DR8051
High Performance
8-bit Microcontroller
ver 3.10
O V E R V I E W
C P U F E A T U R E S
DR8051 is a high performance, area op-
timized soft core of a single-chip 8-bit embed-
ded controller dedicated for operation with fast
(typically on-chip) and slow (off-chip) memo-
ries. The core has been designed with a spe-
cial concern about low power consumption.
Additionally an advanced power management
unit makes DR8051 core perfect for portable
equipment where low power consumption is
mandatory.
● 100% software compatible with industry
standard 8051
● RISC architecture enables to execute in-
structions 6.7 times faster compared to
standard 8051
● 12 times faster multiplication
● 9.6 times faster division
● Up to 256 bytes of internal (on-chip) Data
Memory
DR8051 soft core is 100% binary-
compatible with the industry standard 8051 8-
bit microcontroller. There are two configura-
tions of DR8051: Harward where external data
and program buses are separated, and von
Neumann with common program and external
data bus. DR8051 has RISC architecture 6.7
times faster compared to standard architec-
ture and executes 65-200 million instructions
per second. This performance can also be ex-
ploited to great advantage in low power appli-
cations where the core can be clocked up to
seven times more slowly than the original im-
plementation for no performance penalty.
DR8051 is delivered with fully automated
testbench and complete set of tests allowing
easy package validation at each stage of SoC
design flow.
● Up to 64K bytes of 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
● User programmable External Data Memory
Wait States solution for wide range of
memories speed
● De-multiplexed Address/Data bus to allow
easy connection to memory
● Interface for additional Special Function
Registers
● Fully synthesizable, static synchronous de-
sign with positive edge clocking and no in-
ternal tri-states
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