SPRAD67B December 2022 – September 2024 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
The processor family supports seven dual-voltage IO groups (VDDSHVx [x = 0..5] and VDDSHV_MCU), where each IO group provides power to a predefined set of IOs. Each IO group can be individually configured for 3.3V or 1.8V. This supply powers all the predetermined IOs in the IO supply group. All IOs (attached devices) connected to these IO groups must be powered from the same power source that is being used to power the respective processor Dual-voltage IO groups (VDDSHVx supply rail).
Most of the processor IOs are not fail-safe. For information on available fail-safe IOs, see the device-specific data sheet. It is recommended to power the IO supply of the attached devices from the same power source as the respective processor dual-voltage IO groups (VDDSHVx supply rail) to make sure the system or board never applies potential to an IO that is not powered. This is needed to protect the IOs of the processor and the attached devices.
For more information, see [FAQ] AM625 / AM623 Custom board hardware design – Power sequencing between SOC (Processor) and the Attached devices (Fail-safe). This is a generic FAQ and can also be used for the AM64x or AM243x family of processors.
The available IO group information is summarized in the following list: