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STMPE321 Datasheet(PDF) 3 Page - STMicroelectronics

Part # STMPE321
Description  3-channel capacitive touchkey controller
PDF  40 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE321 Datasheet(HTML) 3 Page - STMicroelectronics

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STMPE321
STMPE321 functional overview
Doc ID 15791 Rev 3
3/40
1
STMPE321 functional overview
The STMPE321 consists of the following blocks:
●
GPIO controller
●
Impedance sensor
●
Touchkey controller
●
I2C interface
1.1
STMPE321 block diagram
Figure 1.
Functional block diagram
Impedance
sensor
IO
controller
Touch 0-2
GPIO 0-2
GND
VCC
Touchkey
controller
ARef
Host
interface
SCLK
SDA
INT
RST



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