The eZ80 also supports direct continuous addressing of 16 MB of memory without a memory management unit, by extending most registers (HL, BC, DE, IX, IY, SP, and PC) from 16 to 24 bits.

[2] The processor has a 24-bit ALU arithmetic logic unit and overlapped processing of several instructions (the three-stage pipeline) which are the two primary reasons for its speed.

Instead, it is intended to work with fast SRAM directly as main memory (as this had become much cheaper).

Nor does it have the multiplexed bus of the Z280, making it as easy to work with (interface to) as the original Z80 and Z180, and equally predictable when it comes to exact execution times.

These single-chip computers retain an external address and data bus so they can function as general-purpose microprocessors despite their focus on specific applications.