guide

M80_EVB_UGD_V1.2 - 21 -

Figure 19: Pins of SIM1 card cassette

Table 7: Pins of SIM1 card interface

Signal

I/O

Description

Note

GND

VPP

Not connected

SIM1_DATA

I/O

SIM1 card data I/O

SIM1_CLK

SIM1 card clock

SIM1_RST

SIM1 card reset

SIM1_VDD

SIM1 power

Pulled down to GND with external

circuit. When the SIM card is

inserted, pin 7 is connected to pin 8.

SIM1_PRESENCE

SIM1 Card detect

In order to be compatible with further application, M80 reserves an SIM IC in the EVB. Please

refer to SIM1 card schematic about SIM IC circuit except SIM detect function, since the SIM IC

interface does not support SIM card detection. The following picture shows test points.

Quectel

Confidential

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