Texas Instruments F28M35E50C1RFPS

Overview

F28M35E50C1RFPS from Texas Instruments is a dual-core heterogeneous microcontroller integrating an ARM Cortex-M3 master processor and a C28x DSP control subsystem on a single die, featuring 512 KB flash, 132 KB RAM, dual 12-bit ADCs (3.5 MSPS), and 16-channel ePWM with dead-band generation - deployed in industrial motor drives and digital power converters.

For engineers reviewing the F28M35E50C1RFPS datasheet, F28M35E50C1RFPS pinout, F28M35E50C1RFPS application, or F28M35E50C1RFPS equivalent, key selection criteria include dual-core IPC latency, flash ECC protection, analog-to-digital sampling rate, ePWM resolution, and safety features including watchdog timers, missing clock detection, and register write protection.

Technical Context

The F28M35E50C1RFPS implements tightly coupled inter-processor communication via MSGRAMs and hardware IPC flags, enabling deterministic message passing between the M3 and C28x cores without shared bus contention. Its clock architecture includes independent PLLs for each subsystem, with configurable XCLKOUT and support for external clock sources up to 50 MHz.

Safety-critical operation is enforced through multiple hardware mechanisms: PLLSLIP detection, NMIWDs, ECC-enabled flash and RAM, parity-protected registers, and a dedicated Code Security Module (CSM) with 128-bit password protection for flash memory access control.

Key Specifications

Pinout & Package

The F28M35E50C1RFPS is housed in a 176-pin HTQFP package (package code: RFP) with exposed thermal pad, RoHS-compliant, and moisture sensitivity level 3. Pin functions are assigned across GPIO banks A–G, analog inputs, JTAG/debug, power domains (VDDA/VSSA, VDDIO/VSSIO), and dual-core interface signals (IPC flags, MSGRAM address/data).

Key Features

Applications

Equivalent & Alternatives

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

Compared with F28M35E50C1RFPS, the F28M36P63C1RFPS offers incremental feature expansion within the same footprint, while the TMS320F28379DZWTT represents a distinct architectural trade-off favoring analog performance over heterogeneous processing - making F28M35E50C1RFPS optimal for balanced real-time control + system management workloads.

Availability

F28M35E50C1RFPS is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, renewable energy inverters, and factory automation controllers requiring stable component supply across long production lifecycles.

Supply support for F28M35E50C1RFPS 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The Concerto F28M35x product line was designed to unify real-time control and system-level intelligence in a single chip - targeting applications where deterministic C28x performance must coexist with ARM-based connectivity, security, and user interface capabilities.

FAQ

What is the maximum operating frequency of each core in the F28M35E50C1RFPS?

The F28M35E50C1RFPS operates its ARM Cortex-M3 core at up to 100 MHz and its TMS320C28x DSP core at up to 100 MHz, with independent PLLs allowing asynchronous clock domains. Both cores maintain full performance under the specified –40°C to 105°C ambient temperature range. This dual 100-MHz capability enables F28M35E50C1RFPS to execute high-bandwidth control loops and system-level tasks concurrently without resource contention.

Does the F28M35E50C1RFPS support hardware-based inter-processor communication?

Yes, the F28M35E50C1RFPS implements dedicated hardware IPC using eight MTOCIPC and eight CTOMIPC flag registers, plus 16 KB of MSGRAM with semaphore arbitration. This allows the ARM M3 and C28x cores to exchange data and synchronize events with sub-microsecond latency and zero software overhead. The F28M35E50C1RFPS IPC architecture eliminates polling and guarantees atomic access, critical for time-deterministic motor control and power conversion.

What safety features are integrated into the F28M35E50C1RFPS?

The F28M35E50C1RFPS integrates multiple hardware safety features: PLLSLIP detection, missing clock detection, dual NMI watchdog timers (one per core), ECC-protected flash and RAM, parity-protected registers, and write-protection locks on critical control registers. These features collectively support functional safety development per IEC 61508 SIL 2 and ISO 13849 PL e. All safety mechanisms operate independently of software execution, ensuring F28M35E50C1RFPS reliability in industrial environments.

Can the F28M35E50C1RFPS execute secure boot and firmware authentication?

Yes, the F28M35E50C1RFPS includes a Code Security Module (CSM) with 128-bit password protection, zone-based flash locking, and secure ROM bootloader (M-Boot and C-Boot). It supports encrypted firmware image loading, checksum validation, and secure key storage in OTP. The CSM enforces strict access control so that only authenticated code can execute from protected flash regions - a foundational capability for securing F28M35E50C1RFPS-based industrial edge devices against tampering.

What analog peripherals are included in the F28M35E50C1RFPS?

The F28M35E50C1RFPS integrates two independent 12-bit SAR ADCs with aggregate throughput of 3.5 MSPS, 16-channel analog input multiplexers, and hardware synchronization triggers linked to ePWM time bases. It also includes analog comparators with programmable hysteresis and reference voltage sources. These analog resources are accessible to both cores via dedicated crossbar switches, enabling F28M35E50C1RFPS to perform simultaneous high-fidelity current/voltage sensing and real-time fault detection in power electronics applications.