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參數(shù)資料
| 型號： | WE512K16-140G4QA |
| 廠商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分類： | PROM |
| 英文描述： | 512K X 16 EEPROM 5V MODULE, 140 ns, CQFP68 |
| 封裝： | 40 MM, HERMETIC SEALED, CERAMIC, QFP-68 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 373K |
| 代理商： | WE512K16-140G4QA |
6
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
WE512K16-XG4X
April 1999
Rev. 2
White Electronic Designs Corp. reserves the right to change products or specications without notice.
DATA POLLING
The module offers a data polling feature which allows a
faster method of writing to the device. Figure 6 shows the
timing diagram for this function. During a word or page
write cycle, an attempted read of the last word written will
result in the complement of the written data on I/O7 and
I/O15. Once the write cycle has been completed, true data
is valid on all outputs and the next cycle may begin. Data
polling may begin at any time during the write cycle.
FIGURE 6 – DATA POLLING WAVEFORM
DATA POLLING CHARACTERISTICS
VCC = 5.0V, VSS = 0V, -55°C ≤ TA ≤ +125°C
Parameter
Symbol
Min
Max
Unit
Data Hold Time
tDH
10
ns
OE# Hold Time
tOEH
10
ns
OE# To Output Valid
tOE
55
ns
Write Recovery Time
tWR
0ns
OE#
ADDRESS
CS1-4#
WE1-4#
I/O7
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