參數(shù)資料
型號: MC68HC705G1B
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP56
封裝: SDIP-56
文件頁數(shù): 106/124頁
文件大小: 732K
代理商: MC68HC705G1B
MOTOROLA
9-2
MC68HC05G1
ANALOG TO DIGITAL CONVERTER
9
9.3
A/D Status and Control Register
A write to the A/D Status and Control register will cause the converter to abort the current
conversion; reset the COCO ag and start a new conversion on the selected channel.
COCO - Conversion Complete
1 (set)
Conversion is complete; a new result can be read from the A/D Data
register at address $28. The converter immediately starts a new
conversion. This bit is cleared by reading the A/D Data register,
writing to the A/D Status and Control register, power-on reset, or by
an external reset.
0 (clear) –
No conversion since last reset.
ADRC - A/D RC Oscillator Control
1 (set)
A/D uses RC clock.
0 (clear) –
A/D uses CPU clock
Table 9-1 A/D Channel Assignment
CH3
CH2
CH1
CH0
Channel Assignment
0
AN0 (port G bit 0)
0
1
AN1 (port G bit 1)
0
1
0
AN2 (port G bit 2)
0
1
AN3 (port G bit 3)
0100
VRL pin (low)
0101
VRL pin (low)
0110
VRL pin (low)
0111
VRL pin (low)
1000
VRH pin (high)
1001
(VRH-VRL)÷2
1010
VRL pin (low)
1011
VRL pin (low)
1100
VRL pin (low)
1101
VRL pin (low)
1110
VRL pin (low)
1111
VRL pin (low)
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$29
COCO
ADRC
ADON
CH3
CH2
CH1
CH0
000- 0000
TPG
78
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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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