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Multiplier inside the MSP430f2013

John Moore39
Expert 1470 points
Other Parts Discussed in Thread: MSP430F2013, MSP430F2418

Dear experts:

     The MSP430f2013's data sheet doesn't mention a hardware multiplier.  Neither does the selector guide.

     However the user's guide for this chip talks about the multiplier which appears to be 16x16.  Also the chip seems to have a hardware multiplier based on power consumption.

This is confusing!

Thanks,

John

  • 0
    Guru 58965 points
    There is no user's guide specifically for this chip. You probably mean the "MSP430x2xx User’s Guide" which covers all members of that family that may have hardware multiplier.
  • 0
    Guru 74080 points

    Hi John!

    I'm not aware of the fact that the small MSP430F2013 has a hardware multiplier. I would say it has none.

    If you check the header file for the different MSPs, you can search for the line

    #define __MSP430_HAS_MPY__

    If it is defined, then your MSP has one, if not, then there is no multiplier module available. Just did a quick search - here from a MSP430F2418

    /************************************************************
* HARDWARE MULTIPLIER
************************************************************/
#define __MSP430_HAS_MPY__                    /* Definition to show that Module is available */

SFR_16BIT(MPY);                               /* Multiply Unsigned/Operand 1 */
SFR_16BIT(MPYS);                              /* Multiply Signed/Operand 1 */
SFR_16BIT(MAC);                               /* Multiply Unsigned and Accumulate/Operand 1 */
SFR_16BIT(MACS);                              /* Multiply Signed and Accumulate/Operand 1 */
SFR_16BIT(OP2);                               /* Operand 2 */
SFR_16BIT(RESLO);                             /* Result Low Word */
SFR_16BIT(RESHI);                             /* Result High Word */
SFR_16BIT(SUMEXT);                            /* Sum Extend */

    And searching in the MSP430F2013's header file doesn't show you any entry. Same for searching "HARDWARE MULTIPLIER". So this processor does not seem to have one.

    Dennis

  • 0
    TI__Prodigy 735 points

    Hi John,


    the MSP430F2013 does not have a hardware multiplier. If such module is available, it is shown in the functional block diagram of the specific device.

    As old_cow_yellow explained correctly, the users guide is not specific to a single device. It describes the modules that are available in the entire device family.

    Thanks and best regards,

    Christoph

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