AT49F002 datasheet(9/20 Pages) ATMEL

Part #	AT49F002

Description	2-megabit (256K x 8) 5-volt Only Flash Memory

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Manufacturer	ATMEL [ATMEL Corporation]

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9

3354F–FLASH–2/05

AT49F002A(N)(T)

11. AC Read Waveforms (1)(2)(3)(4)

Notes:

1. CE may be delayed up to t

ACC - tCE after the address transition without impact on tACC.

2. OE may be delayed up to t

CE - tOE after the falling edge of CE without impact on tCE or by tACC - tOE after an address change

without impact on t

ACC.

3. t

DF is specified from OE or CE whichever occurs first (CL = 5 pF).

4. This parameter is characterized and is not 100% tested.

10. AC Read Characteristics

Symbol

Parameter

AT49F002A(N)(T)-55

Units

Min

Max

t

ACC

Address to Output Delay

55

ns

tCE

(1)

CE to Output Delay

55

ns

t

OE

(2)

OE to Output Delay

0

30

ns

t

DF

(3)(4)

CE or OE to Output Float

0

25

ns

t

OH

Output Hold from OE, CE or Address, whichever

occurred first

0ns

ADDRESS

OUTPUT

HIGH Z

OUTPUT

OE

CE

tACC

tOE

t DF

tOH

tCE

VALID

ADDRESS

VALID

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