EM357-RTR datasheet(208/241 Pages) SILABS

Datenblatt-Suchmaschine für elektronische Bauteile

EM357-RTR Datenblatt(PDF) 208 Page - Silicon Laboratories

Teilenummer	EM357-RTR

Bauteilbeschribung	High-Performance, Integrated ZigBee/802.15.4 System-on-Chip

PDF	241 Pages

Scroll/Zoom	100%

Hersteller	SILABS [Silicon Laboratories]

Direct Link	http://www.silabs.com

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208 / 241 page

208

Rev 1.3

An external 1.8 V regulator may replace both internal regulators. The EM35x can control external regulators during

deep sleep using open-drain GPIO PA7, as described in "7. GPIO (General Purpose Input/Output)" on page 50.

The EM35x drives PA7 low during deep sleep to disable the external regulator, and an external pull-up is required

to release this signal to indicate that supply voltage should be provided. Current consumption increases

approximately 2 mA when using an external regulator. When using an external regulator, the internal regulators

should be disabled through Ember software. The always-on domain needs to be minimally powered at 2.1 V and

cannot be powered from the external 1.8 V regulator.

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