2 ms·
A few more interesting observations: It doesn't seem to have any on-chip flash. While this is a common scenario on application processors and FPGAs, this is un
by ohazi 6y ago
A few more interesting observations:
It doesn't seem to have any on-chip flash. While this is a common scenario on application processors and FPGAs, this is unusual on a modern microcontroller. It's not really a problem... XIP flash is cheap and ubiquitous... I'm just curious what the reasoning here was. Cost? Process restrictions? Silicon IP licensing issues? Not necessary if 99% of the chips are used on this RPi carrier board?
The (hard) boot rom is open source! I honestly can't remember the last time I saw this.
- guenthert 6y agoThe Parallax Propeller has an on-board boot ROM, but no E(E)PROM. Not much an issue for the intended audience (hobby and educational sector it seems), but the delay between reset and program start (while it is being loaded into internal RAM via I2C from external memory) would be for some hard real-time use cases. Something to be aware of.