Texas Instruments TMS320R2812GHHQ

Overview

TMS320R2812GHHQ from Texas Instruments is a 32-bit C28x fixed-point digital signal processor (DSP) optimized for real-time motor control and power conversion. It features a 150-MHz CPU, 128 KB on-chip Flash memory, 18 KB RAM, dual event managers (EVA/EVB), a 12-bit 16-channel ADC with 80-ns conversion time, and integrated eCAN, SPI, SCI, and McBSP peripherals. It operates across industrial temperature range (–40°C to 125°C) in a 179-ball MicroStar BGA (GHH) package and is deployed in servo drives, inverters, and digital power supplies.

For engineers reviewing the TMS320R2812GHHQ datasheet, TMS320R2812GHHQ pinout, TMS320R2812GHHQ application, or TMS320R2812GHHQ equivalent, key selection criteria include CPU clock speed, ADC resolution/sampling rate, PWM channel count and dead-band programmability, external memory interface (XINTF) support, and industrial-grade thermal rating - all confirmed for this specific GHH-package variant.

Technical Context

The TMS320R2812GHHQ implements a Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and operand access. Its C28x CPU includes a 32×32-bit multiplier, 32-bit ALU, and 40-bit barrel shifter, supporting deterministic real-time execution via pipelined instruction flow and hardware loop control.

It integrates two independent Event Manager modules (EVA/EVB), each providing six PWM outputs with programmable dead-band generation, quadrature encoder pulse (QEP) inputs, and capture units for precise timing measurement. The on-chip 12-bit ADC supports both sequential and simultaneous sampling modes with configurable start triggers from PWM or external signals.

Key Specifications

Pinout & Package

Package: 179-ball MicroStar BGA (GHH), 12 mm × 12 mm, 0.8-mm ball pitch, RoHS-compliant. Ball map follows TI SPRS257C Figure 2−1 (bottom view).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital signal processor applications.

Compared with TMS320F2812PGFA, the TMS320R2812GHHQ adds XINTF for external memory expansion and uses a smaller BGA footprint; versus TMS320F28335PGFA, it trades floating-point capability and larger memory for lower cost and proven industrial reliability in mature motor control deployments.

Availability

TMS320R2812GHHQ is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, solar inverters, and electric vehicle on-board chargers requiring stable component supply and long-term manufacturability.

Supply support for TMS320R2812GHHQ 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 wireless technologies, with decades of expertise in industrial and automotive control ICs.

The TMS320R2812GHHQ belongs to TI's C2000™ real-time microcontroller family, designed specifically for digital power conversion and motor control applications demanding deterministic timing, high analog integration, and robust industrial qualification.

FAQ

What is the maximum operating frequency of the TMS320R2812GHHQ?

The TMS320R2812GHHQ operates at a maximum system clock frequency of 150 MHz, achieved via its internal PLL that multiplies an external crystal or oscillator input. This frequency is fully supported across the full industrial temperature range (–40°C to +125°C) and enables sub-microsecond interrupt response times essential for high-bandwidth motor control loops. All timing specifications in the SPRS257C datasheet assume this 150-MHz SYSCLKOUT.

Does the TMS320R2812GHHQ include on-chip Flash memory, and is it error-correctable?

Yes, the TMS320R2812GHHQ integrates 128 KB of on-chip Flash memory with built-in error-correction circuitry (ECC) for single-bit error correction and detection of multi-bit errors. This ECC implementation protects firmware integrity in harsh electromagnetic environments typical of industrial motor drives and power converters, reducing risk of silent corruption during long-term operation.

How many PWM outputs does the TMS320R2812GHHQ support, and are they independently configurable?

The TMS320R2812GHHQ supports 12 enhanced PWM outputs - six from Event Manager A (EVA) and six from Event Manager B (EVB). Each output pair (e.g., EPWM1A/EPWM1B) is independently configurable for frequency, duty cycle, phase shift, and dead-band delay. Hardware-based dead-band generation operates without CPU intervention, ensuring consistent timing even under heavy computational load.

What ADC resolution and sampling speed does the TMS320R2812GHHQ provide?

The TMS320R2812GHHQ features a 12-bit analog-to-digital converter with 16 input channels and a minimum conversion time of 80 nanoseconds. It supports both sequential sampling (single-channel burst) and simultaneous sampling (dual-channel synchronized capture), with start-of-conversion triggers programmable from PWM timers or external pins - critical for accurate current reconstruction in three-phase motor control.

Is the TMS320R2812GHHQ pin-compatible with other devices in the R281x family?

No, the TMS320R2812GHHQ is not pin-compatible with other R281x variants such as the TMS320R2811 or TMS320F2812 due to differences in package type (179-ball GHH BGA vs. 128-pin PBK LQFP or 176-pin PGF LQFP) and ball/pin assignments. While functional registers and peripherals are largely compatible at the software level, PCB layout and signal routing must be designed specifically for the GHH package footprint and I/O mapping defined in SPRS257C Section 2.3.1.