Data Sheet

PHYSICAL CHARACTERISTICS
I/O CHARACTERISTICS
GM01Q DATASHEET PROPRIETARY 12
SEQUANS Communications
3.5 I/O Characteristics
The voltage and current characteristics of the various IO pads of the GM01Q
versus IO bank supply voltage are illustrated in the tables below.
Caution: Note that the V
oh
values in the tables below do not apply to
GPIOs configured in open drain mode. GPIOs can be individually
configured in open drain mode. When in open drain mode they
either drive the line to V
ol
, or leave it floating, to be pulled up by
an external pullup resistance. The PCB designer must ensure that
the voltage on these pads never exceeds V
ih
of the IO group to
which they belong.
Refer to GM01Q Pin List to know the type of IO pad used on every
termination.
• The Minimum values for I
ol
and I
oh
should not be exceeded to guarantee
that the logical level are not spoiled for each pad type.
• The Nominal values for I
ol
and I
oh
represent the nominal values for the pad
type. They are provided for information only.
•The Maximum values for I
ol
and I
oh
represent the maximal values for the
pad type. They are provided for information only.
• By default, during boot time:
– The pad defined as GPIO as default function, with BIDIR or
BIDIR_WAKE types, are configured as input, output disabled, with no
internal pull-up and no internal pull-down.
– The pads defined as RFDATA as alternate function are configured as
input, output disabled, with no internal pull-up and no internal
pull-down.
Contact Sequans's Support Team for detail on persistent AT Commands
availability to change these default behaviors.
Table 3-4: DC Characteristics for Digital IOs, Voltage 1.8 V - BIDIR and IN Types
Parameter Drive Strength Min. Nom. Max. Unit
V
IL
Input Low Voltage
00.54V
V
IH
Input High Voltage
1.26 3.6 V
V
OL
Output Low Voltage
00.45V
V
OH
Output High Voltage
1.35 1.8 V