at49f008a ATMEL Corporation, at49f008a Datasheet - Page 11

• Manufacturer Part Number: at49f008a
• Description: At49f008a 8-megabit 1m X 8/ 512k X 16 Flash Memory
• Manufacturer: ATMEL Corporation

Program Cycle Characteristics
Program Cycle Waveforms
Sector or Chip Erase Cycle Waveforms
Notes:
1199G–FLASH–11/02
Symbol
t
t
t
t
t
t
t
t
BP
AS
AH
DS
DH
WP
WPH
EC
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.
3. For chip erase, the data should be 10H, and for sector erase, the data should be 30H.
(See note 4 under Command Definitions.)
Parameter
Byte/Word Programming Time
Address Setup Time
Address Hold Time
Data Setup Time
Data Hold Time
Write Pulse Width
Write Pulse Width High
Erase Cycle Time
A0-A18
DATA
WE
A0-A18
OE
CE
DATA
WE
OE
CE
(1)
t
AS
t AS
5555
5555
t AH
t AH
WORD 0
BYTE/
AA
AA
t DS
t WP
t DS
t WP
2AAA
2AAA
t DH
WORD 1
BYTE/
55
t DH
55
5555
t WPH
WORD 2
5555
BYTE/
80
PROGRAM CYCLE
t WPH
A0
5555
WORD 3
BYTE/
AA
ADDRESS
INPUT DATA
2AAA
WORD 4
AT49F008A(T)/8192A(T)
BYTE/
55
Note 2
Min
50
50
50
40
0
0
t BP
WORD 5
Note 3
BYTE/
t EC
Typ
10
5555
AA
Max
50
5
seconds
Units
µs
ns
ns
ns
ns
ns
ns
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