srec_cat in.bin -bin -o out.hex -intel -obs 16 http://srecord.sourceforge.net/man/man1/srec_cat.html
−Output_Block_Size number
This option may be used to specify the exact number of data bytes to appear in each output record. There are format-specific limitations on this value, you will get an error if the value isn’t valid. If you need to control the maximum number of characters on a line of text output, use the −Line_Length option.