SQ864
GPRS Terminal
7
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www.sequoia.co.uk
Rev 2.1.4 Jan 2011
Wireless Technology
Experience The Freedom
Table 5 Mini USB Connections
The maximum/minimum input/output voltage allowed on the I/O pins is given in table 6
Table 6 GPIO minimum/maximum voltage
5.3 Digital Output
•
Switch voltage is VIN high side switch
•
Max output 400mA
•
Short circuit protected
•
ESD protected
•
Under full control of embedded application
The following command has to be used to initialise and to set the digital output:
AT#GPIO=5,1,1 switch output on
AT#GPIO=5,0,1 switch output off
Mini USB Pin
Signal on Telit GC864-PY Module
Voltage level
Function
1
GPIO5
CMOS 2.6V
GPIO
2
GPIO7
CMOS 2.6V
GPIO
3
GPIO8
CMOS 2.6V
GPIO
4
GPIO11
CMOS 2.6V
GPIO
5
GPIO12
CMOS 2.6V
GPIO
CASE
GND
0v
GND
Signal Name
Parameter
Minimum
Maximum
GPIO_05
Input high level
2.1V
5.5V
GPIO_07 to GPIO_12
Input high level
2.1V
3.3V
GPIO_05 to GPIO_12
Input low level
0V
0.5V
GPIO_05 to GPIO_12
Output high level
2.2V
3.0V
GPIO_05 to GPIO_12
Output low level
0V
0.5V
