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Fundamental Structure
2
Fundamental Structure
The SAB 80(C)515/80(C)535 is a totally 8051-compatible microcontroller while its peripheral
performance has been increased significantly.
Some of the various peripherals have been added to support the 8-bit core in case of stringent
embedded control requirements without loosing compatibility to the 8051 architecture.
Furthermore, the SAB 80(C)515/80(C)535 contains e. g. an additional 8-bit A/D converter, two
times as much ROM and RAM as the 80(C)51 and an additional timer with compare/capture/reload
facilities for all kinds of digital signal processing.
Figure 2.1 shows a block diagram of the SAB 80(C)515/80(C)535.
The SAB 80C515/80C535 combines the powerful architecture of the industry standard controller
SAB 80515/80535 with the advantages of the ACMOS technology (e. g. power-saving modes). The
differences between MYMOS and ACMOS components are explained in section 2.1.
Readers who are familiar with the SAB 8051 may concentrate on chapters 2.1, 6, 7 and 8 where
the differences between MYMOS and ACMOS components, the reset conditions, the peripherals
and the interrupt system are described.
For newcomers to the 8051 family of microcontrollers, the following section gives a general view of
the basic characteristics of the SAB 80515/80535. The details of operation are described later in
chapters 3 and 4.
*
Semiconductor Group
10
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