USB 2.0 Hi-Speed 2-Port Hub Controller
Datasheet
DS00001701A-page 40
2014 Microchip Technology Inc.
9.2 Operating Conditions**
+3.3 V Supply Voltage (VDD33, VDDA33) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+3.0 V to 3.6 V
Power Supply Rise Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note 9.4
Ambient Operating Temperature in Still Air (T
A
). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Note 9.5
Note 9.4 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 (t
RT(max)
= 10mS). If RESET_N is not used at power-on (tied high), the
power supply rise time must be 1mS or less (t
RT(max)
= 1mS). Figure 9.1 illustrates the
supply rise time requirements.
Note 9.5 0
o
C to +70
o
C for commercial version, -40
o
C to +85
o
C for industrial version.
**Proper operation of the device is guaranteed only within the ranges specified in this section.
Figure 9.1 Supply Rise Time Model
t
10%
10%
90%
Voltage
t
RT
t
90%
Time
100%
3.3V
VSS
VDDA33
