參數(shù)資料
型號： MB90F372PMT-G
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP144
封裝： 0.40 MM PITCH, PLASTIC, LQFP-144
文件頁數(shù)： 127/153頁
文件大?。?/td> 2503K
代理商： MB90F372PMT-G
MB90370 Series
75
14. A/D converter
The A/D (Analog to Digital) converter converts the analog voltage input to an analog input pin (input voltage) to
a digital value.
The converter has the following features :
The minimum conversion time is 6.13 s (for a machine clock of 16 MHz; includes the sampling time).
The minimum sampling time is 3.75 s (for a machine clock of 16 MHz).
The converter uses the RC-type successive approximation conversion method with a sample and hold circuit.
A resolution of 10 bits or 8 bits can be selected.
Up to twelve channels for analog input pins can be selected by a program.
Various conversion mode :
- Single conversion mode : Selectively convert one channel.
- Scan conversion mode : Continuously convert multiple channels. Maximum of 12 selectable channels.
- Continuous conversion mode : Repeatedly convert specified channels.
- Stop conversion mode : Convert one channel then halt until the next activation. (Enables synchronization of
the conversion start timing.)
At the end of A/D conversion, an interrupt request can be generated and EIOS can be activated.
In the interrupt-enabled state, the conversion data protection function prevents any part of the data from being
lost through continuous conversion.
The conversion can be activated by software, 16-bit reload timer 4 (rise edge) and ADTG.
(1) Register configuration of A/D converter
(Continued)
15
14
13
12
11
10
9
8
Address: 00002BH
R/W
1
R/W
1
R/W
1
R/W
1
ADE11 ADE10 ADE9 ADE8
Analog Input Enable Register 2
ADER2
Initial value
Read/write
Bit number
15
14
13
12
11
10
9
8
R/W
0
Address: 000031H
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
W
0
PAUS
STS1
STS0
STRT
RESV
A/D Control Status Register 1
Initial value
Read/write
Bit number
ADCS1
BUSY
INT
INTE
76
5
4
3
2
1
0
R/W
1
Address: 00002AH
R/W
1
R/W
1
R/W
1
R/W
1
R/W
1
R/W
1
R/W
1
ADE7
ADE6
ADE5
ADE4
ADE3
ADE2
ADE1
ADE0
Analog Input Enable Register 1
ADER1
Initial value
Read/write
Bit number
Address: 000030H
76
5
4
3
2
1
0
A./D Control Status Register 0
ADCS0
Bit number
R/W
0
Initial value
Read/write
MD0
MD1
R/W
0
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