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參數(shù)資料
| 型號(hào)： | W49F002 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | 256K X 8 CMOS FLASH MEMORY |
| 中文描述： | 256K × 8的CMOS閃存 |
| 文件頁(yè)數(shù)： | 5/23頁(yè) |
| 文件大小： | 303K |
| 代理商： | W49F002 |
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W49F002U
Publication Release Date: April 2000
- 5 -
Revision A2
Toggle Bit (DQ
6
)- Write Status Detection
In addition to data polling, the W49F002U provides another method for determining the end of a
program cycle. During the internal program or erase cycle, any consecutive attempts to read DQ
6
will
produce alternating 0's and 1's. When the program or erase cycle is completed, this toggling between
0's and 1's will stop. The device is then ready for the next operation.
Product Identification
The product ID operation outputs the manufacturer code and device code. Programming equipment
automatically matches the device with its proper erase and programming algorithms.
The manufacturer and device codes can be accessed by software or hardware operation. In the
software access mode, a three-byte (or JEDEC 3-byte) command sequence can be used to access
the product ID. A read from address 0000H outputs the manufacturer code DA(hex). A read from
address 0001H outputs the device code 0B(hex). The product ID operation can be terminated by a
three-byte command code sequence or an alternate one-byte command code sequence (see
Command Definition table).
In the hardware access mode, access to the product ID is activated by forcing
CE
and
OE
low,
WE
high, and raising A9 to 12 volts.
TABLE OF OPERATING MODES
Operating Mode Selection
(V
HH
= 12V
±
5
%
)
MODE
PINS
RESET
CE
V
IH
OE
V
IL
WE
V
IH
ADDRESS
DQ.
Read
V
IL
A
IN
Dout
Write
V
IH
V
IL
V
IH
V
IL
A
IN
Din
Standby
V
IH
V
IH
X
X
X
High Z
Write Inhibit
V
IH
X
V
IL
X
X
High Z/DOUT
V
IH
X
X
V
IH
X
High Z/DOUT
Output Disable
V
IH
X
V
IH
X
X
High Z
Reset Mode
V
IL
X
X
X
X
High Z
Product ID
V
IH
V
IL
V
IL
V
IH
A0 = V
IL
; A1
A17 = V
IL
;
A9 = V
HH
Manufacturer Code DA (Hex)
V
IH
V
IL
V
IL
V
IH
A0 = V
IH
; A1
A17 = V
IL
;
A9 = V
HH
Device Code 0B (Hex)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W49F002U-12B | MB 32C 32#20 SKT RECP |
| W49F002U-70B | 256K X 8 CMOS FLASH MEMORY |
| W49F002U-90B | 256K X 8 CMOS FLASH MEMORY |
| W49F002UT12B | 256K X 8 CMOS FLASH MEMORY |
| W49F002UT70B | Reed Relay; Contacts:SPST; Contact Carry Current:2A; Coil Voltage DC Max:12V; Relay Terminals:PCB; Switching Current Max:0.5A; Switching Voltage Max:200V; Contact Carrying Power:10W; Leaded Process Compatible:Yes; Mounting Type:PCB RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W49F002U | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W49F002U-12B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W49F002U-70B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W49F002U-90B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W49F002UP12B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
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