AT49F020-70JC datasheet(5/10 Pages) ATMEL

Part #	AT49F020-70JC

Description	2-Megabit 256K x 8 5-volt Only CMOS Flash Memory

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Manufacturer	ATMEL [ATMEL Corporation]

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AT49F020

5

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.

Input Test Waveforms and Measurement Level

Output Test Load

Note:

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

AC Read Characteristics

AT49F020-55

AT49F020-70

AT49F020-90

Symbol

Parameter

Min

Max

Min

Max

Min

Max

Units

t

ACC

Address to Output Delay

55

70

90

ns

t

CE

(1)

CE to Output Delay

55

70

90

ns

t

OE

(2)

OE to Output Delay

0

30

0

35

0

40

ns

t

DF

(3)(4)

CE or OE to Output Float

025025025

ns

t

OH

Output Hold from OE, CE or

Address, whichever occurred first

000

ns

Pin Capacitance(1)

(f = 1 MHz, T = 25°C)

Typ

Max

Units

Conditions

C

IN

46

pF

V

IN = 0V

C

OUT

812

pF

V

OUT = 0V

ADDRESS

CE

OUTPUT

OE

OUTPUT VALID

tACC

ADDRESS VALID

HIGH Z

tDF

tCE

tOH

AC

DRIVING

LEVELS

AC

MEASUREMENT

LEVEL

0.0V

1.5V

3.0V

tR, tF < 5 ns

100 pF

1.3K

1.8K

5.0V

OUTPUT

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AT49F020-70JC Datasheet(PDF) 5 Page - ATMEL Corporation

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