lf2407 pdf

The TMS320LF240x and TMS320LC240x devices, new members of the ’24x family of digital signal processor
(DSP) controllers, are part of the C2000 platform of fixed-point DSPs. The ’240x devices offer the enhanced
TMS320 architectural design of the ’C2xx core CPU for low-cost, low-power, high-performance processing
capabilities. Several advanced peripherals, optimized for digital motor and motion control applications, have
been integrated to provide a true single chip DSP controller. While code-compatible with the existing ’24x DSP
controller devices, the ’240x offers increased processing performance (30 MIPS) and a higher level of peripheral
integration. See the TMS320x240x device summary section for device-specific features.
The ’240x family offers an array of memory sizes and different peripherals tailored to meet the specific
price/performance points required by various applications. Flash-based devices of up to 32K words offer a
reprogrammable solution useful for:
– Applications requiring field programmability upgrades
– Development and initial prototyping of applications that migrate to ROM-based devices
Flash devices and corresponding ROM devices are fully pin-to-pin compatible. Note that flash-based devices
contain a 256-word boot ROM to facilitate in-circuit programming.
All ’240x devices offer at least one event manager module which has been optimized for digital motor control
and power conversion applications. Capabilities of this module include centered- and/or edge-aligned PWM
generation, programmable deadband to prevent shoot-through faults, and synchronized analog-to-digital
conversion. Devices with dual event managers enable multiple motor and/or converter control with a single
’240x DSP controller.
The high performance, 10-bit analog-to-digital converter (ADC) has a minimum conversion time of 500 ns and
offers up to 16 channels of analog input. The auto sequencing capability of the ADC allows a maximum of
16 conversions to take place in a single conversion session without any CPU overhead.
A serial communications interface (SCI) is integrated on all devices to provide asynchronous communication
to other devices in the system. For systems requiring additional communication interfaces; the ’2407, ’2406,
and ’2404 offer a 16-bit synchronous serial peripheral interface (SPI). The ’2407 and ’2406 offer a controller area
network (CAN) communications module that meets 2.0B specifications. To maximize device flexibility,
functional pins are also configurable as general purpose inputs/outputs (GPIO).
To streamline development time, JTAG-compliant scan-based emulation has been integrated into all devices.
This provides non-intrusive real-time capabilities required to debug digital control systems. A complete suite
of code generation tools from C compilers to the industry-standard Code Composer debugger supports this
family. Numerous third party developers not only offer device-level development tools, but also system-level
design and development support.