21

AT49LL080

3273C–FLASH–5/03

Notes:

1. PCI specification output load is used.

3. I

LPC Interface AC Timing Specifications

Notes:

1. PCI components must work with any clock frequency between nominal DC and 33 MHz. Frequencies less than16 MHz may

be guaranteed by design rather than testing.

2. Applies only to rising edge of signal.

Clock Waveform

LPC Interface AC Input/Output Specifications

Symbol

Parameter

Condition

Min

Max

Units

Switching Current High

mA

0.3 V

-17.1 (V

0.7 V

Note 2

(Test Point)

mA

I

Switching Current Low

V

16 V

CC

mA

0.6 V

-17.1 (V

Note 3

(Test Point)

V

38 V

CC

mA

I

cl

Low Clamp Current

-3 < V

-25 + (V

mA

High Clamp Current

mA

slewr

Output Rise Slew Rate

0.2 V

(1)

14

V/ns

slewf

Output Fall Slew Rate

0.6 V

(1)

14

V/ns

Clock Specification

Symbol

Parameter

Condition

Min

Max

Units

t

CYC

CLK Cycle Time

(1)

30

∞

ns

CLK High Time

11

ns

t

LOW

CLK Low Time

11

ns

-

CLK Slew Rate

peak-to-peak

1

4

V/ns

-RST or INIT Slew Rate

(2)

50

mV/ns

(minimum)