米6体育平台手机版

SLAZ283AA October 2012 – May 2021 MSP430F5435

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6.35 DMA7

DMA Module

Function

DMA request may cause the loss of interrupts

Description

If a DMA request starts executing during the time when a module register containing an interrupt flags is accessed with a read-modify-write instruction, a newly arriving interrupt from the same module can get lost. An interrupt flag set prior to DMA execution would not be affected and remain set.

Workaround

1. Use a read of Interrupt Vector registers to clear interrupt flags and do not use read-modify-write instruction.

OR

2. Disable all DMA channels during read-modify-write instruction of specific module registers containing interrupts flags while these interrupts are activated.

6.35 DMA7

Category

Function

Description

Workaround