ECE1200 datasheet(61/87 Pages) MICROCHIP

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DS00003093C Draft-page 61

ECE1200

8.2

Operational Specifications

8.2.1

POWER SUPPLY OPERATIONAL CHARACTERISTICS

8.2.2

PCI AND PCI-24 PIN TYPE DC ELECTRICAL CHARACTERISTICS

The specifications for the PCI-compliant pins are listed here from the PCI Standard directly, to include only those spec-

ifications that are relevant to LPC, SER_IRQ and CLKRUN# pin functions.The PCI-24 pin type is the same as the rest

of the PCI pins for these specifications.

Note:

Weak pull-up/pull-down functionality is not provided internally for these pins. They must be provided exter-

nally, as specified in the relevant LPC and PCI standards. See Section 4.2, "References," on page 20.

8.2.3

LCLK PIN TYPE DC ELECTRICAL CHARACTERISTICS

The specifications for the LPC Clocks are listed here. These pin characteristics are not part of the PCI specification,

since they are outputs instead of inputs.

TABLE 8-3:

POWER SUPPLY OPERATING CONDITIONS

Symbol

Parameter

MIN

TYP

MAX

Units

VTR_CORE_18

1.8V Core Logic Power Supply with

respect to ground

1.71

1.80

1.89

VTR_18

1.8V I/O Power Supply with respect to

ground

1.71

1.80

1.89

VTR_33

3.3V I/O Power Supply with respect to

ground

3.135

3.3

3.465

Note:

The specification for the VTR_CORE_18, VTR_18 and VTR_33 supplies represents +/- 5% from nominal.

TABLE 8-4:

PCI AND PCI-24 DC ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Conditions

MIN

MAX

Units

Notes

Input High Voltage

Vih

0.7 x

VTR_33

+ 0.5

Input Low Voltage

Vil

-0.5

0.3 x

VTR_33

Input Pull-up Voltage

Vipu

0.7 x

VTR_33

Voltage guaranteed to

avoid internal Receiver

leakage.

Input Leakage Current

Iil

Vin > 0V and

Vin < VTR_33

+/- 10

Applies both to inputs

and to hi-Z output states

of I/O pins.

Output High Voltage

Voh

Iout = -500 uA

0.9 x

VTR_33

Output Low Voltage

Vol

Iout = 1500 uA

0.1 x

VTR_33

Input Pin Capacitance

Cin

TABLE 8-5:

LCLK DC ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Conditions

MIN

TYP

MAX

Units

Notes

Output High Voltage

VOH

IOH = -16mA

2.4

Output Low Voltage

VOL

IOL = 16mA

0.4

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