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AT49BV2048A Datasheet(PDF) 8 Page - ATMEL Corporation

Part # AT49BV2048A
Description  2-megabit (256K x 8/128K x 16) Single 2.7-volt Battery-Voltage??Flash Memory
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT49BV2048A Datasheet(HTML) 8 Page - ATMEL Corporation

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8
AT49BV/LV2048A
1914D–FLASH–03/02
AC Read Waveforms(1)(2)(3)(4)
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 t
CE -tOE after the falling edge of CE without impact on tCE or by tACC -tOE after an address change
without impact on t
ACC.
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 Characteristics
Symbol
Parameter
AT49LV2048A-70
AT49BV2048A-90
AT49BV2048A-12
Units
Min
Max
Min
Max
Min
Max
tACC
Address to Output Delay
70
90
120
ns
t
CE
(1)
CE to Output Delay
70
90
120
ns
tOE
(2)
OE to Output Delay
0
35
0
40
0
50
ns
tDF
(3)(4)
CE or OE to Output Float
0
25
0
25
0
30
ns
t
OH
Output Hold from OE,CE or Address,
whichever occurred first
00
0
ns
tRO
RESET to Output Delay
800
800
800
ns
OE
RESET
CE
t
CE
t
OE
t
RO
t
ACC
t
DF
t
OH
ADDRESS
HIGH Z
OUTPUT
OUTPUT
ADDRESS VALID
VALID


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