SMSC USB20H04 Instrukcja Użytkownika Pobierz pdf (Strona 12)

4-Port USB 2.0 Hub Controller

Datasheet

Revision 1.63 (03-30-07) Page 12 SMSC USB20H04

DATASHEET

Chapter 5 Limiting Values

Table 5.1 - Absolute Maximum Ratings (In accordance with the Absolute Maximum Rating system (IEC 60134)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

1.8V Supply Voltage

(VDD1.8 and VDDA1.8)

VDD1.8

-0.5

2.5 V

3.3V Supply Voltage

(VDD3.3 and VDDA3.3)

VDD3.3

-0.5

4.0 V

Voltage on any I/O pin

-0.3

5.5 V

Voltage on XTAL1/CLKIN and

XTAL2

-0.3

3.6 V

Storage Temperature TSTG

-40

+125 oC

Table 5.2 - Recommended Operating Conditions

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

1.8V Supply Voltage

(VDD1.8 and VDDA1.8)

DD1.8

1.74 1.8 2.0 V

3.3V Supply Voltage

(VDD3.3 and VDDA3.3)

DD3.3

3.0 3.3 3.6 V

Input Voltage on Digital Pins V

0.0 V

DD3.3

Input Voltage on Analog I/O

Pins (DP, DM)

I(I/O)

0.0 V

DD3.3

Ambient Temperature T

0 +70

Table 5.3 - Recommended Crystal/External Clock Conditions

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Crystal Frequency 24

(+/- 100ppm)

MHz

External Clock Frequency 24

(+/- 100ppm)

MHz

External Clock Duty Cycle 45 50 55 %

External Clock RMS Jitter

XTAL1/CLKIN driven by the

external clock; no connection

at XTAL2; and CLKIN_EN is

high

100 ps

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 34 35

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