SBC-D23
SBC-D23 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by P.Z. - Copyright © 2021 SECO S.p.A.
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EC_UART3_TX: microcontroller USART port #3
C, pin #10.
EC_UART3_RX: microcontroller USART port #3
C, pin #11.
EC_UART3_RTS/DE: microcontroller USART port #3, Request T
12.
EC_UART3_CTS: microcontroller USART port #3
11.
EC_UART3_CLK: microcontroller USART port #3, Clock signal. Conne
10.
Please be aware that UART port #3 on this connector is factory alternative to the RS-
-485 will
not have the signals EC_UART3_TX, EC_UART3_RX and EC_UART_RTS/DE connected to J2.
It is possible to have two dedicated I2C interfaces on an 8-pin 1.25mm pitch connector type Molex p/n
53398-0871 or equivalent.
Mating connector: MOLEX 51021-0800 receptacle with MOLEX 50079-8000 female crimp terminals.
I2C_OUT1_SDA: microcontroller I2C port #1 Data Signal.
I2
These two I2C ports are made available on the CN33 connector through as many Dual I2C Bidirectional I2C bus voltage
level translators, NXP PCA9306GF.
Another possible programmable interface is SPI, available on a 6-pin 1.25mm pitch connector type Molex
p/n 53398-0671 or equivalent.
Mating connector: MOLEX 51021-0600 receptacle with MOLEX 50079-8000 female crimp terminals.
EC_SPI2_CS#: microcontroller SPI port #2, Chip Select
#12.
EC_SPI2_CLK: microcontroller SPI port #2
13.
EC_SPI2_MISO: microcontroller SPI port #2 Master In Slave Out
B, pin #14.
EC_SPI2_MOSI: microcontroller SPI port #2 Master Out Slave In
B, pin #15.
Dual I2C connector CN33
Pin Signal
1
+3P3V_OUT_EC
2
I2C_OUT2_SDA
3
I2C_OUT2_SCL
4
GND
5
+3P3V_OUT_EC
6
I2C_OUT1_SDA
7
I2C_OUT1_SCL
8
GND
SPI connector CN39
Pin Signal
1
+3P3V_OUT_EC
2
EC_SPI2_CS#
3
EC_SPI2_CLK
4
EC_SPI2_MISO
5
EC_SPI2_MOSI
6
GND
