Real-Time Clock (Rtc); Nvme; Features On Request - Kontron COMh-caRP User Manual

Table 27: Watchdog signal on COM-HPC connector

3.5.5 Real-Time Clock (RTC)

The RTC keeps track of the current time accurately. The RTC's low power consumption enables the
RTC to continue operation and keep time using a lower secondary source of power while the primary
source of power is switched off or unavailable.
The COMh-caRP supports typical RTC values of 3 V and less than 10 μA. When powered by the main
power supply on-module regulators generate the RTC voltage, to reduce RTC current draw. The RTC's
battery voltage range is 2.8 V to 3.47 V.
It is not recommended to run a system without a RTC battery on the carrier board. Even
if the RTC battery is not required to keep the actual time and date when main power is
off, a missing RTC battery will cause other side effects such as longer boot times. Intel
processor environments are generally designed to rely on RTC battery voltage.

3.5.6 NVME

On some COM-HPC modules a PCIe NVMe NAND Flash SSD (with a capacity up to 1TB) can be
populated optionally.
On COMh-caRP a PCIe NVMe NAND Flash SSD (with a capacity up to 1TB) can be populated optionally,
connected to the PCIEX4_B[0:3] lanes instead of COMh PCIe[12:16] lanes.
There are different types of NVMe SSDs available from different vendors.
For further information on offered resp. released types and their particular feature set,
contact Kontron

3.5.7 Features on Request

NVME can be equipped
2nd SPI BIOS flash on-module for failover (not implemented on Standard Modules)
www.kontron.com
Support.
COMh-caRP User Guide
26/60