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STMPE1801 数据表(PDF) 21 Page - STMicroelectronics

部件名 STMPE1801
功能描述  Xpander Logic™ 18-bit enhanced port expander with keypad controller
PDF  60 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STMPE1801 数据表(HTML) 21 Page - STMicroelectronics

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STMPE1801
System controller
Doc ID 17884 Rev 3
21/60
Any keypad activity, interrupt event, hotkey activity or VALID I2C transaction wakes up the
device from Hibernate mode and switches to operational mode automatically.
7.2.2
Keypress detect in the Hibernate mode
When in Hibernate mode, any keypress detected causes the system to go into operational
mode (~48 µs). The system will then de-bounce the key to detect a valid key. If the keypress
detected is valid, the system stays in operation mode. If the key detected is invalid, the
system goes back into Hibernate mode.



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