Ublox SARA-R5 Series - General Purpose Input; Output (GPIO); Reserved Pin (RSVD)

SARA-R5 series - System integration manual
UBX-19041356 - R04 System description Page 39 of 118
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1.11 General purpose input / output (GPIO)
SARA-R5 series modules include pins which can be configured as general purpose input/output or to
provide custom functions via u-blox AT commands (for more details see the SARA-R5 series AT
commands manual [2], +UGPIOC, +UGPIOR, +UGPIOW, +UTEST AT commands), as summarized in
Table 9.
Function
Description
Default GPIO
Configurable GPIOs
General purpose
output
Output to set the high or the low digital level
-
GPIO1, GPIO2, GPIO3,
GPIO4, GPIO5, GPIO6
General purpose input
Input to sense high or low digital level
-
GPIO1, GPIO2, GPIO3,
GPIO4, GPIO5, GPIO6
Network status
indication
Output indicating cellular network status: registered, data
transmission, no service
-
GPIO1, GPIO2, GPIO3,
GPIO4, GPIO5, GPIO6
External GNSS supply
enable
4
Output to enable/disable the supply of an external u-blox
GNSS receiver connected to the cellular module by I2C
-
GPIO2
4
External GNSS data
ready
4
Input to sense when an external u-blox GNSS receiver
connected to the module is ready for sending data over I2C
-
GPIO3
4
SIM card detection
Input for SIM card physical presence detection, to optionally
enable / disable SIM interface upon detection of external SIM
card physical insertion / removal
-
GPIO5
Module status
indication
Output indicating module status: power-off or deep-sleep
mode versus idle, active or connected mode
-
GPIO1, GPIO2, GPIO3,
GPIO4, GPIO5, GPIO6
Module operating
mode indication
Output indicating module operating mode: power-off,
deep-sleep or idle mode versus active or connected mode
-
GPIO1, GPIO2, GPIO3,
GPIO4, GPIO5, GPIO6
Ring indicator
Output providing events indicator
-
GPIO1, GPIO2, GPIO3,
GPIO4, GPIO5, GPIO6
Last gasp
Input to trigger last gasp notification
-
GPIO1, GPIO2, GPIO3,
GPIO4, GPIO5, GPIO6
Time pulse output
Output providing accurate time reference, as a sequence
with 1 PPS or as single time pulse, based on the GNSS
system or the LTE system (CellTime®)
-
GPIO6
Time stamp of
external interrupt
input
Input triggering via interrupt the generation of an URC time
stamp over AT serial interface
-
EXT_INT
Fast and safe
power-off
Input to trigger emergency fast shutdown of the module
-
GPIO1, GPIO2, GPIO3,
GPIO4, GPIO5, GPIO6
External GNSS time
pulse
4
Input to receive an accurate time reference, as a sequence
with 1 PPS from an external GNSS system
-
SDIO_CMD
4
External GNSS time
stamp of external
interrupt
4
Output triggering via interrupt the generation of an URC
time stamp from an external GNSS system
-
GPIO4
4
Pin disabled
Tri-state with an internal active pull-down enabled
GPIO1, GPIO2, GPIO3,
GPIO4, GPIO5, GPIO6,
EXT_INT, SDIO_CMD
GPIO1, GPIO2, GPIO3,
GPIO4, GPIO5, GPIO6,
EXT_INT, SDIO_CMD
Antenna dynamic
tuning
Output for real time control of an antenna tuning IC
according to the LTE band used by the module
-
I2S_TXD, I2S_WA
Table 9: SARA-R5 series modules GPIO custom functions configuration
1.12 Reserved pin (RSVD)
SARA-R5 series modules have a pin reserved for future use, marked as RSVD. This pin is to be left
unconnected on the application board.
4
SARA-R500S and SARA-R510S modules only.