diff --git a/openocd/cc32rs512.cfg b/openocd/cc32rs512.cfg
index 96a25d8..2a97548 100644
--- a/openocd/cc32rs512.cfg
+++ b/openocd/cc32rs512.cfg
@@ -1,7 +1,7 @@
 reset_config trst_and_srst
 source [find interface/ftdi/jtagkey.cfg]
 #jtag_rclk 1000
-adapter_khz 1000
+adapter_khz 100
 
 
 set _CHIPNAME cc32rs512