Hardware Manual
Table Of Contents
- WE865-DUAL Hardware User Guide
- Contents
- 1 Overview
- 2 Mechanical description
- 3 Pin-out
- 4 Electrical description
- 5 Thermal design guidelines
- 6 PCB layout design guidelines
- 7 Antenna
- 8 Integration with the GE863-PRO3
- 9 WE865-DUAL - Evaluation kit
- 10 Mounting the WE865-DUAL on the application board
- 11 Moisture sensitivity
- 12 Conformity assessment issues
- 13 Safety recommendations
- 14 Document change log
WE865-DUAL HW User Guide
1vv0300787 Rev. 1 - 03/10/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 15 of 48
4.1.1.1 Current consumption
CURRENT CONSUMPTION @ 3.8V at 25 °C
Operating mode Typ Unit
Continuous Receive 100 mA
Continuous Transmit (maximum output power) 180 mA
Stand-by (receive beacons every 100 ms) 5 mA
Deep Sleep 3 mA
Shut-down mode <1 mA
Table 5
NOTE: continuous receive and transmit mode measures were taken at channel 6.
4.1.1.2 Shut-down mode
In order to minimize the current consumption it is possible to completely shut-down the WE865-DUAL.
That is achieved by acting on the relevant signal outside the module, which directly acts on the power
device enable/Shut-down signals.
The shut-down is achievable by driving low both the EN_B* (ball D1) and EN_A* (ball B1) signals, to
be connected together.
As EN_B* (ball D1) and EN_A* (ball B1) are internally connected to pull-up, do not drive these signals
during normal operation.
LOGIC CONFIGURATION
signal ball Shut-down mode Operating mode
EN_A* B1 to be driven low internally pulled-up
2
EN_B* D1 to be driven low internally pulled-up
1
Table 6
2
If the shut-down mode is not used, no external connection is needed.