SLAZ095Z October 2012 – May 2021 CC430F5143
DMA Module
Functional
DMA access may cause invalid module operation
The peripheral modules MPY, CRC, USB, RF1A and FRAM controller in manual mode can stall the CPU by issuing wait states while in operation. If a DMA access to the module occurs while that module is issuing a wait state, the module may exhibit undefined behavior.
Ensure that DMA accesses to the affected modules occur only when the modules are not in operation. For example with the MPY module, ensure that the MPY operation is completed before triggering a DMA access to the MPY module.