Overview
The TMS320VC33PGE120 is a fixed-point digital signal processor (DSP) from Texas Instruments (TI) , part of the TMS320C3x series . Based on a modified Harvard architecture , it features an efficient instruction pipeline and a hardware multiplier. Operating at 120MHz , it delivers up to 120 MIPS of processing performance.
The TMS320VC33PGE120, with its large internal memory and flexible peripheral interfaces, is particularly well-suited for real-time signal processing, industrial control, communications systems, medical imaging, and embedded digital filtering . Its low-power design and industrial-grade reliability make it an excellent choice for embedded applications requiring high computing performance and stability.
Core parameters
Parameter | Numerical |
Kernel architecture | TMS320C3x DSP core (fixed-point) |
Main frequency | 120MHz |
Computing performance | 120MIPS |
Memory | 34K × 32 bits of on-chip RAM |
External Memory Interface | Support SRAM, ROM, FLASH, DRAM |
DMA controller | Support 6-channel DMA |
Serial interface | Multichannel Buffered Serial Port (McBSP) |
Timer | Two 32-bit general-purpose timers |
Supply voltage | Core 1.8V, I/O 3.3V |
Power consumption | Low power consumption design, typical < 500mW |
Operating temperature range | –40°C to +100°C (industrial grade) |
Package | LQFP-144 (PGE package) |
Features
Efficient signal processing capabilities
The main frequency is 120MHz, and it supports single-cycle multiply-add (MAC) instructions, which is suitable for real-time filtering and FFT operations.
Flexible peripherals and interfaces
Built-in McBSP supports multi-channel audio, voice and communication data streams.
The DMA controller supports high-speed data movement and improves real-time processing capabilities.
Low power operation
Compared to the previous generation C30 series, the VC33 uses an improved process to reduce operating power consumption.
Large on-chip memory
34K × 32-bit RAM reduces external memory access latency and improves computing efficiency.
Industrial-grade reliability
The operating temperature range is from –40°C to +100°C, making it suitable for industrial and medical applications in harsh environments.
Typical application scenarios
Industrial control and automation
Motor control, servo system, PLC signal processing unit.
Communication System
Modem, baseband processing, radar signal processing.
Medical electronics
Medical imaging, ultrasound systems, and ECG signal analysis.
Audio and speech processing
Multi-channel audio acquisition and processing, speech recognition front-end.
Embedded digital filtering
FIR/IIR filtering, spectrum analysis and signal compression.
Performance Comparison
Index | TMS320VC33PGE120 | TMS320C31 (early model) |
Main frequency | 120MHz | 50MHz |
Computing performance | 120MIPS | 50MIPS |
On-chip memory | 34K × 32 bits | 2K × 32 bits |
Number of DMA channels | 6 | 2 |
Serial interface | McBSP (multi-channel) | Fewer serial ports |
Power consumption performance | Low power optimization | Higher |
Compared to the C31 series, the TMS320VC33PGE120 offers significant improvements in performance, storage, and power consumption, making it more suitable for modern complex embedded applications.
Manufacturer Profile: Texas Instruments (TI)
TI is a leading global manufacturer of analog and embedded semiconductors, and its TMS320 series DSPs have a wide influence in the signal processing field. The TMS320VC33PGE120 , part of TI’s classic fixed-point DSP product line, continues to be used in industrial, medical, and communications fields.
Why choose TMS320VC33PGE120?
● 120MIPS high-performance DSP , suitable for real-time signal processing
● Large-capacity on-chip RAM to improve data throughput efficiency
● Low-power design , suitable for embedded and portable applications
● McBSP + DMA support , suitable for high-speed multi-channel data flow
● Industrial-grade operating temperature range , suitable for harsh environments
Frequently Asked Questions (FAQ)
Q1: Does the TMS320VC33PGE120 support floating-point operations?
A: No. The TMS320VC33 is a fixed-point DSP. Its core only supports the fixed-point instruction set and lacks a hardware floating-point unit. If your application requires extensive floating-point calculations, you can implement floating-point operations using software libraries, but this will be somewhat limited in efficiency. If you require high-performance floating-point processing, we recommend TI’s TMS320C67x series or the C67x+ floating-point DSP.
Q2: Can it be used with external SDRAM
? Yes. The TMS320VC33 provides flexible external memory interfaces, supporting connections to SRAM, ROM, FLASH, and DRAM , expanding system storage capacity. By properly configuring the memory map, it can meet the needs of large data processing, program storage, and caching, making it ideal for embedded signal processing systems.
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