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Original question:

TM4C1294KCPDT: TM4C1294KCPD . Error when start debug: GEL : file xxx.out Does not match the target endianness, not loaded...

TM4C1294KCPDT: Pin 87 & Pin115 supply requirement

Beida Song
Intellectual 870 points
Part Number: TM4C1294KCPDT


Tool/software:

Hi Expert,

Customer wants to know the power supply requirement for pin 85 & pin115. They find it's external power supply 1.2V. Besides, is there other detailed requirements, such as ripple or other things?

The device is TM4C1294KCPDT13.

  • 0
    TI__Guru**** 191906 points

    Hi,

      Please follow the recommendation for VDDC described in the TM4C129 System Design Guideline. Filter capacitors totaling 3.3uF to 3.4uF is recommended. 

    3.4.2 LDO Filter Capacitor (VDDC)

    All TivaTm C Series microcontrollers have an on-chip voltage regulator to provide power to the core. The voltage regulator requires a filter capacitor to operate properly (see the CLDO parameter in the corresponding microcontroller data sheet for acceptable capacitor value range). The CLDO capacitance is the sum of the capacitor values on the VDDC pins. The recommended VDDC capacitor solution, taking tolerance into account, consists of two or more 10%-tolerance ceramic chip capacitors totaling 3.3μF to 3.4μF (examples are, one each of 3.3μF and 0.1μF capacitors or one each 2.2μF, 1.0μF and 0.1μF). Z5U dielectric capacitors are not recommended due to wide tolerance over temperature.