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CC1312R: Maximum allowed continuous current through input clamp diodes on CC1312R1 GPIOs?

Sergii Zavgorodnii
Prodigy 25 points
Part Number: CC1312R

Tool/software:

Hello,

I'm working with the CC1312R1F3RGZR chip and I need a documented specification for the maximum *continuous* current allowed through the internal ESD clamp diodes on GPIO pins (diodes to VDD and GND).

- The datasheet provides the voltage limits (–0.3 V to VDD + 0.3 V), implying clamping diodes exist.
- However, it does not specify the maximum continuous or peak clamp current allowed through those diodes.

Could you please clarify:
1. What is the **maximum continuous current** allowed through a clamp diode (e.g. during input overvoltage conditions with series resistor)?
2. Is 2 mA considered safe for long-term operation?
3. Is there any official document or application note that gives this information specifically for the CC13x2/CC26x2 family?

Thank you in advance.

  • +1
    TI__Expert 4860 points

    Hi Sergii,

    Continuous current flow through the clamp diodes is not recommend. The intention of the diodes is to protect the device against electrostatic discharges.

    The ESD protection complies with the JEDEC standards mentioned in the datasheet:

    Is there a specific reason you would like to have current flow through the diodes?