Datasheet

FIX is an output pin - it is the same pin as the one that drives the red FIX LED. When there is no fix, the FIX pin is going

to pulse up and down once every second. When there is a fix, the pin is low (0V) for most of the time, once every 15

seconds it will pulse high for 200 milliseconds

PPS is a "pulse per second" output. Most of the time it is at logic low (ground) and then it pulses high (3.3V) once a

second, for 50-100ms, so it should be easy for a microcontroller to sync up to it

EN is a true 'power disable' control line you can use to completely cut power to the GPS module. This is good if you

need to run at ultra-low-power modes. By default this is pulled low (enabled). So pull high to disable the GPS.

Coin Battery

The GPS does not

require

but does benefit by having a coin cell backup battery. You can install any "CR1220" sized

battery into the holder. The GPS will automatically detect the battery and use it as a backup for the ephemeris memory

Reset Button