Houston, Tex. Texas Instruments Inc. has claimed the first fixed-point digital signal controllers (DSCs) that are entirely compatible in hardware and software with high-performance floating-point DSCs. The TMS320F282x series of DSCs combine the affordability of a fixed-point architecture with the faster software development inherent to floating-point devices.
Floating-point algorithms that previously required significant recoding for fixed-point operation can now be recompiled in minutes to run on the F282x devices, said TI. The DSCs bring savings in time-to-market and manufacturing costs, enabling developers to design energy-efficient, less expense industrial applications such as servo controllers, automotive radar, solar inverters and wind turbines.
Delivering fully compatible fixed- and floating-point options for high-end embedded control, the new fixed-point F282x DSCs build on TI's recently introduced TMS320F283x floating-point DSCs. The F282x controllers operate at up to150 megahertz; are 100 percent code-compatible with F283x devices and can be programmed using the same development tools. The F282x controllers are also completely pin-to-pin compatible with the F283x series. This means that for the first time, a developer can create a control system using floating-point operations for greater accuracy and rapid programming, then recompile the same source code to be used on a fixed-point device for cost efficiency without re-designing any hardware, said TI.
Applications that do not need the full performance of a floating-point controller can be prototyped and debugged using F283x DSCs, then manufactured using F282x DSCs to take advantage of fixed-point economy. The parallel fixed- and floating-point devices allow manufacturers to target both performance and cost-conscious market segments using the same software and hardware engineering.
In addition, all of the F282x and F283x DSCs are fully code-compatible with TI's earlier TMS320C28x DSCs, allowing manufacturers to easily upgrade older designs to TI's highest-performing controller families.
Development support for F282x fixed-point DSCs is available in the same tools used for F283x floating-point DSCs. TI offers its F28335 eZdsp starter kit, which comes complete with an F28335 DSC target board and TI's Code Composer Studio Integrated Development Environment.
Pricing: All suggested resale pricing in quantities of 100,
- F28235 (150 MHz, 512 KB Flash, 68 KB RAM, 12-ch PWM (6 HRPPWM), 6/2 CAP/QEP, 3 SCI): $20.30
- F28234 (150 MHz, 256 KB Flash, 68 KB RAM, 12-ch PWM (6 HRPPWM), 6/2 CAP/QEP, 3 SCI): $18.00
- F28235 (100 MHz, 128 KB Flash, 52 KB RAM, 12-ch PWM (4 HRPPWM), 4/2 CAP/QEP, 2 SCI): $14.10
Availability: TMS320F28235 DSCs are now sampling in limited quantities. Volume production is scheduled for all F282x fixed-point and F283x floating-point DSCs in the second quarter of 2008.
Product information: F282x devices and TMS320F28235
Texas Instruments , www.ti.com