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CC3220SF: Options for replacing legacy Intel MCS51

Scott Shaw2
Prodigy 30 points
Part Number: CC3220SF


We're looking at a number of legacy product with 8-bit Intel in need of upgrade.

From my reading of the CC3220SF data sheet, the GPIO levels of the 3.3 V part are too low for the 5 V circuit.  Agree?  Adding level shifters and other circiutry would exceed available space and likely makes us bite the bullet and do a new layout.

Very interested in adding OTA, but little interest in the AD features.  What TI microcontrollers are in this performance category and 5 V?

We're looking at an Altera fpga and a NIOS.  Do TI microcontrollers have on-chip programmable logic?

A Zynq part is physically larger and overkill performance-wise. I looked at “Products” in the TI website and don’t see parts with programmable logic sections a’la Xilinx.

Grateful for any ideas.

  • 0
    TI__Mastermind 22935 points

    Hi Scott,

    This might be a silly question but does the device require Wi-Fi connectivity? You can see all our micro-controllers here organized by category. I don't believe our MCUs have programmable logic controllers.

    Jesu

  • 0 in reply to Jesu
    Guru 39650 points

    Hi Scott,

    In the addition to answer from Jesu. Your requirements are such opposite that I am not sure if exists any modem MCU with higher performance and TTL capability. Your requirements are completely opposite. It is hard to create modern performance MCU with 5V capability due to modern low power manufacturing processes. Here is nice article about 5V tolerant usage of TM4C123x. As Jesu mentioned it not make sense select CC3220 if you don't want to use WiFi connectivity.

    Comment to FPGAs. Usage of CC3220 (or any Cortex-Mx) with voltage shifters is much easier and requires much less PCB space than modern FPGA. Do not forgot that modern FPGAs are very complex devices and requires many separate voltage rails. It may to be 5 and more different voltages with voltage sequencing. For example Zynq-7000 is not 5V tolerant and requires 12x power rails. And low entry Cyclone II FPGA for NIOS is big device as well (and not 5V tolerant at all).

    Jan

  • 0 in reply to Jesu
    Prodigy 30 points

    Thanks Jesu.  Most product has firmware upgradeable in the field, a few do not.  I think the WIFI capability is an option for an OTA upgrade feature.

    I'll continue looking, using your link.

    Thanks.

    Scott S.

  • 0 in reply to Hnz
    Prodigy 30 points

    Jan.  Thanks for the link.  It sounded easy when we first started to discuss the idea that we could "plunk down a different processor chip".  But the truth of it is that there are many factors;  some as simple as real estate, and some more complicated such as powering and level shifting into the existing circuit.

    Thanks.

    Scott S.