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STMPE811 Datasheet(PDF) 31 Page - STMicroelectronics

Part # STMPE811
Description  8-bit port expander with advanced touchscreen controller
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE811 Datasheet(HTML) 31 Page - STMicroelectronics

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STMPE811
Touchscreen controller
31/54
Oversampling and averaging function
The STMPE811 touchscreen controller can be configured to oversample by 2/4/8 times and
provide the averaged value as final output. This feature helps to reduce the effect of
surrounding noise.
Table 14.
Touchscreen controller register summary table
Address
Register name
Bit
Type
Function
0x40
TSC_CTRL
8
R/W
4-wire touchscreen controller setup
0x41
TSC_CFG
8
R/W
TSC configuration register
0x42
WDW_TR_X
16
R/W
Window setup for top right X
0x44
WDW_TR_Y
16
R/W
Window setup for top right Y
0x46
WDW_TR_X
16
R/W
Window setup for bottom left X
0x48
WDW_TR_Y
16
R/W
Window setup for bottom left Y
0x4A
FIFO_TH
8
R/W
FIFO level to generate interrupt
0x4B
FIFO_CTRL_STA
8
R/W
Current status of FIFO
0x4C
FIFO_SIZE
8
R
Current filled level of FIFO
0x4D
TSC_DATA_X
16
R
Data port for TSC data access
0x4F
TSC_DATA_Y
16
R
Data port for TSC data access
0x51
TSC_DATA_Z
8
R
Data port for TSC data access
0x52
TSC_DATA_XYZ
32
R
Data port for TSC data access
0x56
TSC_FRACT_Z
8
TSC_FRACT_Z
0x57
TSC_DATA
8
R
TSC data access port
0x58
TSC_I_DRIVE
8
R/W
TSC_I_DRIVE
0x59
TSC_SHIELD
8
R/W
TSC_SHIELD


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