SBC-C61
SBC-C61 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: S.B. - Reviewed by N.P. - Copyright © 2021 SECO S.p.A.
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3.3.12
I/O Connectors
The SC61 board offers the possibility of expanding its functionalities by using some additional
interfaces, available on two dedicated 10 pin connectors, CN51 and CN55, which are connectors
type Molex p/n 501645-1020.
Mating connector MOLEX 501646-1000 receptacle with MOLEX 501647, 501648 or 503096
series female crimp terminals.
The pinouts of these connectors are shown in the tables on the left.
Here following a complete description of the interfaces made available on these connectors:
VOUT_EN: Output enable signal, active high signal, VDD_3V3 electrical level.
I2C_SCL_EXT_3V3: External I2C Bus clock line. Output signal, electrical level +3V3_OUT with a 1K5
Ω
pull-up resistor. It is
managed by the processor
’
s I2C controller #3.
I2C_SDA_EXT_3V3: External I2C Bus data line. Bidirectional signal, electrical level +3V3_OUT with a 1K5
Ω
pull-up resistor. It is
managed by the processor
’
s I2C controller #3.
OUT_OD: Open Drain output, max 12V, max current 250mA
GPIO_OUT1, GPIO_OUT1: General purpose I/O signals, electrical levels VDD_3V3. Each one of these signals is filtered using
a passive low-pass RC filter (
Τ
= 1µs) and protected with a D5V0F2U3LP TVS Diode.
PWM3_3V3: Filtered generic PWM output, electrical level VDD_3V3. This signal is filtered using a passive low-pass RC filter (
Τ
= 0.2ns) and protected with a D5V0F2U3LP TVS Diode. It is managed by i.MX8M Mini processor
’
s Signal PWM3_OUT.
PWM4_3V3: Filtered generic PWM output, electrical level VDD_3V3. This signal is filtered using a passive low-pass RC filter (
Τ
= 0.2ns) and protected with a D5V0F2U3LP TVS Diode. It is managed by i.MX8M Mini processor
’
s Signal PWM4_OUT.
OUT1..OUT8: the interfaces available on these pins depends on the factory alternative purchased. The possible alternative
groups of 4x GPIOs
RS-232 ports
RS-485 ports
CAN ports
This means that there are 16 possible configurations of these interfaces. Please be aware that the board
’
s configuration with
I/O Connector #1 CN51
Pin
Signal
1
+3V3_OUT
2
VOUT_EN
3
I2C_SDA_EXT_3V3
4
I2C_SCL_EXT_3V3
5
OUT_OD
6
OUT1
7
OUT2
8
OUT3
9
OUT4
10
GND
I/O Connector #2 CN55
Pin
Signal
1
+3V3_OUT
2
PWM3_3V3
3
PWM4_3V3
4
GPIO_OUT1
5
GPIO_OUT2
6
OUT5
7
OUT6
8
OUT7
9
OUT8
10
GND
