Fastest 8051 CPU in IP form runs 75x original

May 08, 2015 // By Graham Prophet
DQ80251 from Polish IP vendor Digital Core Design now runs more than 75 times faster than the original 8051 chip, claimed as the highest performance MCS51 instruction set compatible IP Core currently available.

This fully configurable 80251 Microcontroller Core executes the MCS-51 and MCS-251 instruction sets and is delivered with a variety of integrated peripherals such as USB, Ethernet, I²C, SPI, UART, CAN, LIN, HDLC and Smart Card.

Digital Core Design launched its first version of the DQ80251 in 2011, offering performance 66 times faster than the original 8051 chip; this version uprates that to execute MCS-51 and MCS-251 instruction sets 75.08 times faster than the original chip. The DQ80251 boasts a Dhrystone 2.1 performance rating of 0.70579 DMIPS/MHz, which therefore enables a 75.08 times speed-up over the original 80C51 chip operating at the same frequency. The DQ8051’s dynamic power consumption is also very low. The same, it rivals not only all other 8051-compatible cores but also low-power 32-bit processors.

The DQ80251 is a royalty-free, cost-effective 8051 IP Core with ultimate code density and instruction intelligence. DCD enhanced the core’s functionality by implementing a variety of integrated peripherals, and to enable more complex SoCs design, the DQ80251 is equipped with built-in on-chip debugger (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, read/write any contents of the microcontroller, including all registers, internal and external program memories and all SFRs, including user defined peripherals. DCD says that 8051 CPUs can take a place in high-demand products, thanks to plenty of horsepower and many advantages such as low costs, energy and area, also, the DQ80251 is easy to integrate and program.


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