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參數(shù)資料
| 型號(hào)： | CAP1028-1-BP-TR |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC20 |
| 封裝： | 4 X 4 MM, ROHS COMPLAINT, QFN-20 |
| 文件頁(yè)數(shù)： | 38/69頁(yè) |
| 文件大小： | 948K |
| 代理商： | CAP1028-1-BP-TR |
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8 Channel Capacitive Touch Sensor with 2 LED Drivers
Datasheet
SMSC CAP1028
43
Revision 1.0 (06-16-09)
DATASHEET
5.11
Calibration Activate Registers
The Calibration Activate register force the respective sensors to be re-calibrated. When a bit is set,
the corresponding Capacitive Touch Sensor will be re-calibrated and the bit will be automatically
cleared once the re-calibration routine has finished. During the re-calibration routine, the sensors will
not detect a press for up to 600ms and the Sensor Base Count register values will be invalid. During
this time, any press on the corresponding sensors will invalidate the re-calibration.
Bit 7 - CS8_CAL - When set, the CS8 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 6 - CS7_CAL - When set, the CS7 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 5 - CS6_CAL - When set, the CS6 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 4 - CS5_CAL - When set, the CS5 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 3 - CS4_CAL - When set, the CS4 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 2 - CS3_CAL - When set, the CS3 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 1 - CS2_CAL - When set, the CS2 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
Bit 0 - CS1_CAL - When set, the CS1 input is re-calibrated. This bit is automatically cleared once the
sensor has been re-calibrated successfully.
5.12
Interrupt Enable Register
The Interrupt Enable registers determine whether a sensor touch or release causes the interrupt pin
to be asserted.
Bit 7 - CS8_INT_EN - Enables the interrupt pin to be asserted if a touch is detected on CS8
(associated with the CS8 status bit).
‘0’ - The interrupt pin will not be asserted if a touch is detected on CS8 (associated with the CS8
status bit).
‘1’ (default) - The interrupt pin will be asserted a touch is detected on CS8 (associated with the
CS8 status bit).
Table 5.18 Calibration Activate Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
26h
R/W
Calibration
Activate
CS8_CAL
CS7_CAL
CS6_CAL
CS5_CAL
CS4_CAL
CS3_CAL
CS2_CAL
CS1_CAL
FFh
Table 5.19 Interrupt Enable Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
27h
R/W
Interrupt
Enable
CS8_
INT_EN
CS7_
INT_EN
CS6_
INT_EN
CS5_
INT_EN
CS4_
INT_EN
CS3_
INT_EN
CS2_
INT_EN
CS1_
INT_EN
FFh
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