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參數(shù)資料
| 型號： | CAP1028-1-BP-TR |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC20 |
| 封裝： | 4 X 4 MM, ROHS COMPLAINT, QFN-20 |
| 文件頁數(shù)： | 14/69頁 |
| 文件大?。?/td> | 948K |
| 代理商： | CAP1028-1-BP-TR |
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8 Channel Capacitive Touch Sensor with 2 LED Drivers
Datasheet
SMSC CAP1028
21
Revision 1.0 (06-16-09)
DATASHEET
3.5.2
Set Address Pointer
The Set Address Pointer command sets the Address pointer for subsequent reads and writes of data.
The pointer is set on the rising edge of the final data bit. At the same time, the data that is to be read
is fetched and loaded into the internal output buffer but is not transmitted.
3.5.3
Write Data
The Write Data protocol updates the contents of the register referenced by the address pointer. As the
command is processed, the data to be read is fetched and loaded into the internal output buffer but
not transmitted. Then, the register is updated with the data to be written. Finally, the address pointer
is incremented.
Figure 3.2 SPI Reset Interface Command - Normal Mode
Figure 3.3 SPI Set Address Pointer Command - Normal Mode
Master SPDOUT
SPI_MOSI
SPI_CS#
SPI_CLK
Reset - 7Ah
Invalid register data
00h – Internal Data buffer empty
SPI_MISO
Master Drives
Slave Drives
‘0’
‘1’
‘0’
‘1’
‘0’
‘1’
‘0’
‘1’
‘0’
Master SPDOUT
SPI_MOSI
Register Address
SPI_CS#
SPI_CLK
Set Address Pointer – 7Dh
Unknown, Invalid Data
SPI_MISO
Master Drives
Slave Drives
Address pointer set
‘0’
‘1’
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