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EM357-RTR 数据表(PDF) 218 Page - List of Unclassifed Manufacturers |
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EM357-RTR 数据表(HTML) 218 Page - List of Unclassifed Manufacturers |
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218 / 240 page ![]() EM351 / EM357 16-2 120-035X-000D Preliminary 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 Chapter 7, GPIO. 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. |
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