3 ms·
Can anyone comment as to why they'd go for a cortex M3? @120Mhz it seems like overkill for the function of this device. I know it's pretty cheap but it could ha
by maguirre 11y ago
Can anyone comment as to why they'd go for a cortex M3? @120Mhz it seems like overkill for the function of this device. I know it's pretty cheap but it could have made even cheaper with a less capable micro.
- jfoster 11y agoFirst batch might be a MVP.
- TickleSteve 11y agoThe setup process involves some audio processing which requires slightly more than trivial signal processing and also some RAM usage... Also handling the network stack requires some RAM. The combination of those two requirements and the low cost of the STM32s of that level of capability mean it was probably a sensible choice.
- zwieback 11y agoI'm surprised they went with F205, though. There are 32Lxxx chips with similar capabilities and lower power. The whole thing looks like a quick turn of a reference design and the real low-cost design will follow later on.
- TickleSteve 11y agoI would agree. It looks like a quick&safe design.... If it takes off, a cost-optimised version will appear.