DZ80
8-bit Microprocessor
ver 1.00
OVERVIEW
Document contains brief description of DZ80
core functionality. The DZ80 is an advanced 8-
bit microprocessor with 208 bits of user acces-
sible registers, composed of six general pur-
pose registers, able to be used individually as
either 8-bit registers, or as 16-bit register pairs.
Additionally to those registers, DZ80 supports
two sets of accumulator and flag registers.
The DZ80 contains also Stack Pointer, program
Counter, two index registers, a REFRESH reg-
ister, and an INTERRUPT register. All output
signals are fully decoded and timed to control
standard memory or peripheral circuits. The
DZ80 is supported by a wide range of peripher-
als family.
DZ80 is
fully customizable,
which means it is
delivered in the exact configuration to meet
users requirements.
There is no need to pay
extra for not used features and wasted silicon.
It
includes
fully automated testbench
with
complete set of tests
allowing easy package
validation at each stage of SoC design flow.
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CPU FEATURES
Fully compatible with industry standard Z80
Fully synthesizable, static synchronous de-
sign with no internal tri-states
No internal reset generator or gated clock
Scan test ready
Technology independent HDL source code
Core can be fully customized
DESIGN FEATURES
♦
♦
♦
♦
O
NE GLOBAL SYSTEM CLOCK
S
YNCHRONOUS RESET
A
LL ASYNCHRONOUS INPUT SIGNALS ARE
SYNCHRONIZED BEFORE INTERNAL USE
A
LL LATHES IMPLEMENTED IN ORIGINAL
Z80
M
ICROCONTROLLER ARE REPLACED BY
EQUIVALENT
F
LI
-F
LOPS
.
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are trademarks of their respective owners.
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Copyright 1999-2006 DCD – Digital Core Design. All Rights Reserved.
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