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AT49F2048A Datasheet(PDF) 6 Page - ATMEL Corporation

Part No. AT49F2048A
Description  2-megabit 256K x 8/ 128K x 16 5-volt Only CMOS Flash Memory
Download  13 Pages
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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AT49F2048A Datasheet(HTML) 6 Page - ATMEL Corporation

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6
AT49F2048A
AC Read Waveforms
(1)(2)(3)(4)
Notes:
1.
CE may be delayed up to t
ACC - tCE after the address transition without impact on tACC.
2.
OE may be delayed up to t
CE - tOE after the falling edge of CE without impact on tCE or by tACC - tOE after an address change
without impact on tACC.
3.
t
DF is specified from OE or CE, whichever occurs first (CL = 5 pF).
4.
This parameter is characterized and is not 100% tested.
AC Read Characteristics
Symbol
Parameter
AT49F2048A-70
AT49F2048A-90
Units
Min
Max
Min
Max
t
ACC
Address to Output Delay
70
90
ns
tCE
(1)
CE to Output Delay
70
90
ns
t
OE
(2)
OE to Output Delay
30
0
30
ns
t
DF
(3)(4)
CE or OE to Output Float
0
25
0
25
ns
tOH
Output Hold from OE, CE or Address, whichever
occurred first
00
ns
ADDRESS
OUTPUT
HIGH Z
OUTPUT
OE
CE
tACC
tOE
tDF
tOH
tCE
VALID
ADDRESS VALID
Note:
1. This parameter is characterized and is not 100% tested.
Pin Capacitance
(f = 1 MHz, T = 25
°C)(1)
Typ
Max
Units
Conditions
CIN
46
pF
VIN = 0V
C
OUT
812
pF
V
OUT = 0V
Output Test Load
30
Input Test Waveforms and Measurement Level
t
R, tF < 5 ns


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