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參數(shù)資料
| 型號(hào)： | MC68HC05P18MDW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁(yè)數(shù)： | 126/144頁(yè) |
| 文件大?。?/td> | 1348K |
| 代理商： | MC68HC05P18MDW |
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Advance Information
MC68HC(8)05P18 — Rev. 2.0
82
Analog-to-Digital (A/D) Converter
MOTOROLA
Analog-to-Digital (A/D) Converter
9.4.3 Multi-Channel Operation
An input multiplexer allows the A/D converter to select from one of four
external analog signals. Port C pins PC3–PC6 are shared with the inputs
to the multiplexer.
9.5 A/D Status and Control Register
The ADSC register reports the completion of A/D conversion and
provides control over oscillator selection, analog subsystem power, and
input channel selection. See Figure 9-1.
CC — Conversion Complete Bit
This read-only status bit is set when a conversion sequence has
completed and data is ready to be read from the ADC register. CC is
cleared when a channel is selected for conversion, when data is read
from the ADC register, or when the A/D subsystem is turned off. Once
a conversion has been started, conversions of the selected channel
will continue every 32 PH2 clock cycles until the ADSC register is
written to again. During continuous conversion operation, the ADC
register will be updated with new data and the CC bit set every 32
PH2 clock cycles. Also, data from the previous conversion will be
overwritten regardless of the state of the CC bit.
Reserved
This bit is not used currently. It can be read or written, but does not
control anything.
Address:
$001E
Bit 7
654321
Bit 0
Read:
CC
R
ADON
00
CH2
CH1
CH0
Write:
Reset:
00000000
= Unimplemented
R
= Reserved
Figure 9-1. A/D Status and Control Register (ADSC)
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| MC68HC05P2CFN | 8-BIT, MROM, MICROCONTROLLER, PQCC32 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| MC68HC05P1A | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification |
| MC68HC05P1ADW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification |
| MC68HC05P1AP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification |
| MC68HC05P1CDW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P1CP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
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