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參數(shù)資料
| 型號： | W29C020CT70B |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | PROM |
| 英文描述： | 256K X 8 CMOS FLASH MEMORY |
| 中文描述： | 256K X 8 FLASH 5V PROM, 70 ns, PDSO32 |
| 封裝： | TSOP1-32 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大?。?/td> | 194K |
| 代理商： | W29C020CT70B |
W29C020C
Publication Release Date: April 2000
- 5 -
Revision A2
Toggle Bit (DQ6)- Write Status Detection
In addition to data polling, the W29C020C provides another method for determining the end of a write
cycle. During the internal write cycle, any consecutive attempts to read DQ6 will produce alternating
0's and 1's. When the write cycle is completed, this toggling between 0's and 1's will stop. The device
is then ready for the next operation. See Toggle Bit Timing Diagram.
Product Identification
The product ID operation outputs the manufacturer code and device code. The programming
equipment automatically matches the device with its proper erase and programming algorithms.
The manufacturer and device codes can be accessed through software or by hardware operation. In
the software access mode, a six-byte command sequence can be used to access the product ID. A
read from address "00000 hex" outputs the manufacturer code "DA hex." A read from address "00001
hex" outputs the device code "45 hex." The product ID operation can be terminated by a three-byte
command sequence.
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
Operating Range: 0 to 70
°
C (Ambient Temperature), V
DD
= 5V
±
10%, V
SS
= 0V, V
HH
= 12V
MODE
PINS
CE
V
IL
OE
WE
V
IL
ADDRESS
DQ.
Read
V
IH
A
IN
Dout
Write
V
IL
V
IH
V
IL
A
IN
Din
Standby
V
IH
X
X
X
High Z
Write Inhibit
X
V
IL
X
X
High Z/D
OUT
X
X
V
IH
X
High Z/D
OUT
Output Disable
X
V
IH
X
X
High Z
5-Volt Software Chip
Erase
V
IL
V
IH
V
IL
A
IN
D
IN
Product ID
V
IL
V
IL
V
IH
A0 = V
IL
; A1
A17 = V
IL
;
A9 = V
HH
Manufacturer Code DA
(Hex)
V
IL
V
IL
V
IH
A0 = V
IH
; A1
A17 = V
IL
;
A9 = V
HH
Device Code
45 (Hex)
相關PDF資料 |
PDF描述 |
|---|---|
| W29C020CT90B | 256K X 8 CMOS FLASH MEMORY |
| W29C020 | 256K×8bit CMOS Flash Memory(256K×8位CMOS閃速存儲器) |
| W29C020-90 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVS06; Number of Contacts:10; Connector Shell Size:13; Connecting Termination:Crimp; Circular Shell Style:Straight Plug; Body Style:Straight |
| W29C020-70B | 256K X 8 CMOS FLASH MEMORY |
| W29C020-90A | 256K X 8 CMOS FLASH MEMORY |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| W29C020CT90B | 制造商:Winbond Electronics Corp 功能描述:256K X 8 FLASH 5V PROM, 90 ns, PDSO32 |
| W29C020CT90N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM|FLASH|256KX8|CMOS|TSSOP|32PIN|PLASTIC |
| W29C020P-12 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W29C020P-12A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
| W29C020P-12B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:256K X 8 CMOS FLASH MEMORY |
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