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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Auto-select Codes (High Voltage Method)
DESCRIPTION
Manufacturer ID: Winbond
Device ID: W49F002U
(Top Boot Block)
Notes:
1. SA = Sector Address, X = Don t Care. Sector Protection Verification: 01h (protected); 00h (unprotected).
2. The hardware SID read function is not included in all parts; please refer to Ordering Information for details.
Hardware Sequence Flags
OPERATION
Standard Mode
Embedded Program Algorithm
Embedded Erase Algorithm
Note: DQ7 require a valid address when reading status information. Refer to the appropriate subsection for further details.
(1)
Command Definition
No. of
1th Cycle
COMMAND
Cycles
Addr. Data
DESCRIPTION
Read
1
AIN
Chip Erase
6
5555
Sector Erase
6
5555
4
5555
Byte Program
Boot Block Lockout
6
5555
Product ID Entry
3
5555
(2)
3
5555
Product ID Exit
(2)
Product ID Exit
1
XXXX
Notes:
1. Address Format: A14
A0 (Hex); Data Format: DQ7
2. Either one of the two Product ID Exit commands can be used.
3. SA means: Sector Address
If SA is within 3C000 to 3FFFF (Boot Block address range), and the Boot Block programming lockout feature is activated,
nothing will happen and the device will go back to read mode after 100nS.
If the Boot Block programming lockout feature is not activated, this command will erase Boot Block.
If SA is within 3A000 to 3BFFF (Parameter Block1 address range), this command will erase PB1.
If SA is within 38000 to 39FFF (Parameter Block2 address range), this command will erase PB2.
If SA is within 20000 to 37FFF (Main Memory Block1 address range), this command will erase MMB1.
If SA is within 00000 to 1FFFF (Main Memory Block2 address range), this command will erase MMB2.
OTHER
#CE
#OE
#WE
ADD
V
V
V
X
IL
IL
IH
V
V
V
X
IL
IL
IH
DQ7
(Note)
#DQ7
0
2nd Cycle
3rd Cycle
Addr. Data
Addr. Data
DOUT
AA
2AAA
55
5555
80
AA
2AAA
55
5555
80
AA
2AAA
55
5555
A0
AA
2AAA
55
5555
80
AA
2AAA
55
5555
90
AA
2AAA
55
5555
F0
F0
DQ0 (Hex)
- 8 -
W49F002U
A9
A1
A0
DQ7
TO DQ0
V
V
V
DAh
ID
IL
IL
V
V
V
0Bh
ID
IL
IH
DQ6
Toggle
Toggle
4th Cycle
5th Cycle
6th Cycle
Addr. Data
Addr. Data
Addr. Data
5555
AA
2AAA
55
5555
(3)
5555
AA
2AAA
55
SA
AIN
DIN
5555
AA
2AAA
55
5555
10
30
40