EPX-C414/Configuration
v1.0
www.winsystems.com
Page 23
7.10.3 FAN Fan Power Connector
A 3-pin connector is provided for power and control of a CPU fan. On-board circuitry is
provided to monitor the CPU temperature and control the fan appropriately. The fan
connector uses a Molex 22-11-2032 mating connector.
Layout and Pin Reference
7.10.4 BAT External Battery Connector
An optional external battery, connected at BAT, supplies the EPX-C414 board with
standby power for the real-time clock, and CMOS setup RAM and SRAM (applicable
models only). An extended temperature lithium battery is available from WinSystems,
part number BAT-LTC-E-36-16-2 or BAT-LTC-E-36-27-2.
A power supervisory circuit contains the voltage sensing circuit and an internal power
switch to route the battery or standby voltage to the circuits selected for backup. The
battery automatically switches ON when the V
CC
of the systems drops below the battery
voltage and back OFF again when V
CC
returns to normal.
Layout and Pin Reference
Pin
Name
1
TACH
2
VDD
3
GND
Ŀ
Ŀ
Ŀ
1 2 3
Pin
Name
1
GND
2
VBAT
3
NC (no connect)
1
WARNING: BAT-LTC-E-36-16-2 or BAT-LTC-E-36-27-2 must be connected at BAT.
Improper installation of the battery could result in explosive failure. Please be careful
to note correct connection at location BAT.
