W49F002 Winbond, W49F002 Datasheet - Page 14
W49F002
Manufacturer Part Number
W49F002
Description
256K X 8 CMOS FLASH MEMORY
Manufacturer
Winbond
Datasheet
1.W49F002.pdf
(23 pages)
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AC Characteristics, continued
Read Cycle Timing Parameters
(V
Write Cycle Timing Parameters
Note: All AC timing signals observe the following guidelines for determining setup and hold times:
Read Cycle Time
Chip Enable Access Time
Address Access Time
Output Enable Access Time
Output Hold from Address Change
CE
OE
CE Low to Active Output
OE Low to Active Output
Address Setup Time
Address Hold Time
Data Setup Time
Data Hold Time
Byte Programming Time
Erase Cycle Time
CE Pulse Width
CC
WE and CE Setup Time
WE and CE Hold Time
OE High Setup Time
OE High Hold Time
WE Pulse Width
WE High Width
= 5.0V 10 , V
(a) High level signal's reference level is V
High to High-Z Output
High to High-Z Output
PARAMETER
PARAMETER
CC
= 0V, T
A
= 0 to 70 C)
IH
SYM. W49F002U-70 W49F002U-90 W49F002U-120 UNIT
and (b) low level signal's reference level is V
T
T
T
T
T
T
T
T
T
RC
CE
AA
OE
CLZ
OLZ
CHZ
OHZ
OH
SYMBOL
MIN.
T
T
T
T
T
T
T
T
T
T
T
T
T
70
- 14 -
0
0
0
-
-
-
-
-
AS
AH
CS
CH
OES
OEH
CP
WP
WPH
DS
DH
BP
EC
MAX.
70
70
35
25
25
-
-
-
-
MIN.
100
100
100
50
50
10
0
0
0
0
0
-
-
MIN.
90
0
0
0
-
-
-
-
-
MAX.
TYP.
0.1
35
IL
90
90
40
25
25
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
.
MIN.
120
0
0
0
-
-
-
-
-
MAX.
W49F002U
0.2
50
-
-
-
-
-
-
-
-
-
-
-
MAX.
120
120
50
30
30
-
-
-
-
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
S
S
nS
nS
nS
nS
nS
nS
nS
nS
nS