Specifications

TMS320C240x Series of DSP Controllers
1-4
of advanced control algorithms for techniques such as adaptive control,
Kalman filtering, and state control. The ’240x DSP controllers offer reliability
and programmability. Analog control systems, on the other hand, are hard-
wired solutions and can experience performance degradation due to aging,
component tolerance, and drift.
The high-speed central processing unit (CPU) allows the digital designer to
process algorithms in real time rather than approximate results with look-up
tables. The instruction set of these DSP controllers, which incorporates both
signal processing instructions and general-purpose control functions, coupled
with the extensive development support available for the ’240x devices,
reduces development time and provides the same ease of use as traditional
8- and 16-bit microcontrollers. The instruction set also allows you to retain your
software investment when moving from other general-purpose TMS320 fixed-
point DSPs. It is source- and object-code compatible with the other members
of the ’24x generation, source-code compatible with the ’C2x generation, and
upwardly source-code compatible with the ’C5x generation of DSPs from
Texas Instruments.
The ’240x architecture is also well-suited for processing control signals. It uses
a 16-bit word length along with 32-bit registers for storing intermediate results,
and has two hardware shifters available to scale numbers independently of the
CPU. This combination minimizes quantization and truncation errors, and in-
creases processing power for additional functions. Such functions might in-
clude a notch filter that could cancel mechanical resonances in a system or an
estimation technique that could eliminate state sensors in a system.
The ’240x DSP controllers take advantage of an existing set of peripheral func-
tions that allow Texas Instruments to quickly configure various series mem-
bers for different price/performance points or for application optimization. This
library of both digital- and mixed-signal peripherals includes:
- Timers
- Serial communications ports (SCI, SPI)
- Analog-to-digital converters (ADC)
- Event manager
- Safety features such as watchdog timer and power drive protection
The DSP controller peripheral library is continually growing and changing to
suit the needs of tomorrow’s embedded control marketplace.