4 ms·
You're correct, you can access the 128MBit SPI Flash as any other read-only memory mapped memory -- you can execute out of it or load data (you can also write
by mwachs5 10y ago
You're correct, you can access the 128MBit SPI Flash as any other read-only memory mapped memory -- you can execute out of it or load data (you can also write to it but need to use a seperate channel, it's not directly memory mapped to write).
You're also correct on the sizes of the ICache and Scratchpad. You can execute code which resides in the scratchpad, but can't store data in the I-Cache.
- cmrdporcupine 10y agoDoes the MCU expose address lines to wire in external RAM?
- Sanddancer 10y agoNo. The only external addressing is through QSPI0, and that only has one chip select line hooked to it. They do make small amounts -- 512k -- of SPI RAM, but that on its own would make the chip boot process interesting.