AT28C040 datasheet(7/15 Pages) ATMEL

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0542F–PEEPR–2/09

AT28C040

10. 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 tACC.

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.

11. Input Test Waveforms and Measurement Level

R, tF < 5 ns

12. Output Test Load

Note:

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

AC Read Characteristics

Symbol

Parameter

AT28C040-20

Units

Min

Max

tACC

Address to Output Delay

200

tCE

(1)

CE to Output Delay

200

tOE

(2)

OE to Output Delay

tDF

(3)(4)

CE or OE to Output Float

tOH

Output Hold from OE, CE or Address, whichever occurred first

13. Pin Capacitance

f = 1 MHz, T = 25°C

(1)

Symbol

Typ

Max

Units

Conditions

410

IN = 0V

OUT

812

OUT = 0V

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