Power-Up Sequence

JH-7110 has 3 power supplies, VDD, AVDL, and AVDH. VDD and AVDL are both core power supplies and while separate pins are used for noise isolation purposes.

The recommended power sequence is that from digital core voltage to analog I/O voltage and from low voltage level to high voltage level. This is not considered a constraint, but instead, a guideline, as it could result in the best-case operating scenario, where the leakage currents during power up are kept to a minimum.

The following diagram shows the recommended power-on sequence of different power groups.

Figure 1. Power Up Sequence
Table 1. Power Up Sequence Intervals
Sequence Interval
T1 100 us
T2 300-500 us
T3 50-100 us
T4 300-500 us
T5 300-500 us
T6 50-100 us
T7 >10 ms