Zilog EZ80F916 - Manual (Page 10)

eZ80
®
CPU
User Manual
UM007715-0415 Introduction
1
Introduction
Zilog’s eZ80 ® CPU is a high-speed, 8-bit microcontroller capable of executing code four
times faster than a standard Z80 operating at the same clock speed. The increased
processing efficiency of the eZ80 CPU improves available bandwidth and decrease power
consumption. The eZ80 CPU’s 8-bit processing power rivals the performance of
competitors’ 16-bit microcontrollers.
The eZ80 CPU is also the first 8-bit microcontroller to support 16 MB linear addressing.
Each software module, or each task, under a real-time executive or operating system can
operate in Z80-compatible (64 KB) mode or full 24-bit (16 MB) address mode.
The eZ80 CPU’s instruction set is a superset of the instruction sets for the Z80 and Z180
CPUs. The Z80 and Z180 programs are executed on an eZ80 CPU with little or no modifi-
cation.
The eZ80 CPU is combined with peripherals, I/O devices, volatile and nonvolatile
memory, etc., for various eZ80 CPU products within the eZ80 and eZ80Acclaim!
®
product lines. Refer to the eZ80 and eZ80Acclaim! ®
product specifications
for more
information on these products. 1
1. The term eZ80
®
CPU is referred to as CPU in this document.