W49F002U-12B

Manufacturer Part NumberW49F002U-12B
ManufacturerWinbond Electronics
W49F002U-12B datasheet
 


Specifications of W49F002U-12B

Density2MbAccess Time (max)120ns
Interface TypeParallelBoot TypeTop
Address Bus18bOperating Supply Voltage (typ)5V
Operating Temp Range0C to 70CPackage TypePDIP
Program/erase Volt (typ)5VSync/asyncAsynchronous
Operating Temperature ClassificationCommercialOperating Supply Voltage (min)4.5V
Operating Supply Voltage (max)5.5VWord Size8b
Number Of Words256KSupply Current50mA
MountingThrough HolePin Count32
Lead Free Status / Rohs StatusNot Compliant  
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AC Characteristics, continued
Read Cycle Timing Parameters
(V
= 5.0V 10%, V
= 0V, T
= 0 to 70 C)
DD
DD
A
PARAMETER
Read Cycle Time
Chip Enable Access Time
Address Access Time
Output Enable Access Time
#CE Low to Active Output
#OE Low to Active Output
#CE High to High-Z Output
#OE High to High-Z Output
Output Hold from Address Change
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
Note: All AC timing signals observe the following guidelines for determining setup and hold times:
(a) High level signal's reference level is V
SYM.
W49F002U-70
W49F002U-90 W49F002U-120
MIN.
MAX.
MIN.
T
70
-
90
RC
T
-
70
-
CE
T
-
70
-
AA
T
-
35
-
OE
T
0
-
0
CLZ
T
0
-
0
OLZ
T
-
25
-
CHZ
T
-
25
-
OHZ
T
0
-
0
OH
SYMBOL
MIN.
T
0
AS
T
50
AH
T
0
CS
T
0
CH
T
0
OES
T
0
OEH
T
100
CP
T
100
WP
T
100
WPH
T
50
DS
T
10
DH
T
-
BP
T
-
EC
and (b) low level signal's reference level is V
IH
- 16 -
W49F002U
UNIT
MAX.
MIN.
MAX.
-
120
-
nS
90
-
120
nS
90
-
120
nS
40
-
50
nS
-
0
-
nS
-
0
-
nS
25
-
30
nS
25
-
30
nS
-
0
-
nS
TYP.
MAX.
UNIT
-
-
nS
-
-
nS
-
-
nS
-
-
nS
-
-
nS
-
-
nS
-
-
nS
-
-
nS
-
-
nS
-
-
nS
-
-
nS
35
50
S
0.1
0.2
S
.
IL