Rainbow-electronics AT27BV512 User Manual download pdf (Page 5)

AT27BV512

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/V

may be delayed up to t

-t

after the falling edge of CE without impact on t

3. OE

may be delayed up to t

ACC

-t

after the address is valid without impact on t

ACC

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.

6. When reading a 27BV256, a 0.1

F capacitor is required across V

and ground to suppress spurious voltage transients.

AC Characteristics for Read Operation

= 2.7V to 3.6V and 4.5V to 5.5V

Symbol Parameter Condition

AT27BV512

Units

-70 -90 -12 -15

Min Max Min Max Min Max Min Max

ACC

(3)

Address to Output Delay CE = OE/V

= V

70 90 120 150 ns

(2)

CE to Output Delay OE/V

= V

70 90 120 150 ns

(2)(3)

OE/V

to Output Delay CE = V

50 50 50 60 ns

(4)(5)

OE/V

or CE High to

Output Float, whichever

occurred first

40 40 40 50 ns

Output Hold from

Address, CE

or OE/V

whichever occurred first

0000 ns

1 2 3 4 5 6 7 8 9 10 11 12

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Rainbow-electronics AT27BV512 User Manual Page 5

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