Texas Instruments TMS320C28345ZHHT

Overview

TMS320C28345ZHHT from Texas Instruments is a 32-bit floating-point Delfino™ microcontroller designed for high-precision real-time control in power electronics. It operates at 200 MHz (5-ns cycle time), integrates 130K × 16 SARAM, features 18 ePWM channels with 9 HRPWM outputs (55-ps MEP resolution at 1.1 V), and supports dual CAN, 3 SCI, 2 SPI, and I²C interfaces. It targets industrial servo drives and solar inverters requiring deterministic timing and high-resolution modulation.

For engineers reviewing the TMS320C28345ZHHT datasheet, TMS320C28345ZHHT pinout, TMS320C28345ZHHT application, or TMS320C28345ZHHT equivalent, this page delivers verified technical context, validated package mapping to 179-ball MicroStar BGA (ZHH), confirmed peripheral register-level functionality, and real-world selection guidance for high-performance motor and power control designs.

Technical Context

The TMS320C28345ZHHT implements the C28x CPU core with IEEE 754 single-precision FPU and Harvard bus architecture, enabling cycle-accurate deterministic execution for closed-loop control algorithms. Its 6-channel DMA controller offloads data movement from McBSP, XINTF, and SARAM-critical for synchronized ADC capture and PWM update sequences.

Peripheral integration includes three QEP modules for position feedback, six eCAP modules configurable as capture inputs or auxiliary PWMs, and a PIE block managing all 64 peripheral interrupts with low-latency vectoring. The device uses little-endian memory ordering and supports 1.1-V core voltage for optimized performance-power tradeoff in thermal-constrained environments.

Key Specifications

Pinout & Package

Package: 179-ball MicroStar BGA (ZHH), 12.0 mm × 12.0 mm body size, 0.8-mm ball pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar real-time control applications.

Compared with TMS320C28346ZFE, the TMS320C28345ZHHT trades peak clock speed and memory for compact 12 × 12 mm packaging; compared with TMS320C28343ZHH, it adds 12 ePWM channels, 2 eCAP modules, and 1 QEP channel-enabling higher-axis-count motion control without layout change.

Availability

TMS320C28345ZHHT is available at Aetrix Electronics and suitable for industrial servo amplifiers, solar inverters, uninterruptible power supplies, and CNC machining systems requiring stable component supply across extended production lifecycles.

Supply support for TMS320C28345ZHHT 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 company specializing in analog, embedded processing, and digital signal processing technologies for industrial, automotive, and communications markets.

The TMS320C28345ZHHT belongs to TI's Delfino™ MCU family, engineered specifically for high-fidelity real-time control in power conversion and motor drive systems-emphasizing floating-point precision, ultra-fast PWM, and deterministic interrupt response.

FAQ

What is the maximum operating frequency of the TMS320C28345ZHHT?

The TMS320C28345ZHHT operates at a maximum frequency of 200 MHz, corresponding to a 5-ns instruction cycle time. This rating is specified at 1.1-V core voltage and –40°C to 105°C ambient temperature. Performance scales with voltage: at 1.2-V core, the device supports up to 300 MHz, but the TMS320C28345ZHHT variant is factory-configured and tested for 200 MHz operation under industrial temperature conditions.

Does the TMS320C28345ZHHT include on-chip Flash memory?

No, the TMS320C28345ZHHT does not include on-chip Flash memory. As part of the C2834x Delfino™ series, it replaces Flash with additional high-speed SARAM (130K × 16) to maximize CPU clock speed and reduce non-deterministic fetch latency. Code execution occurs from SARAM or external memory via the XINTF interface, requiring external Flash or EEPROM for non-volatile program storage.

How many HRPWM outputs does the TMS320C28345ZHHT support?

The TMS320C28345ZHHT supports nine HRPWM outputs-specifically EPWM1A through EPWM9A-with 55-ps minimum effective pulse width (MEP) resolution when operating at 1.1-V core voltage. These outputs derive from the nine ePWM modules and provide sub-nanosecond timing granularity for advanced dead-band control and carrier-based PWM chopping in high-frequency power converters.

What is the package type and ball count for the TMS320C28345ZHHT?

The TMS320C28345ZHHT uses a 179-ball MicroStar BGA (ZHH) package with 12.0 mm × 12.0 mm body dimensions and 0.8-mm ball pitch. This compact BGA footprint is mechanically and electrically compatible with other ZHH variants in the C2834x family, including TMS320C28343ZHH and TMS320C28341ZHH, enabling scalable design reuse across performance tiers.

Which communication interfaces are integrated into the TMS320C28345ZHHT?

The TMS320C28345ZHHT integrates two CAN 2.0B modules, three SCI (UART) ports, two McBSP modules (configurable as SPI), two standalone SPI modules, and one I²C bus. All interfaces are accessible via multiplexed GPIO pins and support DMA-driven operation to minimize CPU load during high-throughput data transfers in industrial networking and sensor aggregation applications.