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STMPE321 Folha de dados(PDF) 23 Page - STMicroelectronics

Nome de Peças STMPE321
Descrição Electrónicos  3-channel capacitive touchkey controller
PDF  40 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE321 Folha de dados(HTML) 23 Page - STMicroelectronics

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STMPE321
GPIO controller
Doc ID 15791 Rev 3
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The function of each bit is shown inTable 9:
Table 9.
GPIO control bits function
Register name
Function
GPIO monitor pin state
Reading this bit yields the current state of the bit. Writing has no
effect.
GPIO set pin state
Writing '1' to this bit causes the corresponding GPIO to go to '1' state
Writing '0' to this bit causes the corresponding GPIO to go to '0' state
GPIO set pin direction
'0' sets the corresponding GPIO to input state, and '1' sets it to output
state. All bits are '0' on reset.
GPIO function
'1' sets the corresponding GPIO to function as GPIO, and '0' sets it to
touchkey mode.



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