SLAZ290AC October   2012  – May 2021 MSP430F5438A , MSP430F5438A-EP

 

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6.7 CPU23

CPU Module

Category

Compiler-Fixed

Function

Rotate instruction does not function as expected

Description

When repeated rotate instructions (rrcm, rram, rrum and rlam) are applied on the Program Counter(PC), unexpected instruction execution may occur.

Workaround

Insert a NOP instruction between sequential rotate instructions performed on the PC register.

Refer to the table below for compiler-specific fix implementation information.

IDE/Compiler Version Number Notes
IAR Embedded Workbench Not affected
TI MSP430 Compiler Tools (Code Composer Studio) v4.0.x or later User is required to add the compiler or assembler flag option below. --silicon_errata=CPU23
MSP430 GNU Compiler (MSP430-GCC) MSP430-GCC 4.9 build 167 or later