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AT49F2048A Datasheet(PDF) 8 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) 8 Page - ATMEL Corporation

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AT49F2048A
Program Cycle Waveforms
Sector or Chip Erase Cycle Waveforms
Notes:
1.
OE must be high only when WE and CE are both low.
2.
For chip erase, the address should be 5555. For sector erase, the address depends on what sector is to be erased. (See
note 4 under Command Definitions.)
3.
For chip erase, the data should be 10H, and for sector erase, the data should be 30H.
Program Cycle Characteristics
Symbol
Parameter
Min
Max
Units
t
BP
Byte/Word Programming Time
50
µ
s
t
AS
Address Setup Time
0
ns
t
AH
Address Hold Time
50
ns
t
DS
Data Setup Time
50
ns
t
DH
Data Hold Time
0
ns
t
WP
Write Pulse Width
50
ns
t
WPH
Write Pulse Width High
40
ns
t
EC
Erase Cycle Time
5
seconds
CE
WE
DATA
A0-A16
tBP
tAH
OE
tAS
tWPH
tDS
tDH
tWP
5555
2AAA
5555
AA
55
A0
ADDRESS
PROGRAM CYCLE
INPUT
DATA
5555
AA
CE
WE
DATA
A0-A16
tAH
OE
tAS
tWPH
tDS
tDH
tWP
5555
2AAA
5555
AA
55
80
5555
2AAA
Note 2
AA
55
Note 3
BYTE/
WORD 0
BYTE/
WORD 1
BYTE/
WORD 2
BYTE/
WORD 3
BYTE/
WORD 4
BYTE/
WORD 5
tEC
(1)


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