cheap USB-capable MCUs: ARM 32 or AVR 8?

Ivan Shmakov · 2013-04-30T17:37:51+00:00

In the price listings that I have at hand, it seems that an USB-capable ("device" mode only needed) ATmega32U4 may cost roughly thrice the cost of a similarly USB-capable ST32F103C8T6 (at 1.65 USD a piece), at least in the 10 .. 100 pcs. range. Naturally, the latter has a whole lot of other advantages, such as larger memory (both Flash and SRAM), 3 USARTs (vs. the only one on ATmega32U4; and I may indeed need a couple), the same -40 .. +85 d. C. temperature range (the device being designed is intended for outdoor use), etc. I'm somewhat uncertain about the power consumption, and I'm not all that skilled at soldering LQFP cases (I'm going to build the prototypes by hand), but I wonder, what else I could be missing? For as it seems, the ARM 32 MCU has a clear advantage over the AVR 8 one. -- FSF associate member #7257

Apr 30, 2013 20 Replies

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toto 13 years ago

Freescale Kinetis KL2Z32 : $1.52 Cortex M0+

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cheap USB-capable MCUs: ARM 32 or AVR 8?

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