alt Hacker NewsThe RP2350 is Raspberry Pi’s dual-core microcontroller: each processor socket can select either an Arm Cortex-M33 or a RISC-V Hazard3 core at boot.
Does that mean there are four cores on the die? Is there crazy amounts of MUXing going on? Does the extra, semi-unused area give the chip a premium price tag? Or did I misinterpret this?
Replies
raphlinus • today at 6:43 AM
Yes, four cores in the chip. And yes, there's additional muxing, but I think that adds a fairly small amount of chip area compared with the crossbar. In addition to the two core slots, there are a lot of peripherals contending for single cycle bus access.
> a premium price tag?
$0.80 in bulk. Around $1.25 for individual quantities, depending on who your reseller is.
AIUI, the CPU cores are a small fraction of the die area compared to all the peripherals on the chip.