Hello,
we’d like to use LC79D and have the module sleeping between tracking sessions. Comparing to L86 or L96 it seems that sleep/standby with memory backed up (so wakeup can be considered as a hot start) consumes a lot of energy. Those modules can be put into Backup mode that keeps RTC and memory running, so waking up is a hot start. It seems that LC79D has Sleep mode that has the same functionality, but the consumption is much higher:
- L96 Backup mode with RTC and memory backed up: 7uA @3.3V
- LC79D Sleep mode with RTC and memory backed up: 200uA @1.8V
- LC79D Standby mode with only RTC running: 17uA @1.8V
Important text from L96 Hardware design document describing its Backup mode:
The backed-up memory in RTC domain which contains all the necessary GNSS information for quick start-up and a small amount of user configuration variables is alive. Due to the backed-up memory, EASY technology is available.
Is it possible to achive similar current consumption with LC79D? We cannot use LTO download because the device does not have data connection that would support big enough data transfers.