J202 SoM_IoT_2V0

Owned by Steffen Schröder
Last updated: Mar 04, 2022
2 min read

Figure 6 display the highlighted 9 pin connector J202 on bottom side of SoM_IoT_2V0 printed circuit board. This connector allocate the large-scale integrated circuit R-IN32M3-EC with external SPI and additional SYNC signals. Furthermore the power supply pins VCC33 and GROUND are connected on J202.

 

Figure 6: SoM_IoT_2V0 J202

 

Pin 1 (VCC33) and pin 2 (GND) should be connect with external DC voltage source. The SoM_IoT is specified for an input voltage range of 3,15V DC to 3,45V DC.

Note: Higher voltage (above 3.6V DC) at power supply pins may cause damage this module!

 

Pin 3 has chip select (CSICS00) function for R-IN32M3-EC Clocked Serial Interface H 1 (CSIH1) which works in Slave Mode at CSIHTCSS1 channel 0. The used chip select sink for this R-IN32M3-EC based module is Port P70. This pin is also connected to interrupt valid ports P12 and P13. For interrupts and peripheral modules see also User’s Manual R18UZ0007EJ1100 chapter 17 Clocked Serial Interface H (CSIH)

 

Pin 4 connect the RESETZ ball of R-IN32M3-EC. So an external reset signal can initialize the CPU core and the internal peripheral modules.

 

Pin 5 complies the MISO function for SPI connection. This pin connect the R-IN32M3-EC CSIH serial data output signal 0 at Port P47 (CSISO0).

 

Pin 6 complies the MOSI function for SPI connection. This pin connect the R-IN32M3-EC CSIH serial data input signal 0 at Port P46 (CSISI0).

 

Pin 7 complies the SCK function for SPI connection. This channel 0 CSIH signal connect the serial clock of R-IN32M3-EC at Port P45.

 

Pin 8 (CATSYNC0) connect Port P11 of R-IN32M3-EC and is able to use as GPIO or EtherCAT Sync0 signal connection.

 

Pin 9 (CATSYNC1) connect Port P10 of R-IN32M3-EC and is able to use as GPIO or EtherCAT Sync1 signal connection.