Release Enhancements

The section in which the entry point of a C program is defined cannot be marked as a conditionally linked section. The compiler marks all function veneers as conditionally linked.

You must link with the ±a linker option, which creates an absolute, execut- able output module, to enable conditional linking. The ±j linker option disables conditional linking.

For information on the .clink directive, see the Assembler Directives chapter of the TMS470R1x Assembly Language Tools User's Guide; for information on the ±j linker option, see the Linker Description chapter.

C compiler enhancements

The TMS470R1x optimizing C compiler enhancements are as follows. For more information, see the named chapter of the TMS470R1x Optimizing C Compiler User's Guide.

-You can specify command line options in a file. When you specify that file on the command line with the ±@ shell option, the compiler reads the file and interprets it as if it contained part of the command line. For more information, see the Compiler Description chapter.

-The options that invoke the interlist utility with the shell have changed. The ±s option interlists optimizer comments (if the optimizer is invoked) and assembly statements; otherwise it interlists C source and assembly state- ments. The ±ss option interlists C source and assembly statements. A new option, the ±os option, interlists optimizer comments with assembly state- ments. To interlist C source and assembly statements with optimizer comments, use the ±os and ±ss options when invoking the optimizer. For more information, see the Compiler Description and Optimizing Your Code chapters.

-Global register variables are now supported. For more information, see the TMS470R1x C Language chapter.

-Bit-field manipulation improvements are incorporated. For more informa- tion, see the Runtime Environment chapter.

-The alignment of structures has changed. In previous releases, all struc- tures were word aligned. Now, a structure is aligned according to the align- ment of the structure's most restrictive element. For more information, see the Runtime Environment chapter.

-Software interrupts are supported for C code. You define the software interrupt with the SWI_ALIAS pragma. For more information, see the TMS470R1x C Language and Runtime Environment chapters.

Release Notes

6-5

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Texas Instruments TMS470R1x manual Compiler enhancements
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TMS470R1x specifications

The Texas Instruments TMS470R1x series is an advanced family of microcontrollers designed for automotive and industrial applications, renowned for their robust performance, flexibility, and reliable functionality. Built on a 32-bit RISC architecture, this series provides a powerful computing platform, tailored for embedded control systems.

One of the standout features of the TMS470R1x is its high-performance processing capabilities. Operating at clock speeds of up to 120 MHz, these microcontrollers can handle complex calculations and control algorithms efficiently. The TMS470R1x also incorporates a rich set of peripherals, including timers, pulse width modulation (PWM) modules, and communication interfaces like CAN, SPI, and UART. This versatility makes the series suitable for a wide range of applications, from automotive engine control units to industrial automation systems.

Incorporating advanced memory options, the TMS470R1x features Flash memory sizes ranging from 128 KB to 512 KB, along with RAM ranging from 20 KB to 64 KB. This ample memory is crucial for storing firmware and handling multiple data streams in real time. The microcontrollers also support in-system programming, allowing for easy updates and code modifications during the product lifecycle.

The TMS470R1x series is designed with safety in mind. It adheres to ISO 26262 standards, ensuring high levels of functional safety necessary for automotive systems. Features such as redundancy, error correction, and built-in safety mechanisms ensure operations remain reliable even in fault conditions.

Another important characteristic of the TMS470R1x is its low power consumption, making it ideal for battery-operated devices and equipment. The series employs various power management techniques, including low-power sleep modes, enabling manufacturers to optimize their systems without sacrificing performance.

The integrated Debug and Trace capabilities of the TMS470R1x facilitate effective development and troubleshooting. Engineers can debug their applications in real time, significantly reducing time-to-market and enhancing overall product quality.

In summary, the Texas Instruments TMS470R1x microcontroller series offers a powerful and versatile platform for complex automotive and industrial applications. With its high processing speed, extensive memory options, compliance with safety standards, low power consumption, and robust debugging capabilities, the TMS470R1x is a reliable choice for developers seeking to create innovative and efficient embedded systems. These features combine to position the TMS470R1x series as a leading choice in the expanding field of advanced microcontrollers.
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