Texas Instruments F28M35E52C1RFPT

Overview

F28M35E52C1RFPT from Texas Instruments is a dual-core heterogeneous microcontroller integrating an ARM Cortex-M3 (Master Subsystem) and a C28x DSP (Control Subsystem) on a single die, with 512 KB on-chip flash, 132 KB RAM, and real-time PWM control capability. It operates at up to 100 MHz (M3) and 150 MHz (C28x), supports IEEE 754 single-precision floating-point, and targets high-precision motor control and digital power conversion.

For engineers reviewing the F28M35E52C1RFPT datasheet, F28M35E52C1RFPT pinout, F28M35E52C1RFPT application, or F28M35E52C1RFPT equivalent, key selection criteria include dual-core IPC latency, ePWM resolution (150 ps time-base), ECC-protected flash/RAM, safety features (PLLSLIP detection, NMIWDs), and TI's Concerto architecture for deterministic real-time control.

Technical Context

The F28M35E52C1RFPT implements a tightly coupled dual-subsystem architecture: the M3 core handles high-level communication, system management, and HMI, while the C28x DSP executes time-critical control loops with sub-microsecond interrupt latency. Inter-processor communication uses MSGRAMs and hardware IPC flags with dedicated MTOC/CTOM registers.

Clocking is managed via two independent PLLs - one for the M3 subsystem (up to 100 MHz) and one for the C28x subsystem (up to 150 MHz) - with shared clock configuration semaphores and configurable XCLKOUT. Safety mechanisms include write-protected registers, missing clock detection, ECC on flash and RAM, and dual watchdog timers (one per subsystem).

Key Specifications

Pinout & Package

Package: 176-pin HTQFP (Heat Sink Thermally Enhanced Quad Flat Package), 7 mm × 7 mm body, 0.4 mm lead pitch, exposed thermal pad (EPAD) for enhanced thermal dissipation in high-power control applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with F28M35E52C1RFPT, the F28M36P63C1RFPT offers expanded memory and CAN FD for scalable industrial networking, while the TMS320F28379D delivers higher DSP throughput but lacks the ARM M3 for embedded Linux or rich HMI-making F28M35E52C1RFPT optimal for balanced real-time + connectivity workloads.

Availability

F28M35E52C1RFPT is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, renewable energy inverters, and uninterruptible power systems requiring stable component supply across extended product lifecycles.

Supply support for F28M35E52C1RFPT 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 focused on analog and embedded processing technologies, with decades of expertise in precision control, power management, and industrial signal chain solutions.

The Concerto family-including F28M35E52C1RFPT-is designed specifically for applications demanding both high-performance real-time control and robust connectivity, bridging the gap between DSP-centric and MCU-centric architectures.

FAQ

What is the maximum operating frequency of each core in the F28M35E52C1RFPT?

The F28M35E52C1RFPT features two independent clock domains: the ARM Cortex-M3 core runs at up to 100 MHz, while the TMS320C28x DSP core operates at up to 150 MHz. These frequencies are sustained under full industrial temperature range (–40°C to 105°C) with proper power supply regulation and thermal design. Both cores retain full instruction-set compatibility and real-time determinism at rated speeds.

Does the F28M35E52C1RFPT support CAN communication?

Yes, the F28M35E52C1RFPT integrates one CAN 2.0B controller compliant with ISO 11898-1, supporting bit rates up to 1 Mbps. It includes dedicated message RAM, transmit/receive FIFOs, and automatic retransmission. The CAN module is accessible exclusively from the C28x subsystem, enabling deterministic real-time messaging in motor control and power conversion networks.

How is flash memory protected against corruption in the F28M35E52C1RFPT?

The F28M35E52C1RFPT implements ECC (Error Correction Code) on its entire 512 KB flash array, detecting and correcting single-bit errors and detecting double-bit errors in real time during read operations. This protection is hardware-enforced and active across all boot modes and runtime execution, ensuring firmware integrity in electrically noisy industrial environments.

What is the role of the MSGRAM in the F28M35E52C1RFPT architecture?

The MSGRAM (Multi-Subsystem Global RAM) in the F28M35E52C1RFPT is a 4 KB on-chip memory block accessible by both the M3 and C28x subsystems without bus arbitration delay. It serves as the primary low-latency data exchange buffer for IPC, hosting shared control parameters, status flags, and command messages-enabling sub-microsecond inter-core synchronization in time-critical applications like digital power loop coordination.

Is the F28M35E52C1RFPT pin-compatible with other Concerto devices?

The F28M35E52C1RFPT is pin-compatible with the F28M35H52C1RFPT and F28M35M52C1RFPT within the same 176-pin HTQFP package family. Differences lie in flash size (512 KB vs. 1 MB), RAM allocation, and peripheral enablement-not pin function or electrical characteristics-allowing drop-in replacement where memory requirements align.