TSC80251 TEMIC [TEMIC Semiconductors], TSC80251 Datasheet - Page 10

• Manufacturer Part Number: TSC80251
• Manufacturer: TEMIC [TEMIC Semiconductors]

TSC80251
Introduction
1.1. 8/16–bit microcontroller
In the world of 8/16–bit microcontrollers, the C51 Architecture has become an industry standard for embedded
applications. For over 15 years, T
has been a leading provider of this microcontroller family. This unsurpassed
EMIC
experience is the driving force as T
takes this proven family to the next level of performance: the TSC80251
EMIC
family!
This new C251 Architecture at its lowest performance level (binary mode), is binary code compatible with the 80C51
microcontrollers, hence, attaining an increase in performance has never been easier.
Due to a 3–stage pipeline, the CPU–performance is increased by a factor 5, using existing C51 code without
modifications.
Using the new C251 instruction set, which you will find in this document (See Chapter 5), the performance will increase
up to 15 times at the same clock rate. This performance enhancement is based on the 16–bit instruction bus, allowing
for more powerful instructions and additional internal instruction bus, 8–bit and 16–bit data busses.
The 24–bit address bus will allow to access up to 16 Mbytes in a single linear memory space. Please see each individual
TSC80251 Product Design Guide for the effective addressable memory range.
Programming flexibility and C–code efficiency are both increased through a Register–based Architecture, the
64–Kbyte extended stack space combining with the new instruction set.
C251 C–compilers are some of the most efficient available (nearly no overhead), coupled with the final codesize which
could be a factor of 3 down when compared with the C51 C–compilers.
All technical information in this document about core features are related to the core revision A and core revision D.
1.2. TSC80251 Derivatives
T
is developing a full family of application specific TSC80251 derivatives. Please see the Design Guide of each
EMIC
product for further information.
These products are designed to help you getting high–performance products to market faster.
Due to the high instruction throughput, the TSC80251 derivatives are focussing on all high–end 8–bit to 16–bit
applications.
TSC80251 derivatives are also used in mid–range and lower–end microcontroller applications, where a very low
operation frequency is needed, without decreasing the level of CPU–power.
This feature is ideal for today portable applications and EMC sensitive systems.
Rev. C – May 7, 1999
1.1