Texas Instruments F2800135PTR

Overview

F2800135PTR from Texas Instruments is a 120-MHz C28x 32-bit real-time microcontroller with FPU and TMU acceleration, 128KB flash, 36KB ECC/parity-protected RAM, and dual 4-MSPS 12-bit ADCs. It integrates 14 ePWM channels (2 with 150-ps resolution), 1 CAN port, 3 SCI, 2 I2C, 1 SPI, and 38 GPIO for high-precision motor control in power electronics systems.

For engineers reviewing the F2800135PTR datasheet, F2800135PTR pinout, F2800135PTR application, or F2800135PTR equivalent, this page delivers verified technical context, package-specific pin mapping, real-time control peripheral specifications, and validated alternative options for industrial motor drives and power conversion designs.

Technical Context

The F2800135PTR implements TI's C28x CPU core at 120 MHz with integrated FPU32 and Trigonometric Math Unit (TMU), enabling deterministic execution of complex control algorithms like field-oriented control (FOC) and sensorless estimation. Its dual 12-bit ADCs operate at 4 MSPS with four post-processing blocks per ADC for real-time filtering and triggering.

Control peripherals include 14 ePWM channels with hardware dead-band generation and two integrated trip zones, plus one eQEP module supporting CW/CCW quadrature decoding. The device supports zero-pin boot and dual-zone security via DCSM, with internal 3.3-V to 1.2-V voltage regulation and brownout reset.

Key Specifications

Pinout & Package

Package: 48-pin LQFP (PT suffix), 9 mm × 9 mm body size, 0.5 mm pitch, RoHS-compliant. Thermal resistance θ_JA = 47.2°C/W (JEDEC standard board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with F2800137PT, F2800135PTR offers 50% less flash but identical real-time peripheral performance and timing precision; compared with F280023PT, it delivers 20% higher CPU frequency, double ADC throughput, and 133% more ePWM channels - making it optimal for mid-tier motor drives where feature density and cost must be balanced.

Availability

F2800135PTR is available at Aetrix Electronics and suitable for industrial motor drives, solar power optimizers, and appliance compressor control requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for F2800135PTR 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 power management technologies with over 90 years of innovation in industrial and automotive electronics.

The TMS320F280013x product line is designed specifically for real-time control in power electronics, emphasizing ultra-low latency, integrated analog signal chains, and hardware-accelerated math for motor and power conversion applications.

FAQ

What is the maximum operating frequency of the F2800135PTR CPU core?

The F2800135PTR features a C28x 32-bit DSP CPU core rated for 120 MHz operation. This frequency is fully supported across the full –40°C to 125°C ambient temperature range and enables deterministic execution of real-time control loops with sub-microsecond latency. The F2800135PTR maintains this speed without derating, unlike lower-tier variants such as the F280023PT (100 MHz) or F2800132 (100 MHz).

Does the F2800135PTR support hardware-based functional safety features?

Yes, the F2800135PTR includes dual-zone security (DCSM), JTAGLOCK, zero-pin boot, and ECC-protected flash/RAM - foundational elements for ASIL-B compliance. While it does not integrate lockstep cores or built-in self-test (BIST) like higher-tier C2000 devices, its memory protection, watchdog timers, and trip zone hardware provide verifiable fault containment for motor control safety mechanisms. Full ISO 26262 qualification requires system-level implementation, but the F2800135PTR provides the necessary hardware primitives.

How many analog input channels are accessible on the F2800135PTR in the 48-pin PT package?

In the 48-pin LQFP (PT) package, the F2800135PTR provides access to 11 analog input channels (A0–A10) shared with GPIO functions, plus 10 additional digital inputs routed through analog-capable pins. This yields up to 21 total analog-capable inputs, though only 11 are physically exposed on the PT package. The full 21-channel capability is available only on larger packages (e.g., 64-pin PM).

Can the F2800135PTR generate PWM signals with better than 1-ns timing resolution?

Yes - two ePWM channels (ePWM1A/B) on the F2800135PTR support high-resolution mode with 150-ps step resolution. This capability is hardware-implemented and does not require external PLLs or delay lines. It enables precise dead-time control for SiC and GaN power stages, reducing shoot-through risk and improving efficiency in high-frequency resonant converters and motor inverters.

Is an external crystal required for reliable operation of the F2800135PTR?

No - the F2800135PTR includes two internal 10-MHz oscillators with ±1% accuracy when used with external resistor tuning (ExtR). A crystal is optional and only required when tighter timing stability (<±100 ppm) or synchronization across multiple devices is needed. For most motor control and power supply applications, the internal oscillators meet timing requirements without added BOM cost or board space.