Texas Instruments MSP430FG6626 Manuel utilisateur
Errata
MSP430FG6626 Microcontroller
ABSTRACT
This document describes the known exceptions to the functional specifications (advisories).
Table of Contents
1 Functional Advisories............................................................................................................................................................ 2
2 Preprogrammed Software Advisories.................................................................................................................................. 2
3 Debug Only Advisories.......................................................................................................................................................... 2
4 Fixed by Compiler Advisories............................................................................................................................................... 3
5 Nomenclature, Package Symbolization, and Revision Identification................................................................................ 4
5.1 Device Nomenclature.........................................................................................................................................................4
5.2 Package Markings..............................................................................................................................................................4
5.3 Memory-Mapped Hardware Revision (TLV Structure)....................................................................................................... 5
6 Advisory Descriptions............................................................................................................................................................6
7 Revision History................................................................................................................................................................... 22
www.ti.com Table of Contents
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1 Functional Advisories
Advisories that affect the device's operation, function, or parametrics.
✓ The check mark indicates that the issue is present in the specified revision.
Errata Number
Rev A
COMP10 ✓
CPU37 ✓
CPU47 ✓
CTSD1 ✓
DAC5 ✓
DMA4 ✓
DMA7 ✓
DMA10 ✓
LCDB5 ✓
LCDB6 ✓
PMM11 ✓
PMM12 ✓
PMM14 ✓
PMM15 ✓
PMM18 ✓
PMM20 ✓
PMM26 ✓
PORT15 ✓
PORT19 ✓
RTC16 ✓
TB25 ✓
UCS11 ✓
USCI26 ✓
USCI34 ✓
USCI35 ✓
USCI39 ✓
USCI40 ✓
2 Preprogrammed Software Advisories
Advisories that affect factory-programmed software.
✓ The check mark indicates that the issue is present in the specified revision.
Errata Number
Rev A
BSL14 ✓
3 Debug Only Advisories
Advisories that affect only debug operation.
✓ The check mark indicates that the issue is present in the specified revision.
Errata Number
Rev A
EEM16 ✓
Functional Advisories www.ti.com
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Errata Number
Rev A
EEM17 ✓
EEM19 ✓
EEM23 ✓
4 Fixed by Compiler Advisories
Advisories that are resolved by compiler workaround. Refer to each advisory for the IDE and compiler versions
with a workaround.
✓ The check mark indicates that the issue is present in the specified revision.
Errata Number
Rev A
CPU21 ✓
CPU22 ✓
CPU40 ✓
Refer to the following MSP430 compiler documentation for more details about the CPU bugs workarounds.
TI MSP430 Compiler Tools (Code Composer Studio IDE)
•MSP430 Optimizing C/C++ Compiler: Check the --silicon_errata option
•MSP430 Assembly Language Tools
MSP430 GNU Compiler (MSP430-GCC)
•MSP430 GCC Options: Check -msilicon-errata= and -msilicon-errata-warn= options
•MSP430 GCC User's Guide
IAR Embedded Workbench
•IAR workarounds for msp430 hardware issues
www.ti.com Fixed by Compiler Advisories
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5 Nomenclature, Package Symbolization, and Revision Identification
The revision of the device can be identified by the revision letter on the Package Markings or by the HW_ID
located inside the TLV structure of the device.
5.1 Device Nomenclature
To designate the stages in the product development cycle, TI assigns prefixes to the part numbers of all MSP
MCU devices. Each MSP MCU commercial family member has one of two prefixes: MSP or XMS. These
prefixes represent evolutionary stages of product development from engineering prototypes (XMS) through fully
qualified production devices (MSP).
XMS – Experimental device that is not necessarily representative of the final device's electrical specifications
MSP – Fully qualified production device
Support tool naming prefixes:
X: Development-support product that has not yet completed Texas Instruments internal qualification testing.
null: Fully-qualified development-support product.
XMS devices and X development-support tools are shipped against the following disclaimer:
"Developmental product is intended for internal evaluation purposes."
MSP devices have been characterized fully, and the quality and reliability of the device have been demonstrated
fully. TI's standard warranty applies.
Predictions show that prototype devices (XMS) have a greater failure rate than the standard production devices.
TI recommends that these devices not be used in any production system because their expected end-use failure
rate still is undefined. Only qualified production devices are to be used.
TI device nomenclature also includes a suffix with the device family name. This suffix indicates the temperature
range, package type, and distribution format.
5.2 Package Markings
ZQW113 BGA (ZQW), 113 Pin
PZ100 LQFP (PZ) 100 Pin
Nomenclature, Package Symbolization, and Revision Identification www.ti.com
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ZCA113 NFBGA (ZCA), 113 Pin
5.3 Memory-Mapped Hardware Revision (TLV Structure)
Die Revision TLV Hardware Revision
Rev A 10h
Further guidance on how to locate the TLV structure and read out the HW_ID can be found in the device User's
Guide.
www.ti.com Nomenclature, Package Symbolization, and Revision Identification
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6 Advisory Descriptions
BSL14 BSL Module
Category Software in ROM
Function BSL request to unlock the JTAG
Description The feature in the BSL to keep the JTAG unlocked by setting the bit
BSL_REQ_JTAG_OPEN in the return value has been disabled in this device.
Workaround None
COMP10 COMP Module
Category Functional
Function Comparator port output toggles when entering or leaving LPM3/LPM4
Description The comparator port pin output (CECTL1.CEOUT) erroneously toggles when device
enters or leaves LPM3/LPM4 modes under the following conditions:
1) Comparator is disabled (CECTL1.CEON = 0)
AND
2) Output polarity is enabled (CECTL1.CEOUTPOL = 1)
AND
3) The port pin is configured to have CEOUT functionality.
For example, if the CEOUT pin is high when the device is in Active Mode, CEOUT pin
becomes low when the device enters LPM3/LPM4 modes.
Workaround When the comparator is disabled, ensure at least one of the following:
1) Output inversion is disabled (CECTL.CEOUTPOL = 0)
OR
2) Change pin configuration from CEOUT to GPIO with output low.
CPU21 CPU Module
Category Compiler-Fixed
Function Using POPM instruction on Status register may result in device hang up
Description When an active interrupt service request is pending and the POPM instruction is used to
set the Status Register (SR) and initiate entry into a low power mode , the device may
hang up.
Workaround None. It is recommended not to use POPM instruction on the Status Register.
Refer to the table below for compiler-specific fix implementation information.
Advisory Descriptions www.ti.com
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CPU21 (continued) CPU Module
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=CPU21
MSP430 GNU Compiler (MSP430-
GCC) MSP430-GCC 4.9 build 167 or later
CPU22 CPU Module
Category Compiler-Fixed
Function Indirect addressing mode with the Program Counter as the source register may produce
unexpected results
Description When using the indirect addressing mode in an instruction with the Program Counter (PC)
as the source operand, the instruction that follows immediately does not get executed.
For example in the code below, the ADD instruction does not get executed.
mov @PC, R7
add #1h, R4
Workaround 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=CPU22
MSP430 GNU Compiler (MSP430-
GCC) MSP430-GCC 4.9 build 167 or later
CPU37 CPU Module
Category Functional
Function Wrong program trace display in the debugger while using conditional jump instructions
Description The state storage window displays an incorrect sequence of instructions when:
1. Conditional jump instructions are used to form a software loop
AND
2. A false condition on the jump breaks out of the loop
In such cases the trace buffer incorrectly displays the first instruction of the loop as the
instruction that is executed immediately after exiting the loop.
Example:
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CPU37 (continued) CPU Module
Actual Code:
mov #4,R4
LABEL mov #1,R5
dec R4
jnz LABEL
mov #2,R6
nop
State Storage Window Displays:
LABEL mov #1,R5
dec R4
jnz LABEL
mov #1,R5
nop
Workaround None
Note: This erratum affects the trace buffer display only. It does not affect code execution in
debugger or free run mode
CPU40 CPU Module
Category Compiler-Fixed
Function PC is corrupted when executing jump/conditional jump instruction that is followed by
instruction with PC as destination register or a data section
Description If the value at the memory location immediately following a jump/conditional jump
instruction is 0X40h or 0X50h (where X = don't care), which could either be an instruction
opcode (for instructions like RRCM, RRAM, RLAM, RRUM) with PC as destination
register or a data section (const data in flash memory or data variable in
RAM), then the PC value is auto-incremented by 2 after the jump instruction is executed;
therefore, branching to a wrong address location in code and leading to wrong program
execution.
For example, a conditional jump instruction followed by data section (0140h).
@0x8012 Loop DEC.W R6
@0x8014 DEC.W R7
@0x8016 JNZ Loop
@0x8018 Value1 DW 0140h
Workaround In assembly, insert a NOP between the jump/conditional jump instruction and program
code with instruction that contains PC as destination register or the data section.
Refer to the table below for compiler-specific fix implementation information.
IDE/Compiler Version Number Notes
IAR Embedded Workbench IAR EW430 v5.51 or later
For the command line version add
the following information Compiler:
--hw_workaround=CPU40
Assembler:-v1
Advisory Descriptions www.ti.com
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CPU40 (continued) CPU Module
IDE/Compiler Version Number Notes
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=CPU40
MSP430 GNU Compiler (MSP430-
GCC) Not affected
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.
CTSD1 CTSD Module
Category Functional
Function CTSD16OFFG bit erroneously set while CTSD16 module is inactive
Description The CTSD16CTL.CTSD16OFFG bit is erroneously set when the CTSD16 module
is disabled and not actively converting (CTSD16CCTLx.CTSD16SC = 0). This
CTSD16CTL.CTSD16OFFG bit can only be cleared once the CTSD16 module is enabled
and actively converting (CTSD16CCTLx.CTSD16SC = 1).
This errata effectively nullifies the ability to trigger NMI interrupts in response to oscillator
faults, unless CTSD16 is kept enabled.
Workaround 1) If CTSD16 is enabled, and the fault condition is ensured not to be present, then
CTSD16OFFG and OFIFG can function normally. The only way to keep CTSD16 enabled
indefinitely is by setting CTSD16SC.
2) While CTSD16 is not enabled, the OFIFG bit cannot be used. The other bits sourcing
into it besides CTSD16OFFG (that is, XT1LFOFFG, XT1HFOFFG, XT2OFFG, and
DCOFFG) can be polled or checked by software individually; but the ability to trigger
the NMI upon OFIFG becoming set is no longer possible.
DAC5 DAC Module
Category Functional
Function Switching events on alternative DAC output pins can change output level of active DAC
output pin.
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DAC5 (continued) DAC Module
Description When the DAC output has multiple pin output options, switching events on unused
alternate pin output options, such as GPIO output voltage level transitions and pulses or
input signals that pass GPIO high or low thresholds, dynamically affect the output voltage
level of the DAC output in use. This effect only lasts for a short period after the switching
event.
Workaround If the dynamic voltage level effect on the chosen DAC output cannot be tolerated, see the
workarounds below:
A. Avoid high to low or low to high transitions on the alternate DAC output pin when
selected DAC output pin is active. Keep alternate pin pulled high or low when DAC is in
use.
B. Do not use pin featuring alternative DAC output, and keep in an output low state.
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
Category Functional
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.
Advisory Descriptions www.ti.com
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