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STMPE1601 Arkusz danych(PDF) 34 Page - STMicroelectronics

Numer części STMPE1601
Szczegółowy opis  16-bit enhanced port expander with keypad and PWM controller Xpander Logic
PDF  61 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE1601 Arkusz danych(HTML) 34 Page - STMicroelectronics

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10.4
Level translator feature
Figure 7.
Level translator feature
When enabled, the GPIO 0-7 bits are internally mapped to GPIO 8-15 bits. The
STMPE1601 becomes an 8-channel level translator where each of the channels may have
its direction set individually. As GPIO 0-7 operates from Vcc, and GPIO 8-15 operates from
Vio, this allows the 2 groups of GPIO to work as a level translator.
Warning:
When the level translator feature is enabled, the “Set pin”,
“Clear pin” and “Set direction” bits in the corresponding
registers will be ignored. However, the “Monitor pin”, “Edge
detect”, “Pull-up” features are still available in the GPIOs
used as level translator.
GPIO
0-7
GPIO
8-15
Direction
&
enable



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