DP8051 Performance Chart

0 3 6 9 12 15 18 21


The DP8051XP is an ultra-high performancespeed-optimized softcore, of a single-chip, 8-bit embedded controller, intended to operate with fast (typically on-chip) and slow (off-chip) memories. The core was designed with a special concern about the performance to power-consumption ratio. This ratio is extended by the PMU – an advanced power management unit.
The DP8051XP softcore is 100% binary-compatible with an industry-standard 8051 8-bit microcontroller. There are two configurations of the DP8051XP:

  • Harvard, where internal data and program buses are separated, and
  • von Neumann, with common program and external data bus

The DP8051XP has a Pipelined RISC architecture and executes 120-300 million instructions per second. Dhrystone 2.1 benchmark program runs from 11.46 to 15.55 times faster than the original 80C51 at the same frequency. The same C compiler was used for benchmarking of the core vs 80C51 with the same settings. This performance can be also exploited to great advantage in low-power applications, where the core can be clocked over ten times slower than the original implementation, without performance depletion. The DP8051XP is delivered with a fully automated test bench and a complete set of tests, allowing easy package validation at each stage of the SoC design flow. Each of DCD’s 8051 Cores has built-in support for a proprietary Hardware Debug System called DoCD™. It is a real-time hardware debugger, which provides debugging capability of a whole System-on-Chip (SoC). Unlike other on-chip debuggers, the DoCD™ provides non-intrusive debugging of a running application. It can halt, run, step into or skip an instruction, and read/write any contents of the microcontroller, including all registers, internal and external program memories, and all SFRs, including user-defined peripherals.


For further details, email info@dcd.pl.

Key features

  • Software in 100% compatible with 8051 industry standard
  • Pipelined RISC architecture enables to run 15.55 times faster, than the original 80C51 at the same frequency
  • Up to 14.632 VAX MIPS at 100 MHz
  • 24 times faster multiplication
  • 12 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 64 kB of internal (on-chip) or external (off-chip) Program Memory
  • Up to 8MB linear code space (in 80390 mode)
  • Up to 16 MB of external (off-chip) Data Memory
  • Synchronous eXternal Data Memory (SXDM) Interface
  • User programmable Program Memory Wait States
  • User programmable External Data Memory Wait States
  • De-multiplexed Address/Data bus – to allow easy memory connection
  • Interface for additional Special Function Registers
  • Fully synthesizable
  • Static synchronous design
  • Positive edge clocking and no internal tri-states
  • Scan test ready
  • USB, Ethernet, I2C, SPI, UART, CAN, LIN, HDLC, Smart Card interfaces available
Design Dhry speed on-chip CODE RAM/ROM off-chip CODE CODE write IDATA space XDATA space XDATA, CODE wait states DoCDTM PMU Interrupt sources DPTR Timers UART IO Ports Compare/
Watchdog MDU
DP80C51 11.46 64k/64k 64k 256 64k 5 1 2 1 4
DP8051XP 15.55 64k/64k 64k/8M 256 16M 15 2 3 2 4
DP8051 15.36 64k/64k 64k/8M 256 16M 5 1 2 1 4
DP8051CPU 15.36 64k/64k 64k/8M 256 16M 2 1 - - -
DQ8051XP 29.01 64k/64k 64k/8M 256 16M 15 2 3 2 4
DQ8051 29.01 64k/64k 64k/8M 256 16M 5 2 2 1 4
DQ8051CPU 28.40 64k/64k 64k/8M 256 16M 2 2 - - -
DT8051 8.11 64k/64k 64k 256 64k 11 1 2 1 1


DoCD Debugger

Power of Innovation is our primary target. That’s why our R&D focuses on every IP Core detail. As a result of that concern, some unique solutions were born. One of them is the on-Chip Debugger (DoCD™), which is a complete debugging system, dedicated for DCD's DQ80251/DQ8051/DT8051/DP8051x/DP80390x Microcontroller Cores.

Read more
DoCD Debugger

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