STMPE1801BJR datasheet(23/60 Pages) STMICROELECTRONICS

поискавой системы для электроныых деталей

STMPE1801BJR датащи(PDF) 23 Page - STMicroelectronics

номер детали	STMPE1801BJR

подробное описание детали	Xpander Logic™ 18-bit enhanced port expander with keypad controller

PDF	60 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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23 / 60 page

STMPE1801

Clocking system

Doc ID 17884 Rev 3

23/60

8.0.2

Power mode programming sequence

The device enters auto Hibernate mode when there is inactivity for a fixed period of time.

To wake up the device, the host is required to:

–

Send an I2C transaction to the device.

To do a soft reset to the device, the host needs to do the following:

–

Write a '1' to bit 7 of the SYS_CTRL register. This bit is automatically cleared upon

reset.

To come out of the Hibernate mode, the following needs to be done by the host:

–

Assert a system reset

–

Or put a wakeup on the I2C transaction

–

Interrupt activity

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