AT49F040T datasheet(8/10 Pages) ATMEL

Part #	AT49F040T

Description	4-Megabit 512K x 8 5-volt Only CMOS Flash Memory

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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8 / 10 page

Toggle Bit Characteristics

(1)

Symbol

Parameter

Min

Typ

Max

Units

tDH

Data Hold Time

10

ns

tOEH

OE Hold Time

10

ns

tOE

OE to Output Delay (2)

ns

tOEHP

OE High Pulse

150

ns

tWR

Write Recovery Time

0

ns

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

2. See tOE spec in AC Read Characteristics.

Data Polling Characteristics

(1)

Symbol

Parameter

Min

Typ

Max

Units

tDH

Data Hold Time

10

ns

tOEH

OE Hold Time

10

ns

tOE

OE to Output Delay (2)

ns

tWR

Write Recovery Time

0

ns

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

2. See tOE spec in AC Read Characteristics.

Toggle Bit Waveforms

(1, 2, 3)

Notes: 1. Toggling either OE or CE or both OE and CE will

operate toggle bit. The tOEHP 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.

Data Polling Waveforms

4-216

AT49F040

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AT49F040T Datasheet(PDF) 8 Page - ATMEL Corporation

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