Texas Instruments Errata MSP430F6779, Руководство пользователя

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IDE/Compiler Version Number Notes
IAR Embedded Workbench Not affected
C code is not impacted by this bug.
User using POPM instruction in
assembler is required to implement
the above workaround manually.
TI MSP430 Compiler Tools (Code
Composer Studio)
Not affected
C code is not impacted by this bug.
User using POPM instruction in
assembler is required to implement
the above workaround manually.
MSP430 GNU Compiler (MSP430-
GCC)
Not affected
C code is not impacted by this bug.
User using POPM instruction in
assembler is required to implement
the above workaround manually.
CPU47
CPU Module
Category
Functional
Function An unexpected Vacant Memory Access Flag (VMAIFG) can be triggered
Description An unexpected Vacant Memory Access Flag (VMAIFG) can be triggered, if a PC-
modifying instruction (e.g. - ret, push, call, pop, jmp, br) is fetched from the last addresses
(last 4 or 8 byte) of a memory (e.g.- FLASH, RAM, FRAM) that is not contiguous to a
higher, valid section on the memory map.
In debug mode using breakpoints the last 8 bytes are affected.
In free running mode the last 4 bytes are affected.
Workaround Edit the linker command file to make the last 4 or 8 bytes of affected memory sections
unavailable, to avoid PC-modifying instructions on these locations.
Remaining instructions or data can still be stored on these locations.
DMA4
DMA Module
Category
Functional
Function Corrupted write access to 20-bit DMA registers
Description When a 20-bit wide write to a DMA address register (DMAxSA or DMAxDA) is interrupted
by a DMA transfer, the register contents may be unpredictable.
Workaround 1. Design the application to guarantee that no DMA access interrupts 20-bit wide
accesses to the DMA address registers.
OR
2. When accessing the DMA address registers, enable the Read Modify Write disable bit
(DMARMWDIS = 1) or temporarily disable all active DMA channels (DMAEN = 0).
OR
3. Use word access for accessing the DMA address registers. Note that this limits the
values that can be written to the address registers to 16-bit values (lower 64K of Flash).
DMA7
DMA Module
www.ti.com Advisory Descriptions
SLAZ350AD – OCTOBER 2012 – REVISED MAY 2021
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MSP430F6779 Microcontroller 13
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