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AN2423 STMPE2401 - Port expander keypad controller

PDFST STMPE2401 is the first in the family of STMicroelectronic’s expander logic products. The principle of a basic expander logic is the provision of additional I/Os that can be used by the host processor to implement additional features such as expanding the number of control signals and mixed signal lines or controlling numerous peripherals.

ST Microelectronics
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