参数资料
型号: MB90822PFV
厂商: FUJITSU LTD
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP80
封装: 0.50 MM PITCH, PLASTIC, LQFP-80
文件页数: 65/100页
文件大小: 1414K
代理商: MB90822PFV
MB90820 Series
67
12. A/D Converter
The A/D converter converts the analog voltage input (input voltage) to an analog input pin to a digital value. It
has the following features :
The minimum conversion time is 3 s (for a machine clock of 24 MHz; including sampling time).
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 set.
Up to 16 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 16 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 1 (rising edge) and 16-bit free-running timer
zero detection edge.
(1) Register configuration
(Continued)
15
14
13
12
11
10
9
8
R/W
0
Address: 00000C7H
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
W
0
A/D Control Status Register 1 (upper)
ADCS1
Initial value
Read/write
Bit
Address: 0000C6H
76
5
4
3
2
1
0
A/D Control Status Register 0 (lower)
ADCS0
Bit
R/W
0
R/W
0
R/W
00
Initial value
Read/write
MD1
MD0
S10
BUSY
INT
INTE
PAUS
STS1
STS0
STRT
Reserved
15
14
13
12
11
10
9
8
Address: 00000C9H
R
X
R
X
A/D Data Register 1 (upper)
ADCR1
Initial value
Read/write
Bit
Address: 0000C8H
76
5
4
3
2
1
0
A/D Data Register 0 (lower)
ADCR0
Bit
R
X
R
X
R
X
R
X
R
X
R
X
R
X
R
X
Initial value
Read/write
D7
D6
D3
D2
D1
D0
D5
D9
D8
D4
X
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