This MCU started to interest me because it is a low price alternative with a lot of contents. ST’s price is 1.7 USD, but that is 3++ USD through Digikey in low volume. It is a 128Kb Flash version, but it has a promissing build-in Bootloader that I want to experiment with. If you build a CANopen bootloader you easely need 64Kb for the bootloader alone unless you want to spend a lot of time in size optimization. You can get a bootloader down to 8Kb, but the cost in time is usually to huge so I just use a MCU with more Flash. This one looks like I might keep 128K Flash to applications making it a very interesting low-cost option.
- 32 bit w/FPU at 250Mhz.
- M33 Core with lots of extras.
- 128Kb Flash, 32Kb SRAM.
- 1 x FD-CAN
- USB
- I2C, SPI, UART in 2-3 x.
- One decent Motor Timer.
And some extras that I basically don’t know what is yet.
I have ordered a Nucleo board and 10 chips as I want to consider this for several projects.