參數(shù)資料
型號(hào): MCV18ET-I/SO
元件分類: 微控制器/微處理器
英文描述: FLASH, 20 MHz, RISC MICROCONTROLLER, PDSO18
封裝: 7.50 MM, LEAD FREE, SOIC-18
文件頁數(shù): 49/108頁
文件大?。?/td> 1509K
代理商: MCV18ET-I/SO
2009 Microchip Technology Inc.
DS41399A-page 45
MCV18E
7.2.7
ADC REGISTER DEFINITIONS
The following registers are used to control the
operation of the ADC.
REGISTER 7-1:
ADCON0: A/D CONTROL REGISTER 0
R/W-0
U-0
R/W-0
ADCS1
ADCS0
CHS2
CHS1
CHS0
GO/DONE
ADON
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-6
ADCS<1:0>: A/D Conversion Clock Select bits
00
= FOSC/2
01
= FOSC/8
10
= FOSC/32
11
= FRC (Clock derived from the internal ADC RC oscillator)
bit 5-3
CHS<2:0>: Analog Channel Select bits
000
= AN0
001
= AN1
010
= AN2
011
= AN3
100
= Reserved, do not use
101
= Reserved, do not use
110
= Reserved, do not use
111
= Reserved, do not use
bit 2
GO/DONE: A/D Conversion Status bit
1
= A/D conversion cycle in progress. Setting this bit starts an A/D conversion cycle.
This bit is automatically cleared by hardware when the A/D conversion has completed.
0
= A/D conversion completed/not in progress
bit 1
Unimplemented: Read as ‘0’
bit 0
ADON: ADC Enable bit
1
= ADC is enabled
0
= ADC is disabled and consumes no operating current
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