VSC8540XMVRT-HC datasheet(65/87 Pages) MICROCHIP

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DS60001603E-page 65

VSC8540RT

8.3

DC Characteristics

The following sections discuss DC characteristics.

8.3.1

VDDMAC, VDDIO, AND VDDMDIO (2.5V)

The following table shows the DC specifications for the pins referenced to VDDMAC, VDDIO, and VDDMDIO when it is

set to 2.5V. The specifications listed in the following table are valid only when VDD1 = 1.0V, VDD1A = 1.0V, and

VDD25A = 2.5V.

8.3.2

VDDMAC, VDDIO, AND VDDMDIO (3.3V)

The following table shows the DC specifications for the pins referenced to VDDMAC, VDDIO, and VDDMDIO when it is

set to 3.3V. The specifications listed in the following table are valid only when VDD1 = 1.0V, VDD1A = 1.0V, and

VDD25A = 2.5V.

8.3.3

VDDMAC AND VDDMDIO (1.5V)

The following table shows the DC specifications for the pins referenced to VDDMAC and VDDMDIO when it is set to

1.5V. The specifications listed in the following table are valid only when VDD1 = 1.0V, VDD1A = 1.0V, VDD25A = 2.5V,

and VDDIO = 2.5V or 3.3V.

3.3V power supply voltage for VDDMAC, VDDIO, and VDDM-

DIO

V33

3.135

3.3

3.465

1.8V power supply voltage for VDDMAC and VDDMDIO

V18

1.71

1.8

1.89

1.5V power supply voltage for VDDMAC and VDDMDIO

V15

1.425

1.5

1.575

1.2V power supply voltage for VDDMDIO

V12

1.14

1.2

1.26

VSC8540RT ambient operating temperature

–55

+125

°C

TABLE 8-3:

VDDMAC, VDDIO, AND VDDMDIO (2.5 V) DC CHARACTERISTICS

Parameter

Symbol Minimum

Typical

Maximum

Unit

Condition

Output high voltage

VOH

2.0

IOH = –1.0 mA

Output low voltage

VOL

0.4

IOL = 1.0 mA

Input high voltage

VIH

1.85

3.6

Input high voltage

VIH

1.85

3.1

SMI pins (MDC, MDIO)

Input high voltage

VIH

1.85

2.75

VDDMAC-referenced pins

Input low voltage

VIL

–0.3

0.7

Input leakage current

IILEAK

–85

µA

Internal resistor included

Output leakage current

IOLEAK

–85

µA

Internal resistor included

TABLE 8-4:

VDDMAC, VDDIO, AND VDDMDIO (3.3 V) DC CHARACTERISTICS

Parameter

Symbol

Minimum

Typical

Maximum

Unit

Condition

Output high voltage

VOH

2.6

IOH = –1.0 mA

Output low voltage

VOL

0.4

IOL = 1.0 mA

Input high voltage

VIH

2.25

3.6

Input low voltage

VIL

–0.3

0.8

Input leakage current

IILEAK

–135

135

µA

Internal resistor included

Output leakage current

IOLEAK

–135

135

µA

Internal resistor included

TABLE 8-5:

VDDMAC AND VDDMDIO DC CHARACTERISTICS (1.5 V)

Parameter

Symbol Minimum

Typical

Maximum

Unit

Condition

Output high voltage

VOH

1.2

IOH =–1mA

TABLE 8-2:

RECOMMENDED OPERATING CONDITIONS (CONTINUED)

Parameter

Symbol Minimum Typical Maximum Unit

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