DR80390XP
High Performance Configurable
8-bit Microcontroller
ver 3.10
OVERVIEW
DR80390XP is a
high performance, area
optimized
soft core of a single-chip 8-bit em-
bedded controller dedicated for operation with
fast
(typically on-chip) and
slow
(off-chip)
memories.
The core has been designed with a
special concern about
low power consump-
tion.
Additionally an advanced power man-
agement unit makes DR80390XP core
perfect
for portable equipment
where low power
consumption is mandatory.
DR80390XP soft core is 100% binary-
compatible with the industry standard 80C390
8-bit microcontroller. There are two configura-
tions of DR80390XP:
Harward
where external
data and program buses are separated, and
von Neumann
with common program and ex-
ternal data bus. DR80390XP has RISC archi-
tecture
6.7 times faster
compared to standard
architecture and executes
65-200 million in-
structions
per second. This performance can
also be exploited to great advantage in
low
power
applications where the core can be
clocked up to seven times more slowly than
the original implementation for no performance
penalty.
DR80390XP 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
All trademarks mentioned in this document
are trademarks of their respective owners.
with
complete set of tests
allowing easy
package validation at each stage of SoC de-
sign flow.
CPU KEY FEATURES
●
100% software compatible with industry
standard 80390
○
LARGE mode – 8051 instruction set
○
FLAT mode – 80390 instruction set
●
RISC architecture enables to execute in-
structions 6.7 times faster compared to
standard 8051
●
12 times faster multiplication
●
9.6 times faster division
●
2 Data Pointers (DPTR) for faster memory
blocks copying
○
Advanced INC & DEC modes
○
Auto-switch of current DPTR
●
Up to 256 bytes of internal (on-chip) Data
Memory
●
Up to 16M bytes of contiguous Program
Memory
●
Up to 16M bytes of external (off-chip) Data
Memory
●
User programmable Program Memory Wait
States solution for wide range of memories
speed
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