Fan Connectors - Seco SBC Series User Manual

59 ---
61 ---
63 GND
65 ---
67 ---
69 GND
71 ---
73 ---
75 GND

3.3.14 FAN connectors

FAN Connector - CN20
Pin Signal
1 GND
2 FAN_POWER
3 FAN_TACHO_IN
4 FAN_PWM
Optional FAN Connector -
CN21
Pin Signal
1 GND
2 FAN_POWER
3 FAN_TACHO_IN
FAN_TACHO_IN: tachometric input from the FAN to the embedded microcontroller, +3.3V_S electrical level signal with 10kΩ pull-up resistor.
SBC-A80-eNUC
SBC-A80-eNUC User Manual - Rev. First Edition: 1.0 - Last Edition: 1.2 - Author: S.B. - Reviewed by G.G Copyright © 2017 SECO S.r.l.
60 M.2_I2C_SCL
62 M.2_ALERT#
64 ---
66 ---
68 ---
70 ---
72 +3.3V_A
74 +3.3V_A
Depending on the usage model of SBC-A80-eNUC, for critical applications/environments on SBC-A80-eNUC it is available a 4-
pin dedicated connector for an external +12V
The default FAN Connector is a 4-pin single line SMT connector, type MOLEX 53261-0471 or equivalent, with
pinout shown in the table on the left.
Mating connector: MOLEX 51021-0300 receptacle with MOLEX 50079-8000 female crimp terminals.
Alternatively, as a factory option, the SBC-A80-eNUC module can be equipped with a 3-pin single line SMT connector, type
MOLEX 53261-0371 or equivalent, with pinout shown in the table on the left.
Mating connector: MOLEX 51021-0300 receptacle with MOLEX 50079-8000 female crimp terminals.
Please be aware that the use of an external fan depends strongly on customer's application/installation.
Please refer to chapter 5.1 for considerations about thermal dissipation.
FAN_POWER: +12V_A derived power rail for FAN.
FAN_PWM: PWM output from the embedded microcontroller to the FAN (4-pin connector only).
M.2_I2C_SDA: I2C Bus data line. Bidirectional signal, electrical level +3.3V_A with a 2K2Ω
pull-up resistor. It is managed by SoC's I2C controller #0.
M.2_I2C_SCL: I2C Bus clock line. Bidirectional signal, electrical level +3.3V_A with a 2K2Ω
pull-up resistor. It is managed by SoC's I2C controller #0.
M.2_ALERT#: I2C Bus Alert. Input signal, electrical level +3.3V_A with a 100KΩ pull-up
resistor. It is managed by SoC's SM Bus Alert Signal. This signal is connected only on boards
with PCB rev. C and greater
FAN.
DC
36