Understanding the High Speed Input (normally clock in) pin on the CW1173 ChipWhisperer-Lite

Hi, i’m fairly new to the world of electronics and i’m trying to perform a side channel attack on a arduino pro mini with my ChipWhisperer-lite, throughout my research I found out that it was easier to output the internal clock of the arduino than to change it to an external sources. As i was looking through the ChipWhisperer-Lite Docs i found the pin 4 described as, “High Speed Input (normally clock in)” is this pin getting a clock input and synchronize the capture with it ? Or am i just not understanding it correctly ?


Yup, HS1 is usually used to synchronize to an external clock. You can use it with the scope.clock.adc_src = "extclk_x4" (or x1 if you need to use the same clock speed for the ADC and the target).