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參數資料
| 型號： | ADC1205CCJ-1 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | 12-Bit Plus Sign mP Compatible A/D Converters |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP24 |
| 封裝： | CERAMIC, DIP-24 |
| 文件頁數： | 12/18頁 |
| 文件大?。?/td> | 327K |
| 代理商： | ADC1205CCJ-1 |
Functional Description
(Continued)
TL/H/5676–28
TL/H/5676–29
FIGURE 13
When using this method of conversion only one strobe is
necessary and the rising edge of WR/RD can be used to
read the current conversion results. These methods reduce
the throughput time of the conversion since the RD and WR
cycles are combined.
2. With the standard timing WR pulse width longer than the
conversion time a conversion is completed but the INTR will
never go low to signal the end of a conversion. The output
latches will be updated and valid information will be avail-
able when the RD cycle is accomplished.
3. Tying CS and RD low continuously and strobing WR to
initiate a conversion will also yield valid data. The INTR will
never go low to signal the end of a conversion and the
digital outputs will always be enabled, so using INTR to
strobe the WR line for a continuous conversion cannot be
done with this part.
A simple stand-alone circuit can be accomplished by driving
WR with the inverse of the READY OUT signal using a sim-
ple inverter as shown below.
TL/H/5676–30
FIGURE 14
12
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