I need a long cable between ICP programmer and the target MCU. What should I do?
Please follow the document “Filter for long cables”: https://softlog.com/documents/Filter%20for%20long%20cables.pdf
Target cable with twisted pairs
Step 1: Use separate unshielded wires to minimize capacitance and reduce crosstalk. Step 2: If the problem persists, add a capacitor of approximately 22 pF (acceptable range 18–27 pF) between CLOCK and GND on the nails, as close as possible to the MCU. Step 3: If the issue still exists, add a similar capacitor (≈22 […]
Unstable communication when using multiple GANG programmers in a chain
Step 1: Verify that all channels in all programmer units have the same DLL/Command Line Support (-D) setting. It must be “Yes for all” or “No for all” — mixing is not allowed. (Other options do not affect communication.)Check this via Options → OEM → Summary of Options/Families… Step 2: Confirm that all programmer units […]
What is the maximum cable length?
(A) Maximum Cable Length The maximum cable length depends on several parameters: – Cable structure: Unshielded, separate wires are recommended to reduce crosstalk and capacitance. – Microcontroller type: Some microcontrollers are highly sensitive to small voltage spikes on the clock, data, or reset/VPP lines. – Target PCB design: Components placed near the target microcontroller and […]
