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| Microchip Announces dsPIC33 Digital Signal Controller Family w/ 27
CHANDLER, Ariz. — Microchip Technology Inc. announced the dsPIC33 family of
digital signal controllers (DSCs) for embedded designers who need high levels of performance, memory and I/O without
the complexity of traditional digital signal processors (DSPs). The dsPIC33 family operates at 40 MIPS, with family
members ranging from 64 to 256 Kbytes of self-programming Flash, 8 to 30 Kbytes of RAM and 64- to 100-pin packages.
The dsPIC33 features an 8-channel DMA and some versions have two 1.1 Msps A/D converters. Additionally, the new
dsPIC33 family has the same instruction set as the dsPIC30 family and uses the same universal MPLAB® development
tools that are common to all of Microchip’s controller families.
Engineers wishing to employ advanced algorithms
in a control environment find that 16-bit DSPs don’t have the determinism or the ability to sustain performance
required for typical interrupt-intensive embedded-control applications. The dsPIC33 provides DSP levels of
performance and large amounts of memory in a microcontroller-centric architecture that is ideal for embedded
control. To provide further cost effectiveness and ease of design, the dsPIC33 is fully compatible with Microchip’s
universal MPLAB Integrated Development Environment (IDE), and tools like the MPLAB C30 C compiler.
“The dsPIC33 architecture provides a cost-effective solution for applications requiring large memory, I/O or
substantial performance at 3.3 volts,” said Sumit Mitra, vice president of Microchip’s Digital Signal Controller
Division. “The addition of 27 new dsPIC33 Flash-based DSCs to the 21 existing dsPIC30 DSCs signals our commitment to
"With their dsPIC® DSCs and PIC24 MCUs, Microchip is the only company on the planet
with truly unified DSP and MCU product lines," said Will Strauss, president of Forward Concepts. "The dsPIC33 family
gives MCU people an easy migration path to DSP performance."
Initially, two dsPIC33 product lines
are being brought to market, with the following key features in common:
• 40 MIPS deterministic
• Serial I/O subsystems, including up to two each: SPI™, I2C™, UART and CAN
• 64 to 256 Kbytes Flash
• 8 to 30 Kbytes RAM
• 64- to 100-Pin
• 3.3V operation
Applications for the general-purpose DSCs include: two-way radios,
hands-free kits, answering machines, speech and audio playback applications, power-line modems, security systems and
portable medical monitoring equipment.
Fifteen dsPIC33 general-purpose devices are being
announced at this time. Key features that are specific to this family include:
• One or two 500
ksps, 12-bit A/D converters
• Codec interface
dsPIC33 Motor-Control and
Applications for these DSCs include: sewing machines, LED lighting arrays,
washing machines, access control, online UPS, environmental control, electronically assisted power steering,
precision manufacturing equipment, absolute encoders and resolvers, inverters and electric vehicles.
Twelve dsPIC33 motor-control and power-conversion devices are being announced at this time. The key features
of this family include:
• One or two 1.1 Msps 10-bit A/D converters with up to 8 sample and holds
for simultaneous sampling
• Specialized PWM for Motor-Control, Lighting and Power-Conversion
• Quadrature Encoder Interface
Microchip coined the Digital
Signal Controller (DSC) term with the introduction of the dsPIC30 DSC family. The dsPIC30 DSC family is in
widespread use, and new members continue to be added.
between the dsPIC30 and dsPIC33 families is quite straightforward, since they both have the same instruction set and
compatible pin-outs,” added Mitra. “The dsPIC33 family is especially attractive, both from a price and feature
standpoint, for applications requiring larger Flash and RAM, where extra I/O is important, or where 3.3V is the
preferred chip voltage.”
Development Support and Availability
Within the MPLAB
IDE, high-level resources are added in a microcontroller-friendly way to allow the utilization of DSC features with
minimal effort. These features include Microchip’s Visual Device Initializer, which can generate initialization code
in a few clicks, and the Motor Control GUI, which can be used to quickly tune dsPIC® DSC motor control libraries to
a specific motor type. Sophisticated libraries have been developed that fully exploit the dsPIC DSC’s capabilities
while presenting a user-friendly environment for engineers. Many libraries are free, while others can be licensed
for a low one-time fee. One area gaining popularity is the use of digital filters. The low-cost Digital Filter
Designer and the free dsPICworks™ software can help users define filters to their specifications, simulate
performance and generate code, all without immersion in DSP theory.
Selected members of the
dsPIC33 family are available today for early-adopter sampling. General sampling is expected to start in calendar Q1
2006, and production availability is expected to be staged beginning in calendar Q2 2006.
Martes, 18 Octubre, 2005 - 05:21