User's Manual

HC864-AUTO Hardware User Guide
1vv0300946 Rev.4 – 2012-12-27
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 52 of 77
60 TGPIO_14 I/O
GPIO14
Configurable
GPIO
CMOS
1.8V
2mA INPUT LOW LOW
61 TGPIO_15 I/O
GPIO15
Configurable
GPIO
CMOS
1.8V
2mA INPUT LOW LOW
75 TGPIO_16 I/O
GPIO16
Configurable
GPIO
CMOS
1.8V
2mA INPUT LOW LOW
71 TGPIO_17 I/O
GPIO17
Configurable
GPIO
CMOS
2.6V
2mA INPUT LOW LOW
65 TGPIO_18 I/O
GPIO18
Configurable
GPIO
CMOS
2.6V
2mA INPUT LOW LOW
56 TGPIO_19 I/O
GPIO19
Configurable
GPIO
CMOS
1.8V
2mA INPUT LOW LOW
58 TGPIO_20 I/O
GPIO20
Configurable
GPIO
CMOS
1.8V
2mA INPUT LOW LOW
72 TGPIO_21 I/O
GPIO21
Configurable
GPIO
CMOS
1.8V
2mA INPUT HIGH HIGH
64 TGPIO_22 I/O
GPIO22
Configurable
GPIO
CMOS
1.8V
2mA INPUT LOW LOW
Not all GPIO pads support all these three modes:
• GPIO6 supports all three modes and can be input, output, alarm output (Alternate
function)
Some alternate functions for HC864-AUTO may be added if needed.
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 module when is powered OFF or during an
ON/OFF transition.