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C161RI Datasheet(PDF) 9 Page - Siemens Semiconductor Group |
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C161RI Datasheet(HTML) 9 Page - Siemens Semiconductor Group |
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9 / 317 page  Semiconductor Group 1-2 1998-05-01 Introduction C161RI 1.1 The Members of the 16-bit Microcontroller Family The microcontrollers of the Siemens 16-bit family have been designed to meet the high performance requirements of real-time embedded control applications. The architecture of this family has been optimized for high instruction throughput and minimum response time to external stimuli (interrupts). Intelligent peripheral subsystems have been integrated to reduce the need for CPU intervention to a minimum extent. This also minimizes the need for communication via the external bus interface. The high flexibility of this architecture allows to serve the diverse and varying needs of different application areas such as automotive, industrial control, or data communications. The core of the 16-bit family has been developed with a modular family concept in mind. All family members execute an efficient control-optimized instruction set (additional instructions for members of the second generation). This allows an easy and quick implementation of new family members with different internal memory sizes and technologies, different sets of on-chip peripherals and/or different numbers of IO pins. The XBUS concept opens a straight forward path for the integration of application specific peripheral modules in addition to the standard on-chip peripherals in order to build application specific derivatives. As programs for embedded control applications become larger, high level languages are favoured by programmers, because high level language programs are easier to write, to debug and to maintain. The 80C166-type microcontrollers were the first generation of the 16-bit controller family. These devices have established the C166 architecture. The C165-type and C167-type devices are members of the second generation of this family. This second generation is even more powerful due to additional instructions for HLL support, an increased address space, increased internal RAM and highly efficient management of various resources on the external bus. Enhanced derivatives of this second generation provide additional features like additional internal high-speed RAM, an integrated CAN-Module, an on-chip PLL, etc. Utilizing integration to design efficient systems may require the integration of application specific peripherals to boost system performance, while minimizing the part count. These efforts are supported by the so-called XBUS, defined for the Siemens 16-bit microcontrollers (second generation). This XBUS is an internal representation of the external bus interface that opens and simplifies the integration of peripherals by standardizing the required interface. One representative taking advantage of this technology is the integrated CAN module. The C165-type devices are reduced versions of the C167 which provide a smaller package and reduced power consumption at the expense of the A/D converter, the CAPCOM units and the PWM module. The C164-type devices and some of the C161-type devices are further enhanced by a flexible power management and form the third generation of the 16-bit controller family. This power management mechanism provides effective means to control the power that is consumed in a certain state of the controller and thus allows the minimization of the overall power consumption with respect to a given application. |
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