Hi, thank you for your replay. i connect the chip and C232HM as follow: my Chip ------------C232HM (1)CS# ----- CS (2)SO ----- TDI (3)WP# ----- (not connected) (4)VSS ----- GND (5)SI ----- TDO (6)SCK ----- CLK (7)HOLD----- (not connected) (8)VDD ----- 3.3V Wherein did I make my mistake? how do i connect it? can you give me a tip? thank you 2015-07-03 3:42 GMT+08:00 Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>:

Hi,

your chip is not connected properly.

-- Kind regards/Mit freundlichen Grüßen, Stefan Tauner