The 8xC51RA/RB/RC provide additional 256 Bytes of random access memory (RAM) space and hardware Watch Dog Timer for increased data parameter handling, high level languages usage and system reliability. They are code and pin compatible with existing MCS® 51 microcontrollers and therefore allow easy upgrade paths to all MCS 51 microcontroller applications. The 8xC51RA/RB/RC bring you all the benefits you would expect from the original innovator of the MCS 51 microcontroller family.
The Intel 8xC51RA/RB/RC belong to the Expanded RAM microcontroller series based on the MCS 51 microcontroller architecture. The 8xC51RA/RB/RC are code and pin compatible with the existing MCS 51 microcontrollers and therefore are direct `drop-in' replacements to existing MCS 51 microcontroller applications.
These products are functionally compatible with the Intel 8xC52/54/58, except for the additional 256 Bytes of on-chip data RAM and hardware WDT. The microcontrollers are specially designed to accomodate increased data parameter handling and usage of high level languages. The hardware WDT allows for increased system reliability. System development tools support are available from Intel third party tools vendors.
Key Features
MCS® 51 Microcontroller Compatible Instruction Set
Available in 44Ld PLCC, with future offerings of 40Ld P-Dip and 44Ld QFP
PB free package
Features & Benefits
Features
Benefits
Expanded internal RAM (512 byte) size
Synergy. More working space on chip, breaks the 256-byte limitation
Dedicated hardware watchdog timer (WDT)
Control. Improved system integrity control
Functionally compatible MCS® 51 microcontrollers
Compatibility. Easy migration of existing designs
On-Chip peripherals (timer/counter, serial ports, I/O ports, etc.)
High Integration. Enables low-cost and low-chip-count designs
Support Tools
Intel provides hardware and software development tools to support the development of applications based on the 8xC51RA/RB/RC. Tools include in-circuit emulators, assemblers, compilers and programmers.
Applications Information
The 8xC51RA/RB/RC microcontrollers will make ideal performance upgrade paths for all existing MCS 51 microcontroller applications. The 512 Byte on-chip data RAM available on the 8xC51RA/RB/RC make them suited for applications requiring increased data parameter handling functions and high level languages usage such as CD-ROM drives, scanners, intelligent security systems, wired handsets, analog linecards and etc.
80C51RA - ROMless + 512B RAM + WDT
