W49F002U-12B Winbond Electronics, W49F002U-12B Datasheet - Page 8

• Manufacturer Part Number: W49F002U-12B
• Manufacturer: Winbond Electronics

Specifications of W49F002U-12B

• Density: 2Mb
• Access Time (max): 120ns
• Interface Type: Parallel
• Boot Type: Top
• Address Bus: 18b
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Package Type: PDIP
• Program/erase Volt (typ): 5V
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Word Size: 8b
• Number Of Words: 256K
• Supply Current: 50mA
• Mounting: Through Hole
• Pin Count: 32
• Lead Free Status / Rohs Status: Not Compliant

Auto-select Codes (High Voltage Method)
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
Note: DQ7 require a valid address when reading status information. Refer to the appropriate subsection for further details.
Command Definition
Notes:
1. Address Format: A14
2. Either one of the two Product ID Exit commands can be used.
3. SA means: Sector Address
Manufacturer ID: Winbond
Device ID: W49F002U
(Top Boot Block)
Read
Chip Erase
Sector Erase
Byte Program
Boot Block Lockout
Product ID Entry
Product ID Exit
Product ID Exit
Standard Mode
DESCRIPTION
COMMAND
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.
DESCRIPTION
(2)
(2)
Cycles
No. of
Embedded Program Algorithm
Embedded Erase Algorithm
OPERATION
A0 (Hex); Data Format: DQ7
1
6
6
4
6
3
3
1
(1)
AIN
XXXX
5555
5555
5555
5555
5555
5555
Addr. Data
1th Cycle
#CE
V
V
DOUT
IL
IL
AA
AA
AA
AA
AA
AA
F0
#OE
2AAA
2AAA
2AAA
2AAA
2AAA
2AAA
V
V
Addr. Data
2nd Cycle
IL
IL
DQ0 (Hex)
#WE
V
V
55
55
55
55
55
55
- 8 -
IH
IH
Addr. Data
5555
5555
5555
5555
5555
5555
3rd Cycle
OTHER
ADD
(Note)
#DQ7
DQ7
X
X
0
A0
F0
80
80
80
90
Addr. Data
5555
5555
5555
AIN
4th Cycle
V
V
A9
ID
ID
Toggle
Toggle
DQ6
DIN
AA
AA
AA
A1
V
V
IL
IL
2AAA
2AAA
2AAA
Addr. Data
5th Cycle
W49F002U
V
A0
V
IH
IL
55
55
55
Addr. Data
5555
SA
5555
6th Cycle
TO DQ0
DQ7
(3)
DAh
0Bh
10
30
40