AT49F008-90TC Просмотр технического описания (PDF) - Atmel Corporation

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AT49F008-90TC

8-Megabit (1M x 8) 5-volt Only Flash Memory

Atmel Corporation 

AT49F008

Data Polling Characteristics(1)

Symbol

Parameter

Min

Typ

Max

tDH

Data Hold Time

10

tOEH

OE Hold Time

10

tOE

OE to Output Delay(2)

tWR

Write Recovery Time

0

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

2. See tOE spec in AC Read Characteristics.

Data Polling Waveforms

WE

CE

tOEH

OE

tDH

tOE

tWR

HIGH Z

I/O7

A0-A19

An

An

An

An

An

Toggle Bit Characteristics(1)

Symbol

Parameter

Min

Typ

Max

tDH

Data Hold Time

10

tOEH

OE Hold Time

10

tOE

OE to Output Delay(2)

tOEHP

OE High Pulse

150

tWR

Write Recovery Time

0

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

2. See tOE spec in AC Read Characteristics.

Toggle Bit Waveforms(1)(2)(3)

WE

Units

ns

ns

ns

ns

Units

ns

ns

ns

ns

ns

CE

tOEH

OE

tOEHP

tDH

I/O6

tOE

tWR

HIGH Z

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.

9

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