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AT49F040 Datasheet(PDF) 5 Page - ATMEL Corporation

Part No. AT49F040
Description  4 Megabit 512K x 8 5-volt Only CMOS Flash Memory
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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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
90
120
150
ns
tCE (1)
CE to Output Delay
90
120
150
ns
tOE (2)
OE to Output Delay
0
40
0
50
0
70
ns
tDF (3, 4)
CE or OE to Output Float
0
25
0
30
0
40
ns
tOH
Output Hold from OE, CE or
Address, whichever occurred
first
00
0
ns
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
46
pF
VIN = 0V
COUT
812
pF
VOUT = 0V
Note:
1. This parameter is characterized and is not 100% tested.
AT49F040
4-213




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