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Sony Ericsson Dual SIM connection, Application Note

Stay connected with ease with Sony Ericsson Dual SIM connection. Seamlessly switch between two SIM cards for added convenience. For a detailed guide on how to set up and use this feature, download the free Application Note manual from 88.208.23.73:8080. Never miss a call with Sony Ericsson Dual SIM connection.

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Dual SIM connection 

 
 
 
 

 
 
 

LZT 123 7676 R1A

 

 

7 

APPENDIX 

 

Figure 1.  Dual SIM schematic 

VC
C  
   

RST 

CL
K 

GN
D

VPP

DA
T

SIMCLK

SIMRST

SIMVCC

GND

SIMDATA

VC
C 

RST 

CL
K 

GN
D

VPP

DA
T

VCC

GND

COM1

COM2

NO1

NC2

IN1

IN2

HIGH = SIM1 

LOW = SIM2 

SIMSELECT 

82k

Ω

82k

Ω

100n

SIM1 

SIM2 

100n

100n 

1µF 

+ 

GR47 

NLAS325 

Summary of Contents for Dual SIM connection

Page 1: ...Application Note Dual SIM connection...

Page 2: ...ay be reproduced stored in a retrieval system or transmitted in any form or by any means electronic or mechanical including photocopying and recording without the prior written consent of Sony Ericsso...

Page 3: ...Dual SIM connection LZT 123 7676 R1A 3 Contents 1 INTRODUCTION 4 2 DESIGN OVERVIEW 4 3 OPERATION 6 APPENDIX 7...

Page 4: ...IM Presence Detection Input Each of the output signals and the supply connections can be connected directly to both SIM holders With a little signal conditioning these signals have enough drive to fan...

Page 5: ...AT2 not only achieves the idle state pull up but also compensates for the insertion of the analogue switch into the SIMDATA signal Note Due to the relatively high resistance of the pull up on SIM Data...

Page 6: ...holder activated The selection of SIM1 or SIM2 was performed by mechanical switch connecting IN1 IN2 to a pull up resistor or SIMGND respectively The SIMPRESENCE detection input to the module can be u...

Page 7: ...A 7 APPENDIX Figure 1 Dual SIM schematic VCC RST CLK GND VPP DAT SIMCLK SIMRST SIMVCC GND SIMDATA VCC RST CLK GND VPP DAT VCC GND COM1 COM2 NO1 NC2 IN1 IN2 HIGH SIM1 LOW SIM2 SIMSELECT 82k 82k 100n SI...

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