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SN8F2280 参数 Datasheet PDF下载

SN8F2280图片预览
型号: SN8F2280
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器 [8-Bit Micro-Controller]
分类和应用: 微控制器
文件页数/大小: 163 页 / 3660 K
品牌: SONIX [ SONIX TECHNOLOGY COMPANY ]
 浏览型号SN8F2280的Datasheet PDF文件第126页浏览型号SN8F2280的Datasheet PDF文件第127页浏览型号SN8F2280的Datasheet PDF文件第128页浏览型号SN8F2280的Datasheet PDF文件第129页浏览型号SN8F2280的Datasheet PDF文件第131页浏览型号SN8F2280的Datasheet PDF文件第132页浏览型号SN8F2280的Datasheet PDF文件第133页浏览型号SN8F2280的Datasheet PDF文件第134页  
SN8F2280 Series  
USB 2.0 Full-Speed 8-Bit Micro-Controller  
Bit 4  
ADLEN: ADC’s resolution select bits.  
0 = 8-bit.  
1 = 12-bit.  
Bit [3:0] ADB [3:0]: 12-bit low-nibble ADC data buffer.  
12.4 ADB REGISTERS  
0B7H  
ADB  
Bit 7  
ADB11  
Bit 6  
ADB10  
Bit 5  
ADB9  
Bit 4  
ADB8  
Bit 3  
ADB7  
Bit 2  
ADB6  
Bit 1  
ADB5  
Bit 0  
ADB4  
Read/Write  
After reset  
R
-
R
-
R
-
R
-
R
-
R
-
R
-
R
-
Bit[7:0]  
ADB[7:0]: 8-bit ADC data buffer and the high-byte data buffer of 12-bit ADC.  
ADB is ADC data buffer to store ADC converter result. The ADB register is only 8-bit register including bit 4~bit11 ADC  
data. To combine ADB register and the low-nibble of ADR will get full 12-bit ADC data buffer. The ADC buffer is a  
read-only register and the initial status is unknown after system reset.  
¾
¾
ADB[11:4]: In 8-bit ADC mode, the ADC data is stored in ADB register.  
ADB[11:0]: In 12-bit ADC mode, the ADC data is stored in ADB and ADR registers.  
’
Note: The initial status of ADC data buffer including ADB register and ADR low-nibble after the system  
reset is unknown.  
The AIN’s input voltage v.s. ADB’s output data  
AIN n  
ADB11 ADB10 ADB9 ADB8 ADB7 ADB6 ADB5 ADB4 ADB3 ADB2 ADB1 ADB0  
0/4096*VREFH  
1/4096*VREFH  
0
0
.
0
0
.
0
0
.
0
0
.
0
0
.
0
0
.
0
0
.
0
0
.
0
0
.
0
0
.
0
0
.
0
1
.
.
.
.
.
.
.
.
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4094/4096*VREFH  
4095/4096*VREFH  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
For different applications, users maybe need more than 8-bit resolution but less than 12-bit. To process the ADB and  
ADR data can make the job well. First, the AD resolution must be set 12-bit mode and then to execute ADC converter  
routine. Then delete the LSB of ADC data and get the new resolution result. The table is as following.  
ADC  
Resolution  
8-bit  
ADB  
ADB8  
ADR  
ADB11  
ADB10 ADB9  
ADB7  
ADB6  
ADB5  
ADB4  
ADB3  
ADB2  
ADB1  
ADB0  
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
x
x
x
O
O
O
x
x
x
O
O
x
x
x
x
O
9-bit  
10-bit  
11-bit  
12-bit  
O
O
O
O
O = Selected, x = Delete  
SONiX TECHNOLOGY CO., LTD  
Page 130  
Version 1.1  
 
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