W49F002U Datasheet, PDF (14/23 Pages) Winbond – 256K X 8 CMOS FLASH MEMORY

W49F002U
AC Characteristics, continued
Read Cycle Timing Parameters
(VCC = 5.0V ±10%, VCC = 0V, TA = 0 to 70° C)
PARAMETER
SYM. W49F002U-70 W49F002U-90 W49F002U-120 UNIT
MIN. MAX. MIN. MAX. MIN. MAX.
Read Cycle Time
TRC
70
-
90
-
120
-
nS
Chip Enable Access Time
TCE
-
70
-
90
-
120 nS
Address Access Time
TAA
-
70
-
90
-
120 nS
Output Enable Access Time
TOE
-
35
-
40
-
50
nS
CE Low to Active Output
TCLZ
0
-
0
-
0
-
nS
OE Low to Active Output
TOLZ
0
-
0
-
0
-
nS
CE High to High-Z Output
TCHZ
-
25
-
25
-
30
nS
OE _{High to High-Z Output}
TOHZ
-
25
-
25
-
30
nS
Output Hold from Address Change
TOH
0
-
0
-
0
-
nS
Write Cycle Timing Parameters
PARAMETER
Address Setup Time
Address Hold Time
WE and CE Setup Time
WE and CE Hold Time
OE High Setup Time
OE High Hold Time
CE Pulse Width
WE Pulse Width
WE High Width
Data Setup Time
Data Hold Time
Byte Programming Time
Erase Cycle Time
SYMBOL
TAS
TAH
TCS
TCH
TOES
TOEH
TCP
TWP
TWPH
TDS
TDH
TBP
TEC
MIN.
0
50
0
0
0
0
100
100
100
50
10
-
-
TYP.
-
-
-
-
-
-
-
-
-
-
-
35
0.1
Note: All AC timing signals observe the following guidelines for determining setup and hold times:
(a) High level signal's reference level is VIH and (b) low level signal's reference level is VIL.
MAX.
-
-
-
-
-
-
-
-
-
-
-
50
0.2
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
µS
S
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