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STMPE821QTR датащи(PDF) 25 Page - STMicroelectronics

номер детали STMPE821QTR
подробное описание детали  8-bit Xpander Logic??with touchkey controller
PDF  55 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
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STMPE821QTR датащи(HTML) 25 Page - STMicroelectronics

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STMPE821
Capacitive touch module registers
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9
Capacitive touch module registers
TOUCH_FIFO
Touch FIFO
Address:
0x19, 0x18
Type:
R
Reset:
0x00
Description:
TOUCH_FIFO is the access port for the internal 4-level FIFO used for buffering the
touch events. While it is possible to access each bytes in the data structure directly, it
is recommended that the FIFO is accessed only via the 0x18 address.
The FIFO must be accessed in multiples of 2 bytes (LSB, MSB). For STMPE821,
MSB is reserved and LSB contains a snapshot of the recent touch event. The FIFO
must be accessed in multiples of 2 bytes (LSB, MSB). For STMPE821, MSB is
reserved and LSB contains a snapshot of the recent touch event.
Where Tn is touch status of touch sensing channel n.
Table 10.
TOUCH_FIFO summary table
Address
Function
0x18
FIFO-0, LSB
0x19
FIFO-0, MSB
0x1A
FIFO-1, LSB
0x1B
FIFO-1, MSB
0x1C
FIFO-2, LSB
0x1D
FIFO-2, MSB
0x1E
FIFO-3, LSB
0x1F
FIFO-3, MSB
7654
3
2
1
0
T7
T6
T5
T4
T3
T2
T1
T0



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