AT49F2048A-70RI Просмотр технического описания (PDF) - Atmel Corporation

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производитель

AT49F2048A-70RI

2-megabit (256K x 8/128K x 16) 5-volt Only CMOS Flash Memory

Atmel Corporation 

AC Read Characteristics

Symbol

tACC

tCE(1)

tOE(2)

tDF(3)(4)

tOH

Parameter

Address to Output Delay

CE to Output Delay

OE to Output Delay

CE or OE to Output Float

Output Hold from OE, CE or Address, whichever

occurred first

AC Read Waveforms(1)(2)(3)(4)

AT49F2048A-70

Min

Max

70

70

30

0

25

0

AT49F2048A-90

Min

Max

90

90

0

30

0

25

0

Units

ns

ns

ns

ns

ns

ADDRESS

CE

OE

OUTPUT

ADDRESS VALID

tCE

tOE

tACC

HIGH Z

tDF

tOH

OUTPUT

VALID

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.

Input Test Waveforms and Measurement Level

Output Test Load

tR, tF < 5 ns

Pin Capacitance

(f = 1 MHz, T = 25°C)(1)

Typ

Max

CIN

COUT

Note:

4

6

8

12

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

6 AT49F2048A

Units

pF

pF

30

Conditions

VIN = 0V

VOUT = 0V

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