Why we can't use AHB in the Cortex M0 MCU?

Question

I found coretex M0 MCU module's bus interface has not HBUSREQ and HGRANT, and HRESP when i trying to implement with AHB Bus.

Is there any way to use AHB not AHB_lite. I can't use multi-layer interconnect system. only I can use AHB.

You question is not clear without the context. Why can't you simply add those signals? — Dmitry Grigoryev, May 31 '16 at 13:35

score 2 · Answer 1 · answered May 31 '16 at 19:33

Which interconnect are you using? You should find that a multi-layer AHB can be driven from AHB-Lite, either with some tie-offs, or using a bridge.
As to why, it is to avoid having extra logic in the core which isn't needed for the majority of use-cases. Adding the logic to support arbitration is no less efficient when it is external.

Why we can't use AHB in the Cortex M0 MCU?

1 Answers1