User's Manual

HE910 Hardware User Guide
1vv0300925 Rev.9 – 07-02-2012
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 58 of 80
12 General Purpose I/O
The HE910 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 HE910 firmware and acts
depending on the function implemented.
The following table shows the available GPIO on the HE910:
PAD
Signal
I/O
Function
Type
Drive
strength
Default
State
Note
C8
GPIO_01
I/O
Configurable GPIO
CMOS 1.8V
0.1 mA
INPUT
Alternate function STAT LED
C9
GPIO_02
I/O
Configurable GPIO
CMOS 1.8V
0.1 mA
INPUT
C10
GPIO_03
I/O
Configurable GPIO
CMOS 1.8V
0.1 mA
INPUT
C11
GPIO_04
I/O
Configurable GPIO
CMOS 1.8V
0.1 mA
INPUT
B14
GPIO_05
I/O
Configurable GPIO
CMOS 1.8V
0.1 mA
INPUT
C12
GPIO_06
I/O
Configurable GPIO
CMOS 1.8V
0.1 mA
INPUT
C13
GPIO_07
I/O
Configurable GPIO
CMOS 1.8V
0.1 mA
INPUT
K15
GPIO_08
I/O
Configurable GPIO
CMOS 1.8V
0.1 mA
INPUT
VDD_IO1 has to be connected
to VIO1_1V8
L15
GPIO_09
I/O
Configurable GPIO
CMOS 1.8V
0.1 mA
INPUT
VDD_IO1 has to be connected
to VIO1_1V8
G15
GPIO_10
I/O
Configurable GPIO
CMOS 1.8V
0.1 mA
INPUT
VDD_IO1 has to be connected
to VIO1_1V8