Texas Instruments TMS320R2812PGFQ

Overview

TMS320R2812PGFQ from Texas Instruments is a 32-bit C28x fixed-point digital signal processor (DSP) with 150-MHz CPU clock, 128 KB on-chip Flash memory, 18 KB SARAM, integrated eCAN, McBSP, SCI, SPI, and dual 12-bit ADCs (16-channel, 2 × 8.25-MSPS). It targets real-time motor control, digital power conversion, and industrial servo systems requiring deterministic interrupt latency and high-resolution PWM generation.

For engineers reviewing the TMS320R2812PGFQ datasheet, TMS320R2812PGFQ pinout, TMS320R2812PGFQ application, or TMS320R2812PGFQ equivalent, key selection criteria include its 176-pin LQFP (PGF) package, external interface (XINTF) for parallel memory expansion, dual event managers (EVA/EVB) with programmable deadband, and support for simultaneous dual-channel ADC sampling at up to 8.25 MSPS per channel.

Technical Context

The TMS320R2812PGFQ implements the C28x CPU core with Harvard bus architecture, 32-bit data path, and 40-bit extended precision accumulator. Its memory subsystem includes boot ROM, M0/M1 SARAM blocks, and L0–L3/H0 SARAM for fast program/data access - all mapped into a unified 4-MB address space.

Peripheral integration centers on real-time control: two Event Manager modules provide 12 PWM outputs with full-compare units, quadrature encoder interfaces, and capture inputs; the enhanced ADC supports sequential or simultaneous sampling across 16 analog inputs with internal 3.3-V reference and ±1 LSB INL.

Key Specifications

Pinout & Package

176-pin Low-Profile Quad Flat Package (PGF), 0.5-mm pitch, exposed thermal pad, RoHS-compliant. Pinout defined per Section 2.3.2 ("Pin Assignments for the PGF Package") of SPRS257C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320R2812PGFQ, the TMS320F2812PGFA offers identical functionality at lower temperature grade, while the TMS320F28335PGFA trades XINTF and dual ADC synchronization for floating-point capability and larger memory - making each suitable for distinct real-time control architectures.

Availability

TMS320R2812PGFQ is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, servo motion controllers, and renewable energy inverters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TMS320R2812PGFQ 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 connectivity technologies, with decades of expertise in real-time control silicon.

The TMS320R2812PGFQ belongs to TI's C2000™ real-time microcontroller family, engineered specifically for high-precision closed-loop digital control in power electronics and motion systems.

FAQ

What is the maximum operating frequency of the TMS320R2812PGFQ CPU core?

The TMS320R2812PGFQ CPU core operates at a maximum system clock frequency of 150 MHz (SYSCLKOUT), achieved via an internal PLL that multiplies an external 1–30 MHz XCLKIN source. This yields a 6.67-ns instruction cycle time, enabling deterministic execution of motor control and power conversion algorithms within strict timing budgets.

Does the TMS320R2812PGFQ support simultaneous sampling across multiple analog channels?

Yes, the TMS320R2812PGFQ integrates two independent 12-bit ADC modules that support true simultaneous sampling of two channels (e.g., ADCINA0 and ADCINB0) with <100-ns skew. This capability is essential for vector-controlled motor drives where phase current and DC bus voltage must be captured synchronously for accurate torque calculation.

What peripheral interfaces are included in the TMS320R2812PGFQ for industrial communication?

The TMS320R2812PGFQ includes an enhanced Controller Area Network (eCAN) module compliant with ISO 11898-1, a Multichannel Buffered Serial Port (McBSP), Serial Communications Interface (SCI), and Serial Peripheral Interface (SPI). All support DMA and are designed for robust real-time communication in noisy industrial environments.

Is the TMS320R2812PGFQ pin-compatible with other devices in the R281x family?

Yes, the TMS320R2812PGFQ shares identical pinout and package (176-pin PGF LQFP) with the TMS320R2811PGFQ and TMS320F2812PGFA. However, functional differences exist - notably, only the R2812 includes the External Interface (XINTF) block, which is absent in the R2811 and F2812 variants.

What is the purpose of the XINTF peripheral in the TMS320R2812PGFQ?

The External Interface (XINTF) in the TMS320R2812PGFQ provides a 16-bit parallel bus for connecting external memory (SRAM, Flash, or FPGA) with up to 1-MB address space. It supports programmable wait states, asynchronous/synchronous ready signaling, and burst transfers - enabling expansion beyond on-chip memory for complex control applications.