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CAP1128-1-BP-TR 参数 Datasheet PDF下载

CAP1128-1-BP-TR图片预览
型号: CAP1128-1-BP-TR
PDF下载: 下载PDF文件 查看货源
内容描述: [LED Driver]
分类和应用: 驱动接口集成电路
文件页数/大小: 88 页 / 585 K
品牌: SMSC [ SMSC CORPORATION ]
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8 Channel Capacitive Touch Sensor with 2 LED Drivers  
Datasheet  
SPI_CS#  
SPI_CLK  
Master SPDOUT  
Data to Write  
Write Command – 7Eh  
SPI_MOSI  
SPI_MISO  
Unknown, Invalid Data  
Old Data at Current Address Pointer  
Master Drives  
Slave Drives  
1. Data written at current  
address pointer  
2. Address pointer incremented  
Figure 3.6 SPI Write Command - Normal Mode  
3.6.4  
Read Data  
The Read Data protocol is used to read data from the device. During the normal mode of operation,  
while the device is receiving data, the CAP1128 is simultaneously transmitting data to the host. For  
the Set Address commands and the Write Data commands, this data may be invalid and it is  
recommended that the Read Data command is used.  
SPI_CS#  
SPI_CLK  
Master SPDOUT  
SPI_MOSI  
‘0’  
‘1’  
‘1’  
‘1’  
‘1’  
‘1’  
‘1’  
‘1’  
‘0’  
‘1’  
‘1’  
‘1’  
‘1’  
‘1’  
‘1’  
‘1’  
Subsequent Read  
Commands – 7F  
First Read Command – 7Fh  
SPI_MISO  
Invalid, Unknown Data *  
Data at Current Address Pointer  
Address Pointer  
Incremented **  
Master Drives  
Slave Drives  
* The first read command after any other command will return invalid data for the first  
byte. Subsequent read commands will return the data at the Current Address Pointer  
** The Address Pointer is incremented 8 clocks after the Read Command has been  
received. Therefore continually sending Read Commands will result in each command  
reporting new data. Once Read Commands have been finished, the last data byte will be  
read during the next 8 clocks for any command  
Figure 3.7 SPI Read Command - Normal Mode  
Revision 1.32 (01-05-12)  
SMSC CAP1128  
DATA2S6HEET