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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Software Product Identification and Boot Block Lockout Detection Acquisition
Flow
Product
Identification
Entry (1)
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data 90
to
address 5555
Pause 10 S
Notes for software product identification/boot block lockout detection:
(1) Data Format: DQ15
DQ8 (Don't Care), DQ7
(2) A1
A16 = V
; manufacture code is read for A0 = V
IL
(3) The device does not remain in identification and boot block lockout detection mode if power down.
(4) If the output data in DQ0 = 1, the boot block programming lockout feature is activated; if the output data in DQ0 = 0, the lockout feature is
inactivated and the block can be programmed.
(5) The device returns to standard operation mode.
(6) Optional 1-write cycle (write F0 hex at XXXX address) can be used to exit the product identification/boot block lockout detection.
Product
Identification
and Boot Block
Lockout Detection
Mode (3)
(2)
Read address = 0000
data = 00DA
(2)
Read address = 0001
data = 00AE
(4)
Read address = 0002
data in DQ0 =1/0
DQ0 (Hex); Address Format: A14
A0 (Hex)
; device code is read for A0 = V
IL
IH
- 12 -
W49F002U
Product
Identification Exit(6)
Load data AA
to
address 5555
Load data 55
to
address 2AAA
Load data F0
to
address 5555
Pause 10 S
(5)
Normal Mode
.