SAB80C537-N16 datasheet(9/323 Pages) SIEMENS

Part #	SAB80C537-N16

Description	8-Bit CMOS Single-Chip Microcontroller

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Manufacturer	SIEMENS [Siemens Semiconductor Group]

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Semiconductor Group

10

Fundamental Structure

2

Fundamental Structure

The SAB 80C517 is a totally 8051-compatible microcontroller while its peripheral performance has

been increased significantly. lt includes the complete SAB 80(C)515, providing 100% upward

compatibility. This means that all existing 80515 programs or user’s program libraries can be used

further on without restriction and may be easily extended to the new SAB 80C517.

The SAB 80C517 is in the Siemens line of highly integrated microcontrollers for control applications.

Some of the various on-chip peripherals have been added to support the 8-bit core in case of

stringent real-time requirements. The 32-bit/16-bit arithmetic unit, the improved 4-level interrupt

structure and the increased number of eight 16-bit datapointers are meant to give such a CPU

support. But strict compatibility to the 8051 architecture is a principle of the SAB 80C517’s design.

Furthermore, the SAB 80C517 contains three additional 8-bit I/O ports and twelve general input

lines. The additional serial channel is compatible to an 8051-UART and provided with an

independent and freely programmable baud rate generator. An 8-bit resolution A/D-converter with

software-adjustable reference voltages has been integrated to allow analog signal processing. As

a counterpart to the A/D converter, the SAB 80C517 includes a powerful compare/capture unit with

two 16-bit timers for all kinds of digital signal processing. The controller has been completed with

well considered provisions for "fail-safe" reaction in critical applications and offers all CMOS

features like low power consumption as well as an idle, power-down and slow-down mode.

Figure 2-1 shows a block diagram of the SAB 80C517.

Readers who are familiar with the SAB 8051 or SAB 80515 may concentrate on chapters 6 and 7

where the reset conditions and the new peripheral components are described. Chapter 8 (Interrupt

System) has a special section for 80515 professionals where enhancements of the interrupt

structure compared to the SAB 80515 are summarized.

For readers, however, who are newcomers to the 8051 family of microcontrollers, the following

section may give a general view of the basic characteristics of the SAB 80C517.

The details of operation are described later in chapters 3 and 4.

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