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參數(shù)資料
| 型號： | R83C154DTXXX-25D |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQCC44 |
| 封裝： | LCC-44 |
| 文件頁數(shù)： | 46/108頁 |
| 文件大小： | 3682K |
| 代理商： | R83C154DTXXX-25D |
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42
8069R–AVR–06/2013
XMEGA A4
Not recommended for new designs -
Use XMEGA A4U series
Figure 25-1.
ADC overview
Each ADC has four MUX selection registers with a corresponding result register. This means
that four channels can be sampled within 1.5 s without any intervention by the application other
than starting the conversion. The results will be available in the result registers.
The ADC may be configured for 8- or 12-bit resolution, reducing the minimum conversion time
(propagation delay) from 3.5 s for 12-bit to 2.5 s for 8-bit resolution.
ADC conversion results are provided left- or right adjusted with optional ‘1’ or ‘0’ padding. This
eases calculation when the result is represented as a signed integer (signed 16-bit number).
PORTA has one ADC. Notation of this peripheral is ADCA.
ADC
Channel A
Register
Channel B
Register
Channel C
Register
Channel D
Register
Pin
in
puts
Pin
i
npu
ts
1-64 X
Internal
i
npu
ts
Channel A MUX selection
Channel B MUX selection
Channel C MUX selection
Channel D MUX selection
Event
Trigger
Configuration
Reference selection
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