Manual
GE863 Hardware User Guide
1vv0300783 Rev.0 - 10/06/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 52 of 80
8 General Purpose I/O
The general purpose I/O pads can be configured to act in three different ways:
• input
• output
• alternate function (internally controlled)
The following GPIO are available on the GE863:
Ball Signal I/O Function Type
Input /
output
current
Default
State
ON_OFF
state
State
during
Reset
Note
34 GPIO1 I/O GPIO01 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
33 GPIO2 I/O GPIO02 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
Alternate function
(JDR)
55 GPIO3 I/O GPIO03 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 1 1 47K Pull Up
32 GPIO4 I/O GPIO04 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 1 1
4.7K Pull Up
Alternate function
(RF Transmission
Control)
53 GPIO5 I/O GPIO05 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
Alternate function
(RFTXMON)
54 GPIO6 I/O GPIO06 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT fig. 01 HIGH
Alternate function
(ALARM)
51 GPIO7 I/O GPIO07 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
Alternate function
(BUZZER)
6 GPIO8 I/O GPIO08 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
5 GPIO9 I/O GPIO09 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
4 GPIO10 I/O GPIO10 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
3 GPIO11 I/O GPIO11 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 1 1 4.7K Pull Up
2 GPIO12 I/O GPIO12 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 1 1 47K Pull Up
1 GPIO13 I/O GPIO13 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
60 GPIO14 I/O GPIO14 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
71 GPIO15 I/O GPIO15 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
64 GPIO16 I/O GPIO16 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
59 GPIO17 I/O GPIO17 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
76 GPIO18 I/O GPIO18 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT 0
Input pads can only be read and 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 GE863 firmware and acts depending on the function
implemented.