AT49F040 datasheet(5/10 Pages) ATMEL

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AC Read Characteristics

AT49F040-90

AT49F040-12

AT49F040-15

Symbol

Parameter

Min

Max

Min

Max

Min

Max

Units

tACC

Address to Output Delay

120

150

tCE (1)

CE to Output Delay

120

150

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

Notes: 1. CE may be delayed up to tACC - tCE after the address

transition without impact on tACC .

2. OE may be delayed up to tCE - tOE after the falling

edge of CE without impact on tCE or by tACC - tOE

after an address change without impact on tACC .

3. tDF is specified from OE or CE whichever occurs first

(CL = 5 pF).

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

AC Read Waveforms

(1, 2, 3, 4)

tR, tF < 5 ns

Input Test Waveforms and Measurement Level

Output Test Load

Pin Capacitance

(f = 1 MHz, T = 25°C)

(1)

Typ

Max

Units

Conditions

CIN

VIN = 0V

COUT

812

VOUT = 0V

Note:

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

AT49F040

4-213

AT49F040 Datasheet(PDF) 5 Page - ATMEL Corporation

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