DQ8051XP

DQ8051XP – Ultra High Performance 8051 Soft Core CPU

The DQ8051XP is an ultra-high performance, speed-optimized 8-bit 8051 soft core, delivering a dramatic leap forward over classic 8051 microcontrollers. Designed for modern SoC architectures, it efficiently operates with both fast on-chip memories and slower off-chip memories, making it ideal for embedded, industrial, and low-power connected devices.

Performance Without Compromise

• Up to 29× Faster Than the Original 80C51
  The DQ8051XP achieves 26.67–29.01× higher Dhrystone 2.1 performance at the same clock frequency, positioning it among the fastest 8051-compatible CPUs available worldwide.

• Exceptional Performance-to-Power Ratio
  Thanks to an advanced Power Management Unit (PMU), the core can be clocked over 10× slower than a traditional 8051 with no performance loss, enabling ultra-low-power operation.

100% 8051 Binary Compatibility

The DQ8051XP is fully binary-compatible with industry-standard 8051 microcontrollers, allowing seamless reuse of existing software while unlocking a new level of speed, efficiency, and flexibility—a true brave new world for legacy 8051 designs.

Advanced Debugging with DoCD™

Each DQ8051XP core integrates DCD’s DoCD™ Hardware Debug System, a powerful, real-time, non-intrusive debugger for complete SoC visibility:

• Halt, run, step into, or skip instructions in real time

• Read/write all registers, SFRs, and internal/external memories

• Debug user-defined peripherals

• Supports Keil µVision and standalone DoCD debug software

• JTAG-based, configurable on-chip debug interface

Unlike traditional debuggers, DoCD™ enables full system debugging without disturbing application execution.

Fully Configurable & SoC-Ready

• Exact-fit customization to project requirements

• No cost for unused features or wasted silicon

• Optimized for single-chip SoC designs

• Efficient operation with mixed memory architectures

Verification-Ready Delivery

The DQ8051XP is delivered with a fully automated test bench and a complete regression test suite, ensuring fast, reliable validation at every stage of the SoC design and verification flow.

Ideal Applications

• Low-power and battery-powered embedded systems

• Industrial controllers and automation

• IoT and connected devices

• Legacy 8051 system upgrades requiring higher performance

DQ8051XP redefines what an 8051 CPU can deliver—world-class performance, ultra-low power operation, full compatibility, and professional-grade debugging, all in a configurable, silicon-efficient IP core designed for modern SoCs.

DCD-SEMI 8051 / 80251 CPU IP Core Comparison

Quick Selection Guide

ALL DCD’S IP CORES ARE TECHNOLOGY AGNOSTIC, ENSURING 100% COMPATIBILITY WITH ALL FPGA AND ASIC VENDORS.

For further details, email info@dcd-semi.com

• Software in 100% compatible with 8051 industry standard
• Quad-Pipelined architecture enables to run 29.01 times faster , than the original 80C51 at the same frequency
• Up to 27.297 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 – IDM
• Up to 64k bytes of Program Memory
• Up to 16 MB of external (off-chip) Data Memory – XDM
• Synchronous interface, for up to 64K bytes of (on-chip) fast external Data Memory – (SXDM)
• 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 memory connection
• Interface for additional Special Function Registers
• Fully synthesizable
• Static synchronous design
• No internal tri-states
• Scan test ready
• USB, Ethernet, I2C, SPI, UART, CAN, LIN, HDLC, Smart Card interfaces available