Q2686H WAVECOM, Q2686H Datasheet - Page 53

• Manufacturer Part Number: Q2686H
• Description: MODULE, GSM/GPRS, QUAD BAND
• Manufacturer: WAVECOM

Specifications of Q2686H

• Mcu Supported Families: ARM9
• Kit Features: GSM/GPRS Class 10 Quad Band Version, 32MB Of Bursted Flash Memory, 8MB Of SRAM
• Tool / Board Applications: Wireless Communication
• Development Tool Type: CPU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The duration of the firmware power-up sequence depends on:
Other factors have a minor influence
The
command or WIND indicators: the application must detect the end of the
power-up initialization and de-assert ON/~OFF afterwards.
•
•
Note:
1
initialisation phase.
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without
prior written agreement.
WM_PRJ_Q2686_PTS_001-007
If the application manages hardware flow control, the AT command can be sent during the
I
BB+RF
•
•
•
•
Send an “AT” command and wait for the “OK” answer: once the
initialization is complete the AT interface answers « OK » to “AT” message
Wait for the “+WIND: 3” message: after initialization, the Wireless CPU
configured to do so, will return an unsolicited “+WIND: 3” message. The
generation of this message is enabled or disabled via an AT command.
recommended
See also “AT Commands Interface Guide” [7] for more information on
these commands.
= overall current consumption (Base Band + RF part)
the need to perform a recovery sequence if the power has been lost
during a flash memory modification.
the number of parameters stored in EEPROM by the AT commands
received so far
the ageing of the hardware components, especially the flash memory
the temperature conditions
Figure 7: Power-ON sequence (no PIN code activated)
STATE OF THE
Wireless CPU
POWER SUPPLY
INTERNAL RST
confidential ©
way to de-assert the ON/~OFF signal is to use either an AT
ON/OFF
®
Wireless CPU
I
BB+RF
OFF
< 22μA
®
T
(40ms typ)
I
rst
RESET mode
BB+RF
T
(2000ms min)
SIM and Network dependent
on/off-hold
=20 to 40mA
Wireless CPU
Q2686 Wireless CPU
I
BB+RF
ON
<120mA
®
AT answers « OK »
Wireless CPU
READY
Interfaces
®
March 6, 2007
Page: 52 / 87
®
, if
1
.
®