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STMPE321QTR 데이터시트(PDF) 2 Page - STMicroelectronics

부품명 STMPE321QTR
상세설명  3-channel capacitive touchkey controller
PDF  40 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE321QTR 데이터시트(HTML) 2 Page - STMicroelectronics

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Contents
STMPE321
2/40
Doc ID 15791 Rev 3
Contents
1
STMPE321 functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
STMPE321 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2
Pin assignment and function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3
STMPE321 typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Capacitance compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
Calibration algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.1
Noise filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.2
Data filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2
Power management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3I2C interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4
Register map and function description . . . . . . . . . . . . . . . . . . . . . . . . . 12
5
System and identification registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6
Interrupt controller module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7
GPIO controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8
Capacitive touch module registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
10
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
10.1
Capacitive sensing characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
11
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
12
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39



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