AT49F020-55JC 查看數據表（PDF） - Atmel Corporation

零件编号

产品描述 (功能)

生产厂家

AT49F020-55JC

2-Megabit (256K x 8) 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)

ADDRESS

AT49F020

AT49F020-55

Min

Max

55

55

0

30

0

25

0

AT49F020-70

Min

Max

70

70

0

35

0

25

0

AT49F020-90

Min

Max

90

90

0

40

0

25

0

Units

ns

ns

ns

ns

ns

ADDRESS VALID

CE

tCE

OE

OUTPUT

tACC

tDF

tOH

HIGH Z 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

AC

3.0V

DRIVING

LEVELS 0.0V

tR, tF < 5 ns

1.5V

AC

MEASUREMENT

LEVEL

Output Test Load

5.0V

1.8K

1.3K

OUTPUT

PIN

100 pF

Pin Capacitance(1)

(f = 1 MHz, T = 25°C)

Typ

Max

CIN

COUT

Note:

4

6

8

12

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

Units

pF

pF

Conditions

VIN = 0V

VOUT = 0V

5

Share Link: