Owners manual

Electrical Characteristics

9.5. Power up and Power down Sequence

The power rails for H3 is supported by discrete ICs. For the detailed information about discrete ICs, please see to their

application notes.Figure 9-1 shows an example of the power-up sequence for H3 device, it contains

5V,3.3V,2.5V,1.8V,1.5V,1.25V,1.2V power rails.

During the entire power-up sequence, the Reset pin must be held low until all power domains are stable.After all power

domains are on, the Reset signal is pulled high about 260ms later.

Figure 9-1. Power On Sequence

Table 9-6. Power-up Timer Parameter

Parameter

Symbol

Min

Typ

Max

Unit

VCC-5V Ramp Up Rate

0.1

The delay startup time

between VCC-5V and

confidential