User's Manual

HE910 Hardware User Guide
1vv0300925 Rev.28 – 2015-06-24
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 72 of 72
14 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 1 mA INPUT
Alternate function STAT
LED
C9
GPIO_02 I/O Configurable GPIO CMOS 1.8V 1 mA INPUT
C10
GPIO_03 I/O Configurable GPIO CMOS 1.8V 1 mA INPUT
C11
GPIO_04 I/O Configurable GPIO CMOS 1.8V 1 mA INPUT
B14
GPIO_05 I/O Configurable GPIO CMOS 1.8V 1 mA INPUT
C12
GPIO_06 I/O Configurable GPIO CMOS 1.8V 1 mA INPUT
C13
GPIO_07 I/O Configurable GPIO CMOS 1.8V 1 mA INPUT
K15
GPIO_08 I/O Configurable GPIO CMOS 1.8V 1 mA INPUT
VDD_IO1 has to be
connected to 1V8_SEL
L15
GPIO_09 I/O Configurable GPIO CMOS 1.8V 1 mA INPUT
VDD_IO1 has to be
connected to 1V8_SEL
G15
GPIO_10 I/O Configurable GPIO CMOS 1.8V 1 mA INPUT
VDD_IO1 has to be
connected to 1V8_SEL