参数资料
型号: AT83C5112
厂商: Atmel Corp.
英文描述: 8-bit Microcontroller with A/D Converter
中文描述: 8位微控制器与A / D转换器
文件页数: 50/97页
文件大小: 1229K
代理商: AT83C5112
50
AT8xC5112
4191B
8051
04/03
Registers
Table 36.
ADCON Register
ADCON (S:F3h)
ADC Control Register
Reset value = X000 0000b
Table 37.
ADCLK Register
ADCLK (S:F2h)
ADC Clock Prescaler
Reset value = 0000 0000b
7
6
5
4
3
2
1
0
QUIETM
PSIDLE
ADEN
ADEOC
ADSST
SCH2
SCH1
SCH0
Bit Number
Bit Mnemonic
Description
7
QUIETM
Pseudo Idle mode (best precision)
Set to put in quiet mode during conversion.
Cleared by hardware after completion of the conversion.
6
PSIDLE
Pseudo Idle mode (good precision)
Set to put in idle mode during conversion.
Cleared by hardware after completion of the conversion.
5
ADEN
Enable/Standby Mode
Set to enable ADC.
Clear for Standby mode (power dissipation 1 uW).
4
ADEOC
End Of Conversion
Set by hardware when ADC result is ready to be read. This flag can
generate an interrupt.
Must be cleared by software.
3
ADSST
Start and Status
Set to start an A/D conversion.
Cleared by hardware after completion of the conversion.
2 - 0
SCH2:0
Selection of channel to convert
see Table 35.
7
6
5
4
3
2
1
0
-
PRS 6
PRS 5
PRS 4
PRS 3
PRS 2
PRS 1
PRS 0
Bit Number
Bit Mnemonic
Description
7
Reserved
Leave this bit at 0.
6 - 0
PRS6:0
Clock Prescaler
f
CONV_CK
= f
CkADC
/(2 * PRS)
if PRS=0, f
CONV_CK
= f
CkADC
/256
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