User Manual

GM862-QUAD / PY Hardware User Guide
1vv0300748 Rev. 5 - 20/09/07
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 56 of 68
10 General Purpose I/O
The general purpose I/O pins can be configured to act in three different ways:
• input
• output
• alternate function (internally controlled)
The following GPIO are available on the GM862-QUAD/PY:
Pin Signal I/O Function Type
Input /
output
current
Default
State
ON_OFF
state
State
during
Reset
Note
34 GPI1 I GPI01 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
28 GPO2 O GPO02 Configurable GPIO CMOS 2.8V 1uA / 1mA OUTPUT LOW
Open Collector
Alternate function
(JDR)
46 GPIO3 I/O GPIO03 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT HIGH HIGH 47K Pull Up
47 GPIO4 I/O GPIO04 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT HIGH HIGH
4.7K Pull Up
Alternate function
(RF Transmission
Control)
48 GPIO5 I/O GPIO05 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
Alternate function
(RFTXMON)
49 GPIO6 I/O GPIO06 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT fig. 01 HIGH
Alternate function
(ALARM)
50 GPIO7 I/O GPIO07 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
Alternate function
(BUZZER)
32 GPIO8 I/O GPIO08 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
34 GPIO9 I/O GPIO09 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
38 GPIO10 I/O GPIO10 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
40 GPIO11 I/O GPIO11 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT HIGH HIGH 4.7K Pull Up
42 GPIO12 I/O GPIO12 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT HIGH HIGH 47K Pull Up
44 GPIO13 I/O GPIO13 Configurable GPIO CMOS 2.8V 1uA / 1mA INPUT LOW
Input pins can only be read and report the digital value (high or low) present on the pin at the read
time; output pins can only be written or queried and set the value of the pin output; an alternate
function pin is internally controlled by the GM862-QUAD/PY firmware and acts depending on the
function implemented.