Find Wireless ARM MCU

Hello everyone,

I’m looking for recommendations for a wireless ARM-based MCU for a research prototype.

Target specifications:

  • 32-bit ARM MCU with operating frequency > 78 MHz

  • On-chip ≥ 512 KB Flash and ≥ 64 KB RAM

  • Integrated low-power wireless radio (Sub-GHz preferred)

  • Integrated power amplifier ¶ supporting up to 20 dBm TX output

  • Small package options preferred (QFN or WLCSP)

In addition, I’d like to know whether any suitable devices are available as bare die, known good die (KGD).

If possible, please also share links to datasheets, reference designs, and current availability.

Thanks in advance for your help.

Hi cylee,

Welcome to the TechForum.

The available parts from Silicon Labs in this link seem to meet many of your stated specs, though the smaller EFR32FG13 parts only operate at 40MHz, so that may not be sufficient for you.

Most of these will have development tools available, and we link some documentation for each within their respective product detail pages. I would start by looking at those a bit and perhaps checking out other information here and on the Silicon Labs website for those part families.

Why specifically 78Mhz?

CC1354R10 would be interesting Cortex-M33 at 48Mhz

Regards,

Hi @David_1528,
Thank you for the information and for pointing me to the relevant Silicon Labs parts. I will review the product details and available documentation.

In the meantime, could you please let me know whether any of these devices are available as bare die or known good die (KGD)?

Hi @RobertCNelson,

The 78 MHz target comes from our current reference platform. We are mainly looking for devices with similar overall capabilities.

At the same time, our key interest is whether any such devices are available as bare die or known good die (KGD) for research purposes.

Thanks for the suggestion.

Hi cylee,

Regarding the bare die option, we generally don’t handle that sort of thing, as it’s not conducive to handling in a distribution environment. That’s typically more of a direct-with-the-manufacturer sort of thing. It’s likely that for the right volume, they’d consider it.

As an aside, the parts I suggested are from Silicon Labs, and those suggested by @RobertCNelson are from Texas Instruments (TI), and at the moment, there’s an agreement for TI to acquire SiLabs (pending governmental approvals), so both families of parts would eventually be TI parts.

Hi @David_1528 ,
Thank you for your information.