COMe-cTL6 – User Guide Rev. 1.7
// 40
2.4.5.
Single Supply Mode
To start the module in single power supply mode, connect VCC power and open PWR_OK at the high level. VCC can be
8.5 V to 20 V. To power on the module from S5 state, press the power button or reconnect VCC.
Suspend/Standby states are not supported in single power supply mode.
Table 49: Single Supply Mode Settings
State
PWRBTN#
PWR_OK
V5_StdBy
VCC
G3
x/0 V
x/0 V
x/0 V
0 V
G3
→
S0
high
open/high
open
connecting VCC
S5
high
open/high
open
VCC
S5
→
S0
PWRBTN Event
open/high
open
reconnecting VCC
x – Signals are not relevant for the specific power state. It makes no difference if the signal is connected or open.
All ground pins must be connected to the carrier board’s ground plane.
If any of the supply voltages drops below the allowed operating level longer than the
specified hold-up time, all the supply voltages should be shut down and left OFF for a time
long enough to allow the internal board voltages to discharge sufficiently.
If the OFF time is not observed, parts of the board or attached peripherals may work
incorrectly or even suffer a reduction of MTBF.
The minimum OFF time depends on the implemented PSU model and other electrical factors
and needs to be measured individually for each case.
