STMPE1801BJR datasheet(21/60 Pages) STMICROELECTRONICS

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STMPE1801BJR Fiches technique(PDF) 21 Page - STMicroelectronics

No de pièce	STMPE1801BJR

Description	Xpander Logic™ 18-bit enhanced port expander with keypad controller

PDF	60 Pages

Scroll/Zoom	100%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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21 / 60 page

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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