Users Manual
Quick  Reference  Guide 
REN-CBW  &  EBC-05B1  Quick  Reference  Guide   
15 
2.2 REN-CBW Jumper and Connector List 
Jumpers 
Label 
Function 
Note 
JSPI_WP1 
Write protection   
3 x 1 header, pitch 2.00mm 
JBOOT1 
Boot selector 
2 x 1 header, pitch 2.00mm 
Connectors 
Label 
Function 
Note 
JSPI1 
SPI connector 
4 x 2 header, pitch 2.00mm 
SW1 
Reset button 
SW2 
Buzzer button 
JSWD1 
SWD connector 
4 x 1 header, pitch 2.00mm 
JUART1 
UART Debug ESP32 connector 
4 x 1 header, pitch 2.00mm 
JUART2 
UART Debug M50Q connector   
4 x 1 header, pitch 2.00mm 
JE32DBG1 
Debug ESP32 connector 
2 x 1 header, pitch 2.00mm 
JM50DBG1 
Debug M50Q connector   
4 x 1 header, pitch 2.00mm 
JI2C1 
I2C connector 
2 x 1 header, pitch 2.00mm 
JPWR1 
DC/USB IN connector 










