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參數(shù)資料
| 型號(hào)： | MQ80C52XXX-36SHXXX |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CQFP44 |
| 封裝： | CERAMIC, QFP-44 |
| 文件頁(yè)數(shù)： | 42/132頁(yè) |
| 文件大?。?/td> | 10886K |
| 代理商： | MQ80C52XXX-36SHXXX |
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209
ATmega8535(L)
2502K–AVR–10/06
Figure 99. ADC Auto Trigger Logic
Using the ADC Interrupt Flag as a trigger source makes the ADC start a new conversion
as soon as the ongoing conversion has finished. The ADC then operates in Free Run-
ning mode, constantly sampling and updating the ADC Data Register. The first
conversion must be started by writing a logical one to the ADSC bit in ADCSRA. In this
mode the ADC will perform successive conversions independently of whether the ADC
Interrupt Flag, ADIF is cleared or not.
If Auto Triggering is enabled, single conversions can be started by writing ADSC in
ADCSRA to one. ADSC can also be used to determine if a conversion is in progress.
The ADSC bit will be read as one during a conversion, independently of how the conver-
sion was started.
Prescaling and
Conversion Timing
Figure 100. ADC Prescaler
By default, the successive approximation circuitry requires an input clock frequency
between 50 kHz and 200 kHz to get maximum resolution. If a lower resolution than
10 bits is needed, the input clock frequency to the ADC can be higher than 200 kHz to
get a higher sample rate.
ADSC
ADIF
SOURCE 1
SOURCE n
ADTS[2:0]
CONVERSION
LOGIC
PRESCALER
START
CLK
ADC
.
EDGE
DETECTOR
ADATE
7-BIT ADC PRESCALER
ADC CLOCK SOURCE
CK
ADPS0
ADPS1
ADPS2
CK/128
CK/2
CK/4
CK/8
CK/16
CK/32
CK/64
Reset
ADEN
START
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| MC80C32E-16SHXXX:D | 8-BIT, 16 MHz, MICROCONTROLLER, CDIP40 |
| MR80C52XXX-36SCD | 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CQCC44 |
| MD80C32-16SHXXX | 8-BIT, 16 MHz, MICROCONTROLLER, CDIP40 |
| MR80C32E-20/883:RD | 8-BIT, 20 MHz, MICROCONTROLLER, CQCC44 |
| MR80C52XXX-30SCR | 8-BIT, MROM, 30 MHz, MICROCONTROLLER, CQCC44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| MQ82370-20 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MQ8238020 | 制造商:Intel 功能描述:CONTROLLER: OTHER |
| MQ82380-20 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MQ82380-20/R | 制造商:Rochester Electronics LLC 功能描述: |
| MQ82592 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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