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looking for PCB can handle at least 35 channels of ADC. already found LAUNCHXL2-570LC43 & LAUNCHXL2-RM57L

TODD HANYUAN SONG
Prodigy 60 points
Other Parts Discussed in Thread: LAUNCHXL2-570LC43, LAUNCHXL2-RM57L

Dear all,

1.Firstly, I am looking for the PCB(or called Launchpad) has MCU can handle at least 35 ADC at same time. Basically, I have 35 sensor working at same time, I need plug into the ADC input pins. I found  LAUNCHXL2-570LC43(MCU:TMS570C4357) & LAUNCHXL2-RM57L(mcu:RM57L843). Am I in the correct direction??

2. I could not find any pin map/connection map for those two board. I am not sure what is the actual layout the PCB

 2-1) I found the schematics For LAUNCHXL-570LC43, processors.wiki.ti.com/.../LAUNCHXL2_570LC43_RM57L_SCHEMATICS.pdf. U1A-U1D are standing for what meaning. I just want make sure if I got notification correctly.

2-2) Page 8&7 title "BOOSTER PACK 1/2". I know it help to develop. But what is really it? Are they add-ons? Do I have to purchase the booster pack in order to access the pins? I need 35 input pins, lots of wires to connect.

3. RM57L and 570LC43 share the same schematics? The ti.wiki link is the same page. The pcb is EXACTLY same pin layout? I am assuming they use different MCU, should not be different layout?

4. I also found datasheet  LAUNCHXL2-RM57L( user manual) in Development kit :www.ti.com/.../spnu598.pdf. 

The board color is GREEN, it is not red base color as shown in product list. I am so confusing now.

4-1)Is this board I am going to get?

4-2)Or the Red board?

4-3) Should I follow the schematics? or the user manual of development kit?

5. What is different between development kit and Evaluation Kit ?

I got lots of boring questions. Thanks for your time.

  • 0
    TI__Guru**** 191346 points

    Hi Todd,

      1. RM57L/LC4357 MCU both support a total of 41 independent ADC channels. They are similar. The LC4357 has additional support for Flexray communication while RM57L does not. RM57L however operates at a higher frequency (330MHz) vs. 300MHz as in LC4357. The LC4357 is a big endian device while RM57L is a little endian device. These are the basic difference. As far as the # of supported ADC channels they are the same.

      2. Booster pack 1/2 are add-ons. You will need to purchase them separately. But we don't have bootster packs to bring out the 35 ADC channels. The various ADC channels can be accessed via different connectors on the launchpad. For example on the Booster site 1 (J1-J4) there are 8 ADC channels, in bootster site 2 (J5-J8) there are another 8 ADC channels, in the J9, there are 16 ADC channels and in J14 there are 8 ADC channels. You need to solder a headers/connectors to them. 

     3. See #1 for answer.

     4. The HDK as described in spnu598.pdf is a different and more expensive development kit and may be referenced for your final board design. The Launchpad is a low cost evaluation kit to get started with Hercules products. If you want to have access to all the ADC channels the MCU has to offer then you want to go with the launchpad (red board). The HDK board (green board) does not bring out all the ADC channels. It will be less than 35 channels on HDK board.

     5. See #5. Also the Launchpad is $30 while the HDK is $200.

        

  • 0 in reply to Charles Tsai
    Prodigy 60 points
    Thx for your reply. I have one more concern
    RM57L and 570LC43 share the same schematics? exactly the same design? Do I get datasheet with the layout of pin connection map coming in the package? just like the HDK manual page 9(www.ti.com/.../getliterature.tsp. Why am I asking the non-sense questions, I am not sure the schematics for those two PCBs are goodd reference, they are different board but same layout?
    Thank you very much
    Todd
  • 0 in reply to Charles Tsai
    Prodigy 60 points
    the previous link i posted is hidden, the HDK link: www.ti.com/.../tmdxrm57lhdk. user guide is the first doc.
  • 0 in reply to TODD HANYUAN SONG
    TI__Guru**** 191346 points
    Hi Todd,
    Other than the quick start userguide that comes with the launchpad there is no additional userguide. You will need to reference the schematic for details of the un-populated signals that are not described in the quick start userguide. See the page Both board schematic are the same. For example, see page 7,8,9 and 14 for the ADC pin connection map.
  • 0 in reply to Charles Tsai
    Prodigy 60 points
    Hello Charles,
    Thank you so much.
    the Schematics link::::: processors.wiki.ti.com/.../LAUNCHXL2_570LC43_RM57L_SCHEMATICS.pdf are reliable for both development boards?
    If that is the case, they must peg to the same design for two different MCU. That is my concern.
    Thank you
  • 0 in reply to TODD HANYUAN SONG
    TI__Guru 68920 points
    The PCB design is the same for both devices.
    We keep pin compatibility across hercules products so you as a customer can also
    put different MCUs on the same PCB as needed. [i.e. increase memory or performance w.o. redesign of PCB]