DSP, Micros & Memory


First 80C51 to have linear address range expanded to 16 MB

9 May 2001 DSP, Micros & Memory

Philips Semiconductors has announced that it has broken the 64 KB barrier with the first 8-bit 80C51 to support up to 16 MB of on-chip linear addressable memory. The 87C51Mx2 microcontroller family is the first in a broad line of large on-chip memory microcontrollers based on the company's new 51MX core.

The 51MX combines a significant increase in on-chip program and data memory together with high-level C language performance enhancements. Full binary object code compatibility is maintained, allowing design engineers to re-use existing 80C51 program codes. The architecture also retains 80C51 bus compatibility to allow re-use of existing peripherals and application specific integrated circuits (ASICs).

"Philips Semiconductors' 51MX family represents the future for the 80C51 architecture," says Geoff Lees, Director of Marketing, Microcontroller Business Line, Philips Semiconductors. "The 51MX is a unique embedded memory solution that creates a roadmap to greater functionality and increased performance, eliminating the need for software paging and costly external code-banking hardware."

The 51MX is an accelerated 80C51 architecture that executes instructions at twice the rate of standard 80C51 devices. Its 23 bit linear address supports up to 16 MB of on-chip or off-chip program and data memory.

The program counter is extended to 23 bits, and the stack pointer to 16 bits. A new 23 bit extended data pointer, together with two 24 bit universal pointers using existing general purpose registers, creates a 16 MB linear address range optimised for C compilers.

The 87C51MC2 is now available with 96 KB of OTP (one-time programmable) memory and 3 KB of RAM and the 87C51MB2 with 64 KB of OTP and 2 KB of RAM. Both devices operate with supply voltages from 2,7 V to 5,5 V and run at up to 24 MHz (5 V) with a typical instruction cycle time of 250 ns. The 87C51Mx2 family includes an integrated PCA (programmable counter array), two full-duplex enhanced UARTS, an industry-standard serial peripheral interface and a configurable watchdog timer.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

RF agile transceiver
Altron Arrow Telecoms, Datacoms, Wireless, IoT
The AD9361 is a high performance, highly integrated RF Agile Transceiver designed for use in 3G and 4G base station applications.

Read more...
MCU for noisy environments
EBV Electrolink DSP, Micros & Memory
The MCX?E24X is a high-performance microcontroller family from NXP, engineered for industrial, automotive-like, and energy-focused environments.

Read more...
SmartRAID 4300 Series
Altron Arrow DSP, Micros & Memory
Microchip’s disaggregated architecture leverages host CPU and PCIe infrastructure to overcome traditional storage bottlenecks in scalable, secure NVMe RAID storage solutions.

Read more...
The evolution of 4D imaging radar
Altron Arrow Telecoms, Datacoms, Wireless, IoT
4D imaging radar is redefining automotive sensing with unmatched precision, scalability and resilience and, as global adoption accelerates, this technology is poised to become a cornerstone of autonomous mobility.

Read more...
High-performance SDR range
RFiber Solutions DSP, Micros & Memory
Epiq Solutions offers high-performance RF tuners and software-defined radios with various specifications for diverse applications in congested environments.

Read more...
Bluetooth wireless SoC
Altron Arrow Telecoms, Datacoms, Wireless, IoT
he EFR32BG29 wireless SoC from Silicon Labs is a highly efficient, high memory, low-power, and ultra compact SoC designed for secure and high-performance wireless networking for IoT devices.

Read more...
Wi-Fi 6 and Bluetooth LE co-processor
Altron Arrow Telecoms, Datacoms, Wireless, IoT
STMicroelectronics has released its ST67W611M1, a low-power Wi-Fi 6 and Bluetooth LE combo co-processor module.

Read more...
High performance SDR design considerations
RFiber Solutions Editor's Choice DSP, Micros & Memory
As the spectrum gets increasingly crowded, and adversaries more capable, the task of examining wide bands and making sense of it all, while not missing anything, gets harder.

Read more...
Direct RF converters and FPGAs boost EW applications
RFiber Solutions DSP, Micros & Memory
The latest boost to electronic warfare designs comes from emerging FPGA architectures that combine advanced RF converters and high-performance processing engines in a single package.

Read more...
Empowering innovation with ST’s AI processors
Altron Arrow AI & ML
Artificial intelligence is no longer just a futuristic concept – it is here, and it is transforming industries at an unprecedented pace.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved