AT49F002 datasheet(13/16 Pages) ATMEL

Part #	AT49F002

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

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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13

3354F–FLASH–2/05

AT49F002A(N)(T)

Notes:

1. These parameters are characterized and not 100% tested.

2. See t

OE spec in AC Read Characteristics.

21. Data Polling Waveforms

Notes:

1. These parameters are characterized and not 100% tested.

2. See tOE spec in AC Read Characteristics.

23. Toggle Bit Waveforms

(1)(2)(3)

Notes:

1. Toggling either OE or CE or both OE and CE will operate toggle bit. The t

OEHP specification must be met by the toggling

input(s).

2. Beginning and ending state of I/O6 will vary.

3. Any address location may be used but the address should not vary.

20. Data Polling Characteristics

(1)

Symbol

Parameter

Min

Typ

Max

Units

t

DH

Data Hold Time

10

ns

t

OEH

OE Hold Time

10

ns

tOE

OE to Output Delay

(2)

ns

t

WR

Write Recovery Time

0

ns

HIGH Z

An

WE

CE

OE

I/O7

A0-A17

tOEH

tOE

tDH

tWR

22. Toggle Bit Characteristics

(1)

Symbol

Parameter

Min

Typ

Max

Units

t

DH

Data Hold Time

10

ns

t

OEH

OE Hold Time

10

ns

tOE

OE to Output Delay

(2)

ns

t

OEHP

OE High Pulse

50

ns

t

WR

Write Recovery Time

0

ns

WE

CE

OE

I/O6

tOEH

HIGH Z

tDH

tOE

tWR

tOEHP

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AT49F002 Datasheet(PDF) 13 Page - ATMEL Corporation

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