5

0189G–EPROM–05/05

AT27C040

Note:

1. See AC Waveforms for Read Operation

10. AC Waveforms for Read Operation

(1)

Notes:

1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise specified.

2. OE may be delayed up to t

3. OE may be delayed up to t

4. This parameter is only sampled and is not 100% tested.

5. Output float is defined as the point when data is no longer driven.

9.

AC Characteristics for Read Operation

Symbol

Parameter

Condition

AT27C040

Units

-70

-90

Min

Max

Min

Max

t

ACC

(1)

Address to Output Delay

CE = OE

= V

IL

70

90

ns

(1)

CE to Output Delay

70

90

ns

t

OE

(1)

OE to Output Delay

CE = V

IL

30

35

ns

t

DF

(1)

OE or CE High to Output Float, Whichever Occurred First

20

20

ns

t

OH

Output Hold from Address, CE or OE, Whichever Occurred

First

00

ns