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AM69 Datasheet(PDF) 171 Page - Texas Instruments |
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AM69 Datasheet(HTML) 171 Page - Texas Instruments |
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171 / 326 page  6.10.2.4 Isolated MCU and Main Domains Power- Up Sequencing Isolated MCU and Main voltage domains enable an SoC’s MCU and Main processor sub-systems to operate independently. There are 2 reasons an SoC’s PDN design may need to support independent MCU and Main processor functionality. First is to provide flexibility to enable SoC low power modes that can significant reduce SoC power dissipation when processor operations are not needed. Second is to enable robustness to gain freedom from interference (FFI) of a single fault impacting both MCU and Main processor sub-systems which is especially beneficial if using the SoC’s MCU as the system safety monitoring processor. The number of additional PDN power rails needed is dependent upon number of different MCU IO signaling voltage levels. If only 1.8V IO signaling is used, then only 2 additional power rails could be required. If both 1.8 and 3.3V IO signaling is desired, then 4 additional power rails could be needed. www.ti.com AM69A, AM69 SPRSP92D – FEBRUARY 2023 – REVISED DECEMBER 2024 Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 171 Product Folder Links: AM69A AM69 |
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