Advertisement
Quick Links
Advertisement
Related Manuals for Sony Ericsson Automatic power on circuit
Summary of Contents for Sony Ericsson Automatic power on circuit
- Page 1 Application Note Automatic power on circuit for GM/GR 47/48...
- Page 2 First edition (March 2004) Sony Ericsson Mobile Communications publishes this manual without making any warranty as to the content contained herein. Further Sony Ericsson Mobile Communications reserves the right to make modifications, additions and deletions to this manual due to typographical errors, inaccurate information, or improvements to programs and/or equipment at any time and without notice.
- Page 3 Automatic power on circuit for GM/GR 47/48 Contents INTRODUCTION ......................... 4 SONY ERICSSON MODULE ACTIVATION CIRCUIT PROPOSAL ........5 ........... 5 ETAILED ESCRIPTION OF THE CTIVATION EQUENCE APPENDIX ..........................6 LZT 123 7876 R1A...
-
Page 4: Introduction
Automatic power on circuit for GM/GR 47/48 1 Introduction This Application Note describes a method by which the GR47 GSM/GPRS Module may be activated automatically when power is applied. The solution requires external circuitry for monitoring the supply voltage and generating a pulse on the GR47 ON/OFF signal line. -
Page 5: Sony Ericsson Module Activation Circuit Proposal
Automatic power on circuit for GM/GR 47/48 2 Sony Ericsson Module Activation Circuit Proposal The Sony Ericsson proposal for ensuring that the module automatically switches on when power is applied is detailed here. The description refers to circuitry presented in the schematic of Figure 1 in the Appendix. -
Page 6: Appendix
Automatic power on circuit for GM/GR 47/48 Appendix Figure 1 - One-Shot Switch-on Proposal Schematic LZT 123 7876 R1A...