AT49F002A 查看數據表（PDF） - Atmel Corporation

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AT49F002A

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

Atmel Corporation 

AT49F002A(N)(T)

10. AC Read Characteristics

Symbol

tACC

tCE(1)

tOE(2)

tDF(3)(4)

tOH

Parameter

Address to Output Delay

CE to Output Delay

OE to Output Delay

CE or OE to Output Float

Output Hold from OE, CE or Address, whichever

occurred first

AT49F002A(N)(T)-55

Min

Max

55

55

0

30

0

25

0

Units

ns

ns

ns

ns

ns

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

ADDRESS

ADDRESS VALID

CE

tCE

OE

tOE

t DF

tACC

tOH

OUTPUT

HIGH Z

OUTPUT

VALID

Notes:

1. CE may be delayed up to tACC - tCE after the address transition without impact on tACC.

2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE or by tACC - tOE after an address change

without impact on tACC.

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

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

9

3354G–FLASH–3/05

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