Product details


DSP 1 C55x DSP MHz (Max) 50, 100 CPU 16-bit Operating system DSP/BIOS, VLX Rating Catalog Operating temperature range (C) -10 to 70, -40 to 85 open-in-new Find other Digital signal processors (DSPs)

Package | Pins | Size

NFBGA (ZAY) 144 144 mm² 12 x 12 open-in-new Find other Digital signal processors (DSPs)


  • CORE:
    • High-Performance, Low-Power, TMS320C55x Fixed-Point Digital Signal Processor
      • 20-, 10-ns Instruction Cycle Time
      • 50-, 100-MHz Clock Rate
      • One or Two Instructions Executed per Cycle
      • Dual Multiply-and-Accumulate Units (Up to 200 Million Multiply-Accumulates per Second [MMACS])
      • Two Arithmetic and Logic Units (ALUs)
      • Three Internal Data and Operand Read Buses and Two Internal Data and Operand Write Buses
      • Software-Compatible with C55x Devices
      • Industrial Temperature Devices Available
    • 320KB of Zero-Wait State On-Chip RAM, Composed of:
      • 64KB of Dual-Access RAM (DARAM), 8 Blocks of 4K x 16-Bit
      • 256KB of Single-Access RAM (SARAM), 32 Blocks of 4K x 16-Bit
    • 128KB of Zero Wait-State On-Chip ROM
      (4 Blocks of 16K x 16-Bit)
    • Tightly Coupled FFT Hardware Accelerator
    • Direct Memory Access (DMA) Controller
      • Four DMA with 4 Channels Each (16 Channels Total)
    • Three 32-Bit General-Purpose (GP) Timers
      • One Selectable as a Watchdog or GP
    • Two Embedded Multimedia Card (eMMC) or Secure Digital (SD) Interfaces
    • Universal Asynchronous Receiver/Transmitter (UART)
    • Serial Port Interface (SPI) with Four Chip Selects
    • Master and Slave Inter-Integrated Circuit (I2C Bus)
    • Four Inter-IC Sound (I2S Bus) for Data Transport
    • Device USB Port with Integrated 2.0 High-Speed PHY that Supports:
      • USB 2.0 Full- and High-Speed Device
    • LCD Bridge with Asynchronous Interface
    • 10-Bit 4-Input Successive Approximation (SAR) ADC
    • IEEE-1149.1 (JTAG)
    • 32 General-Purpose I/O (GPIO) Pins
      (Multiplexed with Other Device Functions)
      • Configure Up to 20 GPIO Pins at the Same Time
  • POWER:
    • Four Core Isolated Power Supply Domains: Analog, RTC, CPU and Peripherals, and USB
    • Three I/O Isolated Power Supply Domains: RTC I/O, USB PHY, and DVDDIO
    • Three integrated LDOs (DSP_LDO, ANA_LDO, and USB_LDO) to power the isolated domains: DSP Core, Analog, and USB Core, respectively
    • 1.05-V Core (50 MHz), 1.8-, 2.5-, 2.75-, or 3.3-V I/Os
    • 1.3-V Core (100 MHz), 1.8-, 2.5-, 2.75-, or 3.3-V I/Os
  • CLOCK:
    • Real-Time Clock (RTC) with Crystal Input, Separate Clock Domain, and Separate Power Supply
    • Low-Power Software Programmable Phase-Locked Loop (PLL) Clock Generator
    • On-Chip ROM Bootloader (RBL) to Boot From SPI EEPROM, SPI Serial Flash or I2C EEPROM eMMC, SD, SDHC, UART, and USB
    • 144-Terminal Pb-Free Plastic BGA (Ball Grid Array) (ZHH Suffix)

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These devices are members of TI's C5000 fixed-point Digital Signal Processor (DSP) product family and are designed for low-power applications.

The fixed-point DSP is based on the TMS320C55x DSP generation CPU processor core. The C55x DSP architecture achieves high performance and low power through increased parallelism and total focus on power savings. The CPU supports an internal bus structure that is composed of one program bus, one 32-bit data read bus and two 16-bit data read buses, two 16-bit data write buses, and additional buses dedicated to peripheral and DMA activity. These buses provide the ability to perform up to four 16-bit data reads and two 16-bit data writes in a single cycle. The device also includes four DMA controllers, each with 4 channels, providing data movement for 16-independent channel contexts without CPU intervention. Each DMA controller can perform one 32-bit data transfer per cycle, in parallel and independent of the CPU activity.

The C55x CPU provides two multiply-accumulate (MAC) units, each capable of 17-bit x 17-bit multiplication and a 32-bit add in a single cycle. A central 40-bit arithmetic and logic unit (ALU) is supported by an additional 16-bit ALU. Use of the ALUs is under instruction set control, providing the ability to optimize parallel activity and power consumption. These resources are managed in the Address Unit (AU) and Data Unit (DU) of the C55x CPU.

The C55x CPU supports a variable byte width instruction set for improved code density. The Instruction Unit (IU) performs 32-bit program fetches from internal or external memory and queues instructions for the Program Unit (PU). The PU decodes the instructions, directs tasks to the AU and DU resources, and manages the fully protected pipeline. Predictive branching capability avoids pipeline flushes on execution of conditional instructions.

The general-purpose input and output functions, along with the 10-bit SAR ADC on the TMS320C5535, provide sufficient pins for status, interrupts, and bit I/O for LCD displays, keyboards, and media interfaces. Serial media is supported through two secure digital (SD) peripherals, four Inter-IC Sound (I2S Bus) modules, one serial port interface (SPI) with up to four chip selects, one I2C multimaster and slave interface, and a universal asynchronous receiver/transmitter (UART) interface.

Additional peripherals include: a high-speed Universal Serial Bus (USB 2.0) device mode only (not available on TMS320C5532), a real-time clock (RTC), three general-purpose timers with one configurable as a watchdog timer, and an analog phase-locked loop (APLL) clock generator.

In addition, the TMS320C5535 includes a tightly coupled FFT Hardware Accelerator. The tightly coupled FFT Hardware Accelerator supports 8- to 1024-point (in power of 2) real and complex-valued FFTs.

Furthermore, the device includes the following three integrated LDOs to power different sections of the device.

ANA_LDO (all devices) provides 1.3 V to the DSP PLL (VDDA_PLL), SAR, and power-management circuits (VDDA_ANA).

DSP_LDO (TMS320C5535 and 'C5534) provides 1.3 V or 1.05 V to the DSP core (CVDD), selectable on-the-fly by software as long as operating frequency ranges are observed. For lowest power operation, the programmer can shut down the internal DSP_LDO, cutting power to the DSP core (CVDD) while an external supply provides power to the RTC (CVDDRTC and DVDDRTC). The RTC alarm interrupt or the WAKEUP pin can re-enable the internal DSP_LDO and re-apply power to the DSP core. When DSP_LDO comes out of reset, it is enabled to 1.3 V for the bootloader to operate. For the 50-MHz devices, DSP_LDO must be programmed to 1.05 V to match the core voltage, CVDD, for proper operation after reset.

USB_LDO (TMS320C5535, 'C5534, and 'C5533) provides 1.3 V to the USB core digital (USB_VDD1P3) and PHY circuits (USB_VDDA1P3).

These devices are supported by the industry’s award-winning eXpressDSP, Code Composer Studio Integrated Development Environment (IDE), DSP/BIOS, Texas Instruments’ algorithm standard, and the industry’s largest third-party network. Code Composer Studio IDE features code generation tools including a C Compiler and Linker, RTDX, XDS100, XDS510, XDS560 emulation device drivers, and evaluation modules. The devices are also supported by the C55x DSP library which features more than 50 foundational software kernels (FIR filters, IIR filters, FFTs, and various math functions) as well as chip support libraries.

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Technical documentation

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Type Title Date
* Data sheet TMS320C5535, 'C5534, 'C5533, 'C5532 Fixed-Point Digital Signal Processors datasheet (Rev. C) Apr. 23, 2014
* Errata TMS320C5532/5533/5534/5535 MicroStar BGA Discontinued and Redesigned May 20, 2020
* Errata TMS320C5535/34/33/32 Fixed-Point DSP Silicon Errata (Silicon Revision 2.2) (Rev. C) Jul. 15, 2015
Application note How to Migrate CCS 3.x Projects to the Latest CCS (Rev. A) May 19, 2021
Technical article Bringing the next evolution of machine learning to the edge Nov. 27, 2018
Technical article Industry 4.0 spelled backward makes no sense – and neither does the fact that you haven’t heard of TI’s newest processor yet Oct. 30, 2018
Technical article How quality assurance on the Processor SDK can improve software scalability Aug. 22, 2018
Application note Using the TMS320C5545/35/34/33/32 Bootloader (Rev. D) Jul. 31, 2018
Application note Migrating From TMS320C5535 to TMS320C5545 (Rev. A) Oct. 06, 2016
Technical article Clove: Low-Power video solutions based on Sitara™ AM57x processors Jul. 21, 2016
User guide TMS320C5545/35/34/33/32 ULP DSP Technical Reference Manual (Rev. H) Apr. 06, 2016
Application note Power Estimation and Pwr Consumption Sum for TMS320C5504/05/14/15/32/33/34/35/45 (Rev. A) Apr. 04, 2016
Application note C5000 DSP-Based Low-Power System Design Nov. 30, 2015
Application note Migrating from TMS320C5515/05 to TMS320C5535/34/33/32 (Rev. A) Dec. 22, 2011
User guide TMS320C55x DSP Peripherals Overview Reference Guide (Rev. K) Dec. 15, 2011
More literature TMS320C553x-Industry’s Lowest Power DSPs Now at the Unbelievable Price of $1.95 (Rev. B) Sep. 13, 2011
User guide TMS320C55x v3.x DSP Algebraic Instruction Set Reference Guide (Rev. E) Jun. 24, 2009
User guide TMS320C55x v3.x DSP Mnemonic Instruction Set Reference Guide (Rev. E) Jun. 24, 2009
User guide TMS320C55x DSP v3.x CPU Reference Guide (Rev. E) Jun. 17, 2009
User guide TMS320C55x Assembly Language Tools User's Guide (Rev. H) Jul. 31, 2004
User guide TMS320C55x Optimizing C/C++ Compiler User's Guide (Rev. F) Dec. 31, 2003

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development


The TMDX5535eZdsp is a small form factor, very low cost USB-powered DSP development kit which includes all the hardware and software needed to evaluate the C553x and C5545 DSP families, which are the industry’s lowest-cost and lowest power 16-bit DSP. This ultra-low-cost kit allows quick and (...)


The C5532, C5533, C5534, C5535 and C5545 are the industry’s lowest cost and lowest power 16-bit processors helping conserve energy at exceptional levels and enabling longer battery life. With 200 MIPS performance, up to 320KB on-chip memory, higher integration (including a hardware accelerator (...)

XDS200 USB Debug Probe

The XDS200 is a debug probe (emulator) used for debugging TI embedded devices.  The XDS200 features a balance of low cost with good performance as compared to the low cost XDS110 and the high performance XDS560v2.  It supports a wide variety of standards (IEEE1149.1, IEEE1149.7, SWD) in a (...)


The XDS200 is the mid-range family of JTAG debug probes (emulators) for TI processors. Designed to deliver good performance and the most common features that place it between the low cost XDS110 and the high performance XDS560v2, the XDS200 is the balanced solution to debug TI microcontrollers (...)


The XDS560v2 is the highest performance of the XDS family of debug probes and supports both the traditional JTAG standard (IEEE1149.1) and cJTAG (IEEE1149.7).  Note that it does not support serial wire debug (SWD).

All XDS debug probes support Core and System Trace in all ARM and DSP processors that (...)


XDS560v2 is the latest variant of the XDS560 family of high-performance debug probes (emulators) for TI processors. With the fastest speeds and most features of the entire XDS family, XDS560v2 is the most comprehensive solution to debug TI microcontrollers, processors and wireless connectivity (...)


The XDS560v2 is the highest performance of the XDS family of debug probes and supports both the traditional JTAG standard (IEEE1149.1) and cJTAG (IEEE1149.7). Note that it does not support serial wire debug (SWD).

All XDS debug probes support Core and System Trace in all ARM and DSP processors that (...)


XDS560v2 is the latest variant of the XDS560 family of high-performance debug probes (emulators) for TI processors. With the fastest speeds and most features of the entire XDS family, XDS560v2 is the most comprehensive solution to debug TI microcontrollers, processors and wireless connectivity (...)

Software development

Bootimg.bin for Audio Capacitive Touch BoosterPack
AUDIOCAPDSP-C55X Bootimg.bin is the program boot file for the Audio Capacitive Touch Booster Pack. It should be used when the file is accidentally deleted from the SD card and the Audio Capacitive Touch Booster Pack is unable to boot.
LaunchPad Host Application for Audio Capacitive Touch Booster Pack
AUDIOCAPHOST-MSP430 This application software runs on the MSP430G2553 on the MSP430 LaunchPad Value Line Development Kit with the Audio Capacitive Touch Booster Pack - taking user inputs and controlling the C55x DSP on the Audio Capacitive Touch Booster Pack.
C55x Connected Audio Framework
C55X-AUDIOFRAMEWORK — The TMS320C55x™ Connected Audio Framework provides a software framework which allows the C55x devices to operate as a USB Audio peripheral. In addition to providing this capability, the framework can be extended by users by the incorporation of audio processing algorithms in the record and (...)
For USB Audio Class Features, please see: C5000 Connected Audio Framework Wiki
TMS320C55x DSP Library (DSPLIB)
SPRC100 The DSP Library (DSPLIB) is a collection of high-level optimized DSP function modules for the C55x DSP platform. This source-code library includes C-callable functions (ANSI-C language compatible) for general signal processing math and vector functions that have been ported to C55x DSPs. The (...)
TMS320C55x Chip Support Libraries (CSL) – Standard and Low-Power
SPRC133 The C55x Chip Support Libraries (CSL) provide an application programming interface (API) used for configuring and controlling the DSP on-chip peripherals for ease of use, compatibility between various C55x devices and hardware abstraction. CSLs will shorten development time by providing (...)
Telecom and Media Libraries - FAXLIB, VoLIB and AEC/AER for TMS320C64x+ and TMS320C55x Processors
TELECOMLIB Voice Library - VoLIB provides components that, together, facilitate the development of the signal processing chain for Voice over IP applications such as infrastructure, enterprise, residential gateways and IP phones. Together with optimized implementations of ITU-T voice codecs, that can be acquired (...)


  • Telogy Software Line Echo Canceller (ECU)
  • Tone Detection Unit (TDU)
  • Caller ID Detection/Generation (CID)
  • Tone Generation Unit (TGU)
  • Voice Activity Detection Unit (VAU)
  • Noise Matching Functions
  • Packet Loss Concealment (PLC)
  • Voice Enhancement Unit (VEU)  


  • Fax Interface Unit (FIU)
  • Fax Modem (FM)
  • (...)
Adaptive Digital Technologies DSP VOIP, speech and audio codecs
Provided by Adaptive Digital Technologies, Inc. — Adaptive Digital is a developer of voice quality enhancement algorithms, and best-in-class acoustic echo cancellation software that work with TI DSPs. Adaptive Digital has extensive experience in the algorithm development, implementation, optimization and configuration tuning. They provide solutions (...)
Algotron C5000 DSP telecom and audio codecs
Provided by Algotron Algotron provides C5000 DSP software modules for telecoms & audio. Examples are: modem data pumps, speech coders, signal generators & detectors for DTMF and caller ID. All modules feature simple yet flexible interfaces with full re-entrancy. They come with user's guides, example (...)
CouthIT DSP VoIP, speech, and audio codecs
Provided by Couth Infotech Pvt. Ltd. — Since 1999, CouthIT has been helping customers transform their ideas into real-time robust software solutions. They license specialized, pre-built, highly optimized software modules in the areas of VoIP and speech and audio codecs, and provide software optimization and customization services for (...)
DSP Innovations: DSP VoIP codecs
Provided by DSP Innovations DSP Innovations is a supplier of C5000TM DSP-software and engineering services. Proprietary and standard vocoders from DSPINI have superior characteristics, operate in range from 300 bps up to 64 kbps and are used in: secure voice, software defined radio, wireless, VoIP, voice storage, and more (...)
Spirit DSP audio and speech codecs
Provided by Spirit DSP — Since inception in 1992 SPIRIT has become a global brand in top quality voice, audio and data communication software products and is well known for innovation. SPIRIT is a technology enabling company, leveraging its extensive experience in smart carrier-grade solutions for voice and video (...)
Vocal technologies DSP VoIP codecs
Provided by VOCAL Technologies, Ltd. — With over 25 years of assembly and C code development, VOCAL modular software suite is available for a wide variety of TI DSPs. Products include ATAs, VoIP servers and gateways, HPNA-based IPBXs, video surveillance, voice and video conferencing, voice and data RF devices, RoIP gateways, secure (...)

Design tools & simulation

Arm-based MPU, arm-based MCU and DSP third-party search tool
PROCESSORS-3P-SEARCH TI has partnered with companies to offer a wide range of software, tools, and SOMs using TI processors to accelerate your path to production. Download this search tool to quickly browse our third-party solutions and find the right third-party to meet your needs. The software, tools and modules (...)
  • Supports many TI processors including Sitara and Jacinto processors and DSPs
  • Search by type of product, TI devices supported, or country
  • Links and contacts for quick engagement
  • Third-party companies located around the world

Reference designs

MP3 Encoder/Decoder with capacitive touch interface, OLED display & SD card mass storage
TIDM-LPBP-TCHMP3PLAYER The Audio Capacitive Touch design module is a plug in board for the MSP430 LaunchPad development kit (MSP-EXP430G2). This TI Design features several capacitive touch elements including a scroll wheel, button and proximity sensor, 9 LEDs that provide instant feedback as users interact with the (...)
document-generic Schematic

CAD/CAE symbols

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Support & training

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