DSC family gets Flash upgrade

6 February 2008 DSP, Micros & Memory

Microchip has announced an expansion of its low pin-count 16-bit digital signal controller (DSC) portfolio with the addition of three dsPIC33F general-purpose family members and three dsPIC33F motor control/power conversion family DSCs, which offer increased memory options for a range of applications including smart sensor processing, advanced motor control, lighting and power inverters.

The new general-purpose DSCs feature 16 or 32 KBytes of Flash memory with 28- or 44-pin packages and provide a pin- and code-compatible migration path for PIC24 microcontrollers. The devices also feature an on-chip analog-to-digital-converter (ADC), with up to 1,1 MSps, and serial interfaces such as I²C, SPI and UART.

The three dsPIC33F motor control family DSCs add a motor-control PWM with two independent clock sources for advanced motor control or inverter algorithms - as well as active power factor correction - using a single DSC. This on-chip PWM peripheral is also designed for power-conversion and lighting applications. They also include a quadrature encoder interface for sensor-based motor applications. These devices provide an excellent platform for advanced motor control algorithms, such as field-oriented control.

Both the general-purpose and motor control DSCs also feature Peripheral Pin Select, which allows designers to remap digital I/O to optimise board layout.

Microchip also offers applications libraries that can be downloaded for free for evaluation and development. For production, libraries are either free or low cost, and without royalties. Library downloads include speech processing, noise reduction, motor control, advanced security, connectivity, file management, and common math and DSP routines.

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