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organization of msp430

HQJ&))))
Prodigy 80 points
Other Parts Discussed in Thread: MSP430G2553

help

why the msp430 of the same family has differents numbers specified?

for example:  family x2xx , at firt time i thought that family 2 had four digits specification because of x2xx, but i find MSP430AFE2XX, MSP430G2XX, MSP430G2553 (lounch pad) with five digits, why?

and exist for example MSP430FG4619IQZWR, how do I know the family that belongs this device?

how works the organization of these microcontrollers?

somebody can explain me this?

  • 0
    Genius 3770 points

    If you go into TI's main microcontroller products page, you'll see on the left hand side a pane with a list of MSP430 categories. This the list of all the families in MSP430. So for example you have the 1-series, the 2-series, the Value Line series, the 4-series, etc.

    For your examples, the AFE in MSP430AFE2xx presumably refers to "analogue front-end", since the chips contain 24-bit sigma-delta A/Ds, however they are still in the 2xx family. The G2 chips are in the Value Line series, while the FG4xx is in the 4xx family where the G apparently indicates the presence of integrated op-amps.

    It used to be that an F prefix refers to the MCU being flash-based, while C means ROM-based, but with the flash-based G2xx value line series things are a little murkier (the G here does not refer to op-amps).

    Tony

  • 0
    Guru 227245 points

    HQJ&)))) said:
    how works the organization of these microcontrollers?
    somebody can explain me this?

    Well, the device numbering was planned whenthere were only a few MSPs. Now ther eare over 400 and you simply cannot rename older ones. So the original 'system' was externded and patched.

    However, there are some general rules that are mostly obeyed.

    MSP430, CC430 or XMS430 mark the MSP430 family. The CC430 are with internal RF transceiver, and the XMS430 are pre-production devices (this name only appears directly on the chip markings) that are (almost) identical with the MSP430 of the same name. But calibration values or such may be missing.

    The letters after the 430 indicate a special class. Usually 'F' (normal flash). 'C' was mask-programmed ROM (obsolete). The 'G' are the value line. AFE are MSPs with ADCs for energy measurement (tolerant to negative input voltage on the ADCs: no clamp diodes to GND).

    The first number after the letters denotes the family. 1,2,3 (discontinued), 4, 5+6. Each of them has its own users guide. MSPs inside one family share the same clock model and a generic characteristics. 4x family has LCD controller. 5+6 have a core voltage regulator (6 is 5 + LCD controller).
    An exception are the FR57 and FR58 devices, which has FRam (hence FR) and are different from the F5+6 family. With two separate users guides. (yes, the available numbers are running low).

    The remaining 3 digits usually (with some exceptions) denote a group of MSPs with a similar set of hardware modules and pin compatibility, the 3rd digit usually indicating different ram/flash sizes while the last digit usually distinguishes between MSP with a certain feature present or not but otherwise identical. Like ADC on ending '3' while comparator on ending '2'.

    The letters at the end indicate the package and packing information. 'I' means 'industrial operating range' (<85°C, few MSPs are available with military specs, we,g, up to 125°C), 'ZQW' is 113 ball BGA package and hte 'R' means on reel (>1000, in this case 2500 units), while 'T' would mean on tape (or tray?). (here 250 units). These details are found in the individual device datasheet.
    For electrical funcitonality, these letters are unimportant.

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