Question about quick discharge time of 3V3 and 1V8 for custom carrier board

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin Nano
,
1

Hi NV team,

As noted on design guide for Orin Nano/NX 《DG-10931-001_v1.2.pdf》, the quick discharge time for 3.3V is within 1.5ms while for 1.8V within 4ms. Our custom carrier board measured data is around 3.4ms for 3.3V and <2ms for 1.8V, my question is 1.5ms/4ms is a must or could be waived?

Here the time duration for 3.3V drop is from SYS_RST to 1.0V(0.3*3.3V) as shown in below pic.

tek00004
tek00004800×480 16.7 KB

Jasper
20241018

3

As said in DG: If the carrier board 3.3V or 1.8V supplies are not low in the times shown below, discharge may be required. See the Orin Nano DevKit carrier board reference design for examples. The discharge circuits should be tuned to meet the timing requirements.

4

OK，I will decrease the discharge resistor impedance to satify above time limit.

thanks！

Jasper
20241021

5

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.