Texas Instruments TMS320UC5402GGU-80

Overview

TMS320UC5402GGU-80 from Texas Instruments is a fixed-point digital signal processor (DSP) with 16K × 16-bit dual-access RAM, 4K × 16-bit on-chip ROM, 12.5-ns instruction cycle time (80 MIPS), 1.8-V core supply, and 1.8–3.6-V I/O supply. It executes single-cycle MAC operations and supports real-time audio processing in portable telecom terminals.

For engineers reviewing the TMS320UC5402GGU-80 datasheet, TMS320UC5402GGU-80 pinout, TMS320UC5402GGU-80 application, or TMS320UC5402GGU-80 equivalent, key selection considerations include its GGU-packaged 144-ball BGA footprint, PLL-enabled clock multiplication, McBSP serial interface timing, and HPI8 host-port compatibility for embedded control integration.

Technical Context

The TMS320UC5402GGU-80 implements an advanced modified Harvard architecture with three independent 16-bit data buses and one program bus, enabling simultaneous access to program and dual data memory spaces. Its 40-bit ALU includes a barrel shifter and two accumulators, supporting Viterbi decoding via the CSSU unit.

On-chip peripherals include two multichannel buffered serial ports (McBSPs) with SPI master/slave capability, an enhanced 8-bit host-port interface (HPI8), dual 16-bit timers, and a six-channel DMA controller. The PLL clock generator accepts external crystal or clock input and supports multiply-by-N (N = 1, 2, 4, 8) configurations.

Key Specifications

Pinout & Package

The TMS320UC5402GGU-80 is housed in a 144-ball MicroStar™ BGA package (GGU suffix), with 0.8-mm ball pitch and 12 mm × 12 mm body size. Ball assignments follow JEDEC MO-205 standard for 144-terminal BGA.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-point DSP applications.

Compared with TMS320VC5402PGE-80, the TMS320UC5402GGU-80 offers superior thermal dissipation and board density via BGA packaging, while TMS320C5409APGE-120 provides higher throughput at the cost of increased power and non-interchangeable memory mapping.

Availability

TMS320UC5402GGU-80 is available at Aetrix Electronics and suitable for VoIP terminals, portable medical analyzers, digital hearing aids, and industrial motor controllers requiring stable component supply across extended production lifecycles.

Supply support for TMS320UC5402GGU-80 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and digital signal processing technologies with over 50 years of innovation in high-reliability IC design.

The TMS320C54x family-including the TMS320UC5402GGU-80-was engineered for ultra-low-power, high-MIPS fixed-point signal processing in portable and battery-operated systems demanding deterministic real-time performance.

FAQ

What is the maximum operating frequency of the TMS320UC5402GGU-80?

The TMS320UC5402GGU-80 achieves a maximum instruction execution rate of 80 MIPS, corresponding to a 12.5-ns instruction cycle time. This is realized using the on-chip PLL configured for 8× multiplication of a 10-MHz external clock source. The device does not support frequencies beyond this rating, and operation outside the specified 80-MIPS limit violates TI's production data specifications.

Does the TMS320UC5402GGU-80 support JTAG debugging?

Yes, the TMS320UC5402GGU-80 integrates IEEE Std 1149.1 (JTAG) boundary scan logic and on-chip emulation logic. This enables full visibility into internal registers and memory during development, supporting real-time breakpoints, watchpoints, and trace via TI's XDS510-class emulators. The TMS320UC5402GGU-80 uses dedicated TCK, TDI, TDO, TMS, and TRST pins routed to the GGU package balls.

Can the TMS320UC5402GGU-80 operate with only a 1.8-V supply?

Yes, the TMS320UC5402GGU-80 supports single-supply operation at 1.8 V applied to both CVDD (core) and DVDD (I/O) pins. Its I/O buffers are rated for 1.8–3.6 V, so 1.8-V DVDD ensures full compatibility with 1.8-V peripherals. TI explicitly confirms this configuration in Section 1.2 of SPRS096B and recommends it for lowest-power portable designs.

What serial interface protocols does the TMS320UC5402GGU-80 McBSP support?

The TMS320UC5402GGU-80 features two McBSPs that support TDM, I2S, AC97, and SPI master/slave modes. Protocol selection is controlled by register bits (CLKSTP, CLKXP) documented in Tables 4–23 through 4–30 of SPRS096B. Each McBSP can be independently configured-e.g., McBSP0 as I2S audio master and McBSP1 as SPI slave for sensor data acquisition.

Is the on-chip ROM of the TMS320UC5402GGU-80 mask-programmed or field-programmable?

The 4K × 16-bit on-chip ROM in the TMS320UC5402GGU-80 is mask-programmed during fabrication and contains TI's standard bootloader and initialization code. It is not field-programmable or reconfigurable. Users load application code into external memory or on-chip RAM via HPI8, serial boot, or parallel boot modes-never into the ROM itself.