R80251XC

Ultra fast, configurable 32-bit 8051 IP core microcontroller

Overview

The R80251XC is a fast, configurable, single-chip 32-bit microcontroller IP core compatible to the MCS® 251 and MCS® 51 instruction set.

This highly efficient design runs an average of 3.18 times faster than the 80C251 at the same clock frequency. The Dhrystone benchmark score varies from 0.098 to 0.23 DMIPS/MHz, depending on working mode, which translates to speed improvement of 24.5 over the standard 80C51 and of 2.22 over the 80C251 at the same frequency.

A rich set of optional features and peripherals enables designers to closely match the core with their specific application and hardware requirements (FPGA, ASIC, or structured ASIC). These options include interrupts, interfaces for serial communication (UART, I2C and SPI), timers, I/O ports, power management unit, watchdog timer and real-time clock. Integrated on-chip debugging using the native OCDS and the EASE-8051 debugging system is also available.

Highlights

Ultra high performance 8051 compatible 32-bit microcontroller IP core
External Memory Interface that addresses up to 16 MB of Program and Data Memory
Power Management Unit with power-down modes (IDLE/STOP)
Native On-Chip Debug Support (OCDS) interface

Benefits

The highest performing 8051-compatible microcontroller IP on the market
Extensive configurability options
Alternate port functions are separated, providing extra port pins
KEIL™-compatible, complete application debugging environment

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Datasheet

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Configurability

Number of 8-bit I/O ports
Number of 16-bit timers
Programmable Counter Array implementation
Number or serial ports
Implementation of Watchdog timer
Number of I2C master-slave interfaces
SPI master-slave interface support
On-chip Debug Support (OCDS)
Number of hardware breakpoints: 2 to 8 (for OCDS)
Program trace (for OCDS)
Data & program trace (for OCDS)
Software Reset
Real Time Clock

Applications

32-bit data processing applications
High speed control systems
Mixed-signal SoC control