STMPE321 ST Microelectronics, STMPE321 Datasheet - Page 23

• Manufacturer Part Number: STMPE321
• Description: 3-channel capacitive touch key controller
• Manufacturer: ST Microelectronics

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