General; Scope; Abbreviations - Wavecom GX64 Application Note

1

General

1.1

Scope

This document is meant to be used in addition to the Integrators Manual of the
intended GR/GS64 Wireless CPU. Basic information such as electrical requirements,
safety concerns, etc. can be found in the Integrators Manual, while this document
focuses more on the different aspects of application implementations.
GR/GS64 Wireless CPUs are designed with the capability to be integrated into an
application which supplies it with power from a Li-Ion battery and provides the
capability to charge this battery through an internal charging algorithm.
Application requirements are:
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•
•
1.2

Abbreviations

Abbreviation
ADC
ADIN1
Application
CPS
DRX
FRC
NTC
NVM
PTC
R
TH nom
VREF
Gx64 APPLICATION NOTE
Charging Interface
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A charger voltage and current limited to ~5.5V and 500mA respectively with a
reverse current protection diode (CPS).
A Li-Ion battery pack, with a built-in Thermistor that shares a common
ground with the battery pack.
Thermistor bias resistor from VREF to ADIN1.
Description
Analogue to Digital Conversion
Designated ADC-input for battery thermistor.
Customer hardware and software that contain and control
the GR/GS64 Wireless CPU.
Charger Power Supply. Refers to the 500mA current limited
supply that should be connected to the CHG_IN-signal of the
GR/GS64.
GSM Discontinuous Receive mode.
AT-command Final Result Code
Negative Temperature Coefficient Thermistor
Non Volatile Memory
Positive Temperature Coefficient Thermistor
Nominal Thermistor resistance value at 25°C.
Reference voltage used by the interface logic. This signal is
either an output from the Wireless CPU (GS64, GR64001), or
an input to the Wireless CPU (GR64002).
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without prior written agreement.
Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son autorisation préalable