SPI Header
This sets the ZOE-M8Q apart from the SAM-M8Q. On the underside of the product as mentioned above, is a
jumper that can be closed to allow for SPI communication. The header is labeled for the pinout for SPI.
Broken Out Pins
There are four other pins broken out: Pulse per second
PPS
, Reset
RST
, Safeboot
SAFE
, and finally the interrupt
pin
INT
. The first pin
PPS
outputs pulse trains syncronized with the GPS or UTC time grid. The signal defaults to
once per second but is configurable over a wide range. Read the
u-blox Receiver Protocol Specification
in the
Resources tab for more information. The reset pin resets the chip. The next pin,
SAFE
is used to start up the IC in
safe boot mode. The final pin
INT
can be used to wake the chip from power save mode.
