SLAZ283AA October   2012  – May 2021 MSP430F5435

 

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CPU15

CPU Module

Category

Compiler-Fixed

Function

Modifying the PC behaves differently than in previous devices.

Description

When using instructions with immediate or indirect addressing mode to modify the PC, a different value compared to previous devices must be added to get to the same destination.

Example:
  Previous device (MSP430F4619)
label_1 ADD.W #Branch1-label_1-4h,PC

  MSP430F5438:                  
label_1 ADD.W #Branch1-label_1-2h,PC

-----------------------------------------
NOTE: The MOV instruction is not affected
-----------------------------------------

Workaround

1) Add NOP after the PC-modifying instruction
  or
2) Change the offset value in software

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

IDE/Compiler Version Number Notes
IAR Embedded Workbench IAR EW430 v6.40.1 or later User is required to add the option below to the linker. Linker:-D?CPU15_OFFSET=2
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=CPU15
MSP430 GNU Compiler (MSP430-GCC) Not affected