User's Guide

HE863 Family Hardware User Guide
1vv0300891 Rev.5
- 2011-03-18
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights
Reserved. Page 38 of 89
6. Power Supply
The power supply circuitry and board layout are a very
important part in the full product design and they strongly
reflect on the product overall performances. Read carefully
the requirements and the guidelines that will follow for a
proper design.
6.1. Power Supply Requirements
The HE863 Family power requirements are:
Power Supply
Nominal Supply Voltage 3.8V
Max Supply Voltage 4.2V
Supply Voltage Range
3.4V – 4.2V
HE863-EUD/NAD/AUD/EUG/NAG/AUG/EUR/NAR
Mode Average(mA) Mode Description
IDLE mode
Standby mode; no call in progress;
GPS OFF (GPS for HE863-EUG/NAG/AUG only)
AT+CFUN=0 - 60uA Shutdown mode(Power off)
AT+CFUN=1
WCDMA 34
Normal mode; full functionality of the
module
GSM 33
AT+CFUN=4
WCDMA 33
Disabled TX and RX; modules is not
registered on the network
GSM 33
AT+CFUN=5
WCDMA 4/2*
CFN=5 full functionality with power
saving;
Module registered on the network can
receive incoming call and SMS
GSM 4/2*
WCDMA TX and RX mode with GPS OFF GPS OFF (GPS for HE863-EUG/NAG/AUG only)
WCDMA Voice 600 WCDMA voice channel
WCDMA data 600 WCDMA data channel
HSDPA 680 HSDPA data channel
HSUPA 610 HSUPA data channel
GSM TX and RX mode with GPS OFF GPS OFF (GPS for HE863-EUG/NAG/AUG only)
GSM Voice 250 GSM voice channel
GPRS Class12 650 GPRS data channel
EDGE Class12 470 EDGE data channel
* Worst/best case depends on network configuration and is not under
module control.