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參數(shù)資料
| 型號： | AD7492AR |
| 英文描述： | 500kHz High Efficiency 6A Switching Regulator; Package: DD PAK; No of Pins: 7; Temperature Range: 0°C to +70°C |
| 中文描述： | 的A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 15/16頁 |
| 文件大小： | 194K |
| 代理商： | AD7492AR |
REV. 0
AD7492
–15–
AD7492 to 80C186 Interface
Figure 23 shows the AD7492 interfaced to the 80C186 micropro-
cessor. The 80C186 DMA controller provides two independent
high-speed DMA channels where data transfer can occur between
memory and I/O spaces. (The AD7492 occupies one of these I/O
spaces.) Each data transfer consumes two bus cycles, one cycle
to fetch data and the other to store data.
After the AD7492 has finished conversion, the BUSY line gen-
erates a DMA request to Channel 1 (DRQ1). As a result of the
interrupt, the processor performs a DMA READ operation
which also resets the interrupt latch. Sufficient priority must
be assigned to the DMA channel to ensure that the DMA
request will be serviced before the completion of the next con-
version. This configuration can be used with 6 MHz and 8 MHz
80C186 processors.
80C186
*
AD0
–
AD15
A16
–
A19
RD
DRQ1
ADDRESS/DATA BUS
DATA BUS
*
ADDITIONAL PINS OMITTED FOR CLARITY
ADDRESS
LATCH
ADDRESS
BUS
ADDRESS
DECODER
ALE
R
S
Q
AD7492
CONVST
RD
BUSY
DB0
–
DB9
(DB11)
OPTIONAL
CS
Figure 23. Interfacing to 80C186
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7492AR-5 | A/D CONVERTER |
| AD7492ARU | 500kHz High Efficiency 6A Switching Regulator; Package: DD PAK; No of Pins: 7; Temperature Range: -40°C to +85°C |
| AD7492ARU-5 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| AD7492BR | 500kHz High Efficiency 3A Switching Regulator; Package: TO-220; No of Pins: 7; Temperature Range: 0°C to +70°C |
| AD7492BR-5 | 500kHz High Efficiency 3A Switching Regulator; Package: TO-220; No of Pins: 7; Temperature Range: 0°C to +70°C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7492AR-5 | 制造商:Analog Devices 功能描述:ADC Single SAR 1.25Msps 12-bit Parallel 24-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:1.5MSPS 12-BIT ADC, INTERNAL REF + CLOCK - Bulk 制造商:Analog Devices 功能描述:12BIT ADC 1MSPS SMD 7492 SOIC24 |
| AD7492AR-5-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 1.25Msps 12-bit Parallel 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 1.25MSPS 12-BIT PARALLEL 24SOIC W - Tape and Reel |
| AD7492AR-5-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 1.25Msps 12-bit Parallel 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 1.25MSPS 12-BIT PARALLEL 24SOIC W - Tape and Reel |
| AD7492AR-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 12-bit Parallel 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 1MSPS 12-BIT PARALLEL 24SOIC W - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:1.5MSPS 12-BIT ADC,INTERNAL REF + CLOCK - Tape and Reel |
| AD7492AR-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 12-bit Parallel 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 1MSPS 12-BIT PARALLEL 24SOIC W - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:1.5MSPS 12-BIT ADC, INTERNAL REF + CLOCK - Tape and Reel |
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