Working with the Renesas RA4M1 Microcontroller

RE: Working with the Renesas RA4M1 Microcontroller

Diego56 — Tue, 16 Dec 2025 04:44:27 GMT

What about using plain C instead of C++?

RE: Working with the Renesas RA4M1 Microcontroller

DAB — Sat, 29 Apr 2023 19:07:01 GMT

Very good review.

I look forward to seeing you put it to good use.

RE: Working with the Renesas RA4M1 Microcontroller

Andrew J — Sat, 29 Apr 2023 10:20:38 GMT

Interesting - reminds me of the roadtest I did for the Renesas Envision kit for the RX65N. That had an unfortunate time-limited software licence for some parts of the dev environment which was frustrating as I agree, the documentation and quality of product from Renesas is very good. You didn’t mention any limitation here so perhaps they’ve improved that aspect!

RE: Working with the Renesas RA4M1 Microcontroller

misaz — Fri, 28 Apr 2023 22:00:11 GMT

RA MCUs are very good. I personaly consider them as best replacement for STM32. The only disadvantage of MCU platform I see very few peripheral features in peripheral drivers provided by e2 studio (unsupported features you need to control by register access). STM32 HAL is much more compheresive.

I have EK-RA6M4 and EK-RA2L1 which I roadtested [mention:d77c8f0cb20e45e0ab3249279678e76e:f7d226abd59f475c9d224a79e3f0ec07] . They are both very good kits and I like that Renesas follow stadard structure of these kits (with few exceptions like RA4M1 :) ). Over the years I found only one caveat of these kits. Power consumption. Renesas used their own high power LDO (2A max), but high-power LDO is opposite to low-power and especialy on kit of RA2L1 which is low-power MCU it is quite pitty that while MCU has sleep power 0.5uA but onboard LDO has quiscent current of 10mA..... Otherwise they are most probably the best kit which I have ever seen and I like working with them.

RE: Working with the Renesas RA4M1 Microcontroller

genebren — Fri, 28 Apr 2023 21:47:57 GMT

Interesting processor! I had picked up several Renesas development kits years ago at various conferences/conventions, but I could never get motivated enough (or find sufficient time) to attempt to use them. Now I am sure they are out of date and no longer useful.

I am impressed that they are supporting LQFP packages, which I find infinitely more solderable.

I will be interested to see what other projects you come up with using this processor.