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AM69 Datasheet(PDF) 164 Page - Texas Instruments |
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AM69 Datasheet(HTML) 164 Page - Texas Instruments |
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164 / 312 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. AM69A, AM69 SPRSP92C – FEBRUARY 2023 – REVISED JUNE 2024 www.ti.com 164 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated Product Folder Links: AM69A AM69 |
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