Hardware manual
2.5.3  USB Serial Conversion 
UART that is connected to "USB serial conversion" can communicate with the COM port of PC 
through USB microcomputer (uPD78F0730). 
USB  driver  is  stored  in  the  same  media  as  this  manual.  When  you  encountered  a  warning 
"Windows Logo Test" while installing the USB driver, please select "Continue". 
USB1 
Recommended UART communication specification 
・  Baud rate  115.2Kbps 
・  Data length    8bit (LSB First) 
・  Parity     None 
・  Stop Bit    1bit 
・  Flow Control  None 
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