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SAB80C537-N16 Datasheet(PDF) 9 Page - Siemens Semiconductor Group |
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SAB80C537-N16 Datasheet(HTML) 9 Page - Siemens Semiconductor Group |
9 / 323 page 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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