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MAS6501BA1WA300 参数 Datasheet PDF下载

MAS6501BA1WA300图片预览
型号: MAS6501BA1WA300
PDF下载: 下载PDF文件 查看货源
内容描述: 16位模拟数字转换器 [16-Bit Analog-to-Digital Converter]
分类和应用: 转换器
文件页数/大小: 16 页 / 203 K
品牌: MAS [ MICRO ANALOG SYSTEMS ]
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DA6501.001  
27 October 2008  
I2C SERIAL INTERFACE CONTROL  
Serial Interface  
MAS6501 has two wire serial I2C bus type interface  
comprising of serial clock (SCL) and serial data  
(SDA) pins. I2C bus is used to write configuration  
data to sensor interface IC and read the  
measurement result when A/D conversion has been  
finished.  
been accomplished. MCLK signal can also be  
running all the time.  
XCLR is used to reset the A/D converter. Reset  
initializes internal registers and counters. After  
connecting supply voltage to MAS6501 and before  
starting operating the device via I2C bus it is  
required to reset the device with XCLR reset pin if  
supply voltage rise time has been longer than 400  
ns. If the supply voltage rise time is shorter than this  
the external reset with XCLR pin is unnecessary  
since the device is automatically reset by power on  
reset (POR) circuitry.  
Digital interface includes also master clock (MCLK),  
end of conversion (EOC) and master reset (XCLR)  
pins.  
MLCK signal is needed to be clocked during  
conversion period. It can be stopped after EOC  
goes high which indicates that A/D conversion has  
Device and Register Addresses  
I2C bus standard makes it possible to connect  
several I2C bus devices into same bus. The devices  
are distinguished from each other by unique device  
address codes. MAS6501 device address is shown  
in table 2. The LSB bit of the device address defines  
whether the bus is configured to Read (1) or Write  
(0) operation.  
Table 2. MAS6501 device address  
A7 A6 A5 A4 A3 A2 A1  
W/R  
1
1
1
0
1
1
1
0/1  
MAS6501 contains three 8-bit registers which are  
presented in table 3. Control register is used to  
configure the device to proper measurement setup.  
Control register bits are described in table 1 (page  
5). Two other 8-bit registers are used to store the  
16-bit A/D conversion result.  
Table 3. MAS6501 internal register addresses  
A7 A6 A5 A4 A3 A2 A1  
A0 Register Description  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
0
1
MSB A/D Conversion Result Register  
LSB A/D Conversion Result Register  
Control register  
6 (16)