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STMPE1801BJR Fiches technique(PDF) 46 Page - STMicroelectronics

No de pièce STMPE1801BJR
Description  Xpander Logic™ 18-bit enhanced port expander with keypad controller
PDF  60 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE1801BJR Fiches technique(HTML) 46 Page - STMicroelectronics

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Doc ID 17884 Rev 3
11.3
Data registers
The KPC_DATA register contains five bytes of information. The first three bytes store the key
coordinates and status of any three keys from the normal key matrix, while the fourth byte
stores the status of special function keys and the fifth byte consists of the status of
dedicated keys.
Note:
When accessing the KPC DATA FIFO, it is mandatory to read all five bytes of KPC_Data
registers together consecutively.



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