Specifications

Product Technical Specification & Customer Design Guidelines
Interfaces
3.15 SERVICE Signal
A specific control pin SERVICE is available to download the Q64 only if the standard
XMODEM download, controlled by AT command, is not possible.
Specific PC software, provided by Wavecom, is needed to perform this download,
especially when downloading for the first time the Flash memory.
3.15.1 Features
The SERVICE pin must be connected to the VCC for this specific download.
Electrical characteristics of the signal
Parameter I/O type Minimum Maximum Unit
V
IL
CMOS 0.5 V
BOOT Operating mode Comment
0 Normal use No download
0 Download XMODEM AT command for Download
AT+WDWL
1 Download specific Need WAVECOM PC software
This SERVICE pin must be at low level for normal use or XMODEM download. The
ON/OFF pin must be in low level during downloading.
However, in order to make development and maintenance phases easier, it is highly
recommended to add a test point, a jumper or a switch to VCC power supply.
Electrical characteristics of the signal
Singal Parameter Minimum Typ Maximum Unit
SERVICE Input voltage 1.5 VCC V
3.15.2 Pin Description
Signal Pin number I/O I/O type Description
SERVICE 58 I - Download mode selection
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WA_DEV_Q64_PTS_001-003 January 9, 2009