Texas Instruments F28M35E50B1RFPS

Overview

F28M35E50B1RFPS 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 total), and hardware-accelerated PWM with dead-band generation - deployed in industrial motor drives and digital power converters.

For engineers reviewing the F28M35E50B1RFPS datasheet, F28M35E50B1RFPS pinout, F28M35E50B1RFPS application, or F28M35E50B1RFPS equivalent, this page delivers verified core architecture, memory mapping, safety features (ECC flash/RAM, watchdogs, NMIWDs), IPC mechanisms, and real-world use cases for embedded control systems requiring deterministic timing and functional safety support.

Technical Context

The F28M35E50B1RFPS implements a tightly coupled dual-processor architecture: the M3 core handles high-level communication, system management, and HMI tasks at up to 100 MHz, while the C28x DSP executes real-time control loops at up to 150 MHz with dedicated ePWM, CLA, and analog interface peripherals. Both subsystems share access to 64 KB MSGRAM and 16 KB CSGRAM via hardware semaphore-controlled inter-processor communication.

It integrates safety-critical features including ECC-protected flash and RAM, missing clock detection, PLLSLIP monitoring, NMI watchdog timers (NMIWDs), and write-protected configuration registers - all documented in the SPRUH22I Technical Reference Manual and aligned with IEC 61508 SIL-2 readiness requirements for industrial control applications.

Key Specifications

Pinout & Package

F28M35E50B1RFPS is housed in a 176-pin Low-Profile Quad Flat Package (LQFP) with 0.4 mm pitch, thermally enhanced for industrial temperature operation (–40°C to 125°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with F28M35E50B1RFPS, the F28M36P63C1RFPS offers expanded memory and compute resources within pin compatibility, while the TMS320F28379D removes the ARM subsystem entirely - making it a lower-cost alternative only when external communication handling is offloaded.

Availability

F28M35E50B1RFPS is available at Aetrix Electronics and suitable for industrial motor drives, digital power supplies, renewable energy inverters, and PLC I/O modules requiring stable component supply across extended product lifecycles.

Supply support for F28M35E50B1RFPS 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 over 50 years of innovation in 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 DSP performance must coexist with robust communication, security, and safety features.

FAQ

What is the operating temperature range for F28M35E50B1RFPS?

The F28M35E50B1RFPS is rated for industrial temperature operation from –40°C to +125°C ambient, validated per TI's qualification standards for extended thermal reliability. This range supports deployment in motor drive cabinets, outdoor solar inverters, and factory-floor PLC modules without derating. The device includes on-die temperature sensors and thermal shutdown logic that triggers at 150°C junction temperature - ensuring safe operation even under transient overload conditions. All specifications in the SPRUH22I manual apply across this full range.

Does F28M35E50B1RFPS support CAN communication?

Yes, F28M35E50B1RFPS includes a dedicated CAN controller compliant with ISO 11898-1 (CAN 2.0B) integrated into its M3 subsystem, with pin-mapped CANRX/CANTX signals on GPIO pins. It supports bit rates up to 1 Mbps and includes message objects, FIFO buffering, and automatic retransmission. The M3 firmware stack can implement CANopen or DeviceNet profiles, while the C28x remains free for time-critical control - enabling hybrid communication-and-control architectures without external transceivers beyond physical layer interfacing.

How is flash memory protected against corruption in F28M35E50B1RFPS?

F28M35E50B1RFPS implements ECC (Error Correction Code) on all 512 KB of on-chip flash memory, detecting and correcting single-bit errors and detecting double-bit errors in real time during read operations. Flash writes require explicit ECC calculation by the FMC controller, and the boot ROM validates flash checksums at startup. Additionally, the Code Security Module (CSM) allows locking flash sectors to prevent unauthorized read/write access - providing both hardware-level reliability and security enforcement for certified industrial firmware deployments.

Can F28M35E50B1RFPS run standalone without external memory?

Yes, F28M35E50B1RFPS is fully self-contained with 512 KB on-chip flash and 132 KB on-chip RAM - sufficient to host complete motor control firmware, communication stacks, and safety monitors without external memory. Its boot ROM supports multiple modes (flash, RAM, SCI, SPI), and the C28x and M3 subsystems each have dedicated RAM partitions. External memory interfaces (e.g., EMIF) are not present on this variant, confirming its design intent for compact, high-integration embedded control applications where board space and BOM count are constrained.

What debug interfaces does F28M35E50B1RFPS support?

F28M35E50B1RFPS supports JTAG and SWD (Serial Wire Debug) interfaces via dedicated TCK/TMS/TDO/TDI/SWCLK/SWDIO pins, compatible with TI XDS100v3/XDS200 emulators and third-party ARM-compliant debuggers. Both M3 and C28x cores are accessible simultaneously for multi-core debugging, with real-time watchpoint support and hardware breakpoints. The device also includes an Embedded Trace Macrocell (ETM) for instruction trace on the M3 core and C28x program flow trace - enabling cycle-accurate analysis of control loop timing and IPC synchronization in complex real-time applications.