USB3613 datasheet(45/57 Pages) MICROCHIP

45 / 57 page

USB 2.0 Hi-Speed 3-Port Hub Controller Optimized for Portable Applications

Datasheet

 2014 Microchip Technology Inc.

DS00001714A-page 45

9.2

Operating Conditions**

VBAT Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.9 V to +5.5 V

VDDCOREREG Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note 9.5

Power Supply Rise Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note 9.6

Ambient Operating Temperature in Still Air (TA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note 9.7

Note 9.5

+1.6 V to +2.0 V when VDDCOREREG is connected to an external +1.8V power supply,

+3.0 V to +3.6 V when VDDCOREREG is connected to VDD33.

Note 9.6

The power supply rise time requirements vary dependent on the usage of the external

reset (RESET_N). If RESET_N is asserted at power-on, the power supply rise time must

be 10mS or less (tRT(max) = 10mS). If RESET_N is not used at power-on (tied high), the

power supply rise time must be 1mS or less (tRT(max) = 1mS). Higher voltage supplies must

always be at an equal or higher voltage than lower voltage supplies. Figure 9.1 illustrates

the supply rise time requirements.

Note 9.7

0oC to +70oC for commercial version, -40oC to +85oC for industrial version.

**Proper operation of the device is guaranteed only within the ranges specified in this section.

Figure 9.1 Single/Dual Supply Rise Time Models

t10%

10%

90%

Voltage

tRT

t90%

Time

100%

3.3V/VBAT

VSS

VBAT

t10%

10%

90%

Voltage

tRT

t90%

Time

100%

3.3V

VSS

VBAT

90%

100%

1.8V

VDDCOREREG

Single Supply Rise Time Model

Dual Supply Rise Time Model

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