Data Sheet

PHYSICAL CHARACTERISTICS
I/O CHARACTERISTICS
CB410L DATASHEET PROPRIETARY 12
SEQUANS Communications
2.5 I/O Characteristics
The voltage and current characteristics of the various IO pads of the CB410L
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 pull-up resistance. The PCB designer must ensure that
the voltage on these pads never exceeds V
ih
of the IO group to
which they belong.
Table 2-4 details the various pad types as listed in CB410L signals list.
Refer to CB410L 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.
Table 2-4: Pad Types Detail
Pad Type Description
Maximum
Input High Voltage
analog analog (or power for powers and ground for grounds) Not Applicable
BIDIR_DDR 1.8 V in/out. Refer to Table 2-6 for DC IO characteristics. V
IH
max = 1.9 V
BIDIR_PD 1.8 V in/out with software controlled internal
pull-down. Refer to Table 2-5 for DC IO characteristics.
V
IH
max = 3.6 V
BIDIR_PD_SLEW_SCHMITT 1.8 V slew-rate controlled in/out with Schmitt trigger
and software controlled internal pull-down.Refer to
Table 2-5 for DC IO characteristics.
V
IH
max = 3.6 V
BIDIR_PU 1.8 V in/out with software controlled internal
pull-up.Refer to Table 2-5 for DC IO characteristics.
V
IH
max = 3.6 V
IN 1.8V input. V
IH
max = 3.6 V
IN_PD 1.8 V input with software controlled internal
pull-down.Refer to Table 2-5 for DC IO characteristics.
V
IH
max = 3.6 V
IN_PU 1.8V input with software controlled internal pull-up. V
IH
max = 3.6 V
OUT 1.8 V output.Refer to Table 2-5 for DC IO characteristics. V
IH
max = 3.6 V