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| Small and cheap MCU with DAC |
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| wraper:
--- Quote from: Unixon on December 16, 2018, 04:25:06 pm ---These are computationally more powerful than STM32F03x but more expensive at the same time. --- End quote --- They are 8 bit, so generally they are slower than STM32F03x for computations. EFM8BB3 is 1.5-2x cheaper than STM32F03x depending on quantity. |
| Unixon:
--- Quote from: wraper on December 16, 2018, 04:36:05 pm ---They are 8 bit, so generally they are slower than STM32F03x for computations. EFM8BB3 is 1.5-2x cheaper than STM32F03x depending on quantity. --- End quote --- Oh sh*... I was looking at MHz column alone |O Well, then STM32F03x beats them on price and may very well beat them on performance. |
| wraper:
--- Quote from: Unixon on December 16, 2018, 04:39:59 pm --- --- Quote from: wraper on December 16, 2018, 04:36:05 pm ---They are 8 bit, so generally they are slower than STM32F03x for computations. EFM8BB3 is 1.5-2x cheaper than STM32F03x depending on quantity. --- End quote --- Oh sh*... I was looking at MHz column alone |O Well, then STM32F03x beats them on price and may very well beat them on performance. --- End quote --- Where it beats them in price? STM32F03x is more expensive. |
| Wimberleytech:
--- Quote from: Unixon on December 16, 2018, 04:34:49 pm --- --- Quote from: wraper on December 16, 2018, 04:19:00 pm ---What exactly is that audio? --- End quote --- Oh, I'm sorry, I wasn't clear on that. I need a tiny sound effect generator/player and I'm looking for a MCU+DAC+firmware type of solution. The sound quality is not a big question, from LPF filtered PWM to 8bit will probably be too harsh, but at least 12bit at 48kSPS is already OK. --- End quote --- http://keterex.com/pubs/kx1400br.pdf |
| Unixon:
--- Quote from: wraper on December 16, 2018, 05:05:17 pm ---Where it beats them in price? STM32F03x is more expensive. --- End quote --- At my local supplier, however, this strongly depends on which chip it is, price ratio could go both ways. STM32F031F4P6 is about $1-$1.5 in volume other chips range up to $2-3. EFM8BB31* well ... is about the same range in volume. For low quantities locals want like 5-10 times of volume price for top of the line chips. :rant: |
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