User's Manual

LE910 Hardware User Guide
1vv0301089 Rev.3 – 09-06-2014
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 55 of 79
The LE910 module is provided by a set of Digital Input / Output pins
Input pads can only be read; they report the digital value (high or low) present on the pad at the
read time.
Output pads can only be written or queried and set the value of the pad output.
An alternate function pad is internally controlled by the LE910 firmware and acts depending on
the function implemented.
The following table shows the available GPIO on the LE910:
PAD
Signal
I/O
Function
Type
Drive
strength
Note
C8
GPIO_01
I/O
Configurable GPIO
BH-PD (*)
1.8V
1 mA
C9
GPIO_02
I/O
Configurable GPIO
BH-PD (*)
1.8V
1 mA
C10
GPIO_03
I/O
Configurable GPIO
BH-PD (*)
1.8V
1 mA
C11
GPIO_04
I/O
Configurable GPIO
BH-PD (*)
1.8V
1 mA
B14
GPIO_05
I/O
Configurable GPIO
BH-PD (*)
1.8V
1 mA
C12
GPIO_06
I/O
Configurable GPIO
BH-PD (*)
1.8V
1 mA
C13
GPIO_07
I/O
Configurable GPIO
BH-PD (*)
1.8V
1 mA
K15
GPIO_08
I/O
Configurable GPIO
BH-PD (*)
1.8V
1 mA
L15
GPIO_09
I/O
Configurable GPIO
BH-PD (*)
1.8V
1 mA
G15
GPIO_10
I/O
Configurable GPIO
BH-PD (*)
1.8V
1 mA
(*) BH-PD - Bidirectional digital with CMOS input; High-voltage tolerant; Contains an internal
pull-down device.
NOTE:
In order to avoid a back powering effect it is recommended to avoid having any HIGH logic
level signal applied to the digital pins of the LE910 when the module is powered off or during
an ON/OFF transition.