Sim2 M80 Guia do Utilizador descarregar pdf (Página 21)

M80 EVB User Guide

M80_EVB_UGD_V1.2 - 20 -

Figure 17: Test points of PCM interface

Note: W681360 is not assembled in the EVB board. If this function is needed, please assemble

this component located at U301.

3.4. SIM Card

The SIM interface is powered from an internal regulator in the module. Both 1.8V and 3.0V SIM

Cards are supported.

The following two figures show the schematic of SIM1 card and the pins assignment of SIM1 card

respectively. SIM1 cassette has adopted an EINT to detect the SIM card.

Figure 18: Circuit of SIM1 card

Quectel

Confidential

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Sim2 M80 Guia do Utilizador Página 21