CON11 does not support hot swapping. Please remove the SIM card after having
turned off the power of this product.
11.10. CON13 RTC Backup Interface 1
CON13 is a backup interface for real-time clock functionality. Please use it when you want to retain time data while
power is off for an extended period.
Mounted Connector
SMTU1220-LF/Renata SA
Compatible Battery
Example
CR1220, BR1220, etc.
Table 11.14. CON13 Signals
Pin Number
Pin Name
I/O
Description
1
RTC_BAT1
Power
Power supply input for backup of real-time clock
2
GND
Power
Power (GND)
The average monthly gap of the real-time clock differs depending on the RTC ver-
sion in the board information. The relationship between the versions and the average
monthly difference (reference value) at an ambient temperature of 25°C is shown
below.
Table 11.15. RTC Versions and Average Monthly Difference (Reference Value)
at 25°C Ambient Temperature
RTC Version
Average Monthly Difference at 25°C Ambient Temperature
1.0
Approx. 300 seconds
1.1 or later
Approx 90 seconds
The RTC version can be checked with the following command.
[armadillo ~]# dmesg | grep bmic_rtc
[ 1.639111] bmic_rtc 3-0011: version: 1.1
Even if the RTC version is 1.0, you can update to RTC version 1.1 or later by
applying installation disk v20161026_iotg3 or later (in-
stall_disk_sd_20161026_iotg3.img or later). For details on how to use the installa-
tion disc, please refer to Section 8.1, “Using the Installation Disc”.
11.11. CON14 Power Input Interface 1
Mounted Connector
PJ-102AH/CUI
Armadillo-IoT Gateway G3Product Manual - INTL
Interface Specifications
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