AN279
Rev 0.7 | 30/32
www.hoperf.com
7
When WriterConfig applied, the USB
communication is abnormal and the
interface is slow with refreshing speed of
one second or lower.
Reason
：
USB communication abnormal
Solution
：
Turn off WriterConfig and reinsert the
USB. Run WriterConfig again. If it is still abnormal,
please restart the computer
GND
VDD
VPP
Figure 18. Measure the failing possibility of burning among VDD, VPP and GND
