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Texas Instruments announces industry's lowest power DSPs, now running at 150 MHz performance

Texas Instruments

DALLAS (September 7, 2010) — Allowing designers to create energy-efficient portable and battery-powered applications at higher levels of performance, Texas Instruments Incorporated (TI) (NYSE: TXN) today announced the availability of TMS320C5504 and TMS320C5505 ultra-low-power digital signal processors (DSPs) at 150 MHz, providing 25 percent higher performance than previous C55x devices.

The C5504 and C5505 processors offer the industry’s lowest total power at less than 0.15 mW/MHz and standby power at less than 0.15 mW. The processors feature up to 320 KB of on-chip memory and multiple integrated peripherals that reduce system cost by more than 20 percent compared to earlier C55x processors. Dynamic voltage and frequency scaling can be used to maximize the battery life for different operating conditions, allowing up to 40 percent additional battery life compared to earlier C55x processors.

C5504 and C5505 total power consumption

Power Consumption Performance

<0.15 mW/MHz 60 MHz

<0.22 mW/MHz 120 MHz

<0.27 mW/MHz 150 MHz

The C5504 DSP provides a low-cost solution with the right combination of performance and standby and active power levels for emerging portable applications that require up to 256 kB on-chip memory, such as portable voice recorders and MP3 players. The C5505 DSP builds on the C5504 by adding an additional 64 kB on-chip memory, an integrated display controller and fast Fourier transform (FFT) hardware acceleration for end equipments such as noise-cancellation headphones, musical instruments, medical monitoring, biometrics and seismic sensors.

Both devices are pin-to-pin and software compatible, offering the same energy efficiency and performance with a different peripheral set. This allows system designers to develop one platform that bridges different price markets by migrating between processors.

C5504 features and benefits

Feature Benefit

Highly-integrated high-speed USB 2.0, I2S, UART, SPI, MMC/SD and GPIOs Enables more user-friendly portable features and reduces system cost

256 kB of on-chip memory Reduces the need for external memory, saving both power and system cost

16-bit dual-MAC CPU Integrates a highly energy efficient digital signal processing core for audio, voice and smart sensor applications

C5505 features and benefits

Feature Benefit

Builds on C5504 with an additional 64 kB on-chip memory (320kB total)

Eliminates the need for external memory, saving cost and power and offering fast access to application and data

Up to 1024-point programmable FFT hardware accelerator

Augments peripherals available on C5504, integrating an LCD display controller and 10-bit 4-channel successive approximation (SAR) ADC Provides seamless and flexible connections to media, analog devices and other processors, reducing overall system cost

Pricing and availability

The TMS320C5504 DSP is priced at $6.20 in quantities of 1,000 units (1 ku). Both devices are sampling now. The TMS320C5505 is priced at $7.45 US in quantities of 1,000 units. The C5504 and C5505 are the latest processor in TI’s growing portfolio of approximately 36 ultra-low-power DSPs and development resources.

With an extensive portfolio of ultra-low-power devices, including the lowest power DSPs, the lowest power floating-point DSPs, ultra-low-power MSP430™ microcontrollers and power management solutions, TI continues to lead the market with innovative, energy-efficient solutions.

Find out more about TI’s extensive C55x DSP portfolio

• C5504 product page:

• C5505 product page:

• C5504 technical briefs:

• C5505 technical briefs:

• C550x FAQ:

• DSP selection tool:

• Power management solutions for the C55x DSP:

• Ultra-low-power MSP430 MCUs:

• TI E2E community and support:

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About Texas Instruments

Texas Instruments (NYSE: TXN) helps customers solve problems and develop new electronics that make the world smarter, healthier, safer, greener and more fun. A global semiconductor company, TI innovates through design, sales and manufacturing operations in more than 30 countries. For more information, go to


TMS320C55x, C55x and MSP430 are trademarks of Texas Instruments. All other trademarks and registered trademarks belong to their respective owners.

Source: Texas Instruments