Texas Instruments F28M35H52C1RFPS

Overview

F28M35H52C1RFPS from Texas Instruments is a dual-core Concerto™ microcontroller integrating an Arm® Cortex®-M3 master subsystem (100 MHz) and a TMS320C28x real-time control subsystem (150 MHz), with 512KB ECC flash, 32KB RAM (ECC/parity), 64KB shared RAM, dual 12-bit ADCs (2.88 MSPS, 20 channels), six comparators with integrated 10-bit DACs, and Ethernet 1588 + USB OTG for industrial motor drives and solar inverters.

For engineers reviewing the F28M35H52C1RFPS datasheet, F28M35H52C1RFPS pinout, F28M35H52C1RFPS application, or F28M35H52C1RFPS equivalent, key selection criteria include dual-core clock coordination (100/150 MHz), HTQFP-144 PowerPAD thermal packaging, IPC message RAM for interprocessor synchronization, and AEC-Q100–qualified variants for automotive-grade reliability.

Technical Context

The F28M35H52C1RFPS implements tightly coupled heterogeneous processing: the Cortex-M3 handles communication tasks (10/100 ENET MII, USB-OTG, 2× CAN, 5× UART, 4× SSI/SPI, 2× I²C) while the C28x executes deterministic real-time control (9× ePWM with 16 HRPWM outputs, 6× eCAP, 3× eQEP, VCU-accelerated FFT/CRC). Both cores share 64KB parity RAM and dual 12-bit ADCs with independent sample-and-hold circuits.

Hardware safety features include dual security zones (128-bit password per zone), ECC on flash and critical RAM, parity on non-ECC RAM, NMI watchdogs per subsystem, and glitch-free GPIOs. Clocking supports dynamic PLL ratio changes, with independent 1.2-V digital, 1.8-V analog, and 3.3-V I/O domains - all validated for –40°C to 105°C junction operation.

Key Specifications

Pinout & Package

Package: 144-pin RFP PowerPAD™ Thermally Enhanced Thin Quad Flatpack (HTQFP), 20.0 mm × 20.0 mm, with exposed thermal pad requiring solder connection to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with F28M35H52C-Q1, the F28M35H52C1RFPS offers identical performance and pin compatibility but lacks automotive qualification documentation; versus F28M36H52C, it provides proven stability and lower BOM cost where advanced EtherCAT or +2dB SNR are not required.

Availability

F28M35H52C1RFPS is available at Aetrix Electronics and suitable for industrial motor drives, solar string inverters, and three-phase UPS systems requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized TI distribution channels.

Supply support for F28M35H52C1RFPS 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 industrial and automotive microcontrollers.

The F28M35H52C1RFPS belongs to TI's Concerto™ family - designed specifically to unify high-bandwidth communication and deterministic real-time control in single-chip solutions for energy conversion, motor control, and grid infrastructure.

FAQ

What is the maximum operating frequency of each core in the F28M35H52C1RFPS?

The F28M35H52C1RFPS features an Arm Cortex-M3 core rated for up to 100 MHz and a TMS320C28x core rated for up to 150 MHz. These frequencies are simultaneously achievable only when using appropriate clock dividers; Table 5-2 in the SPRS742L datasheet confirms valid combinations including 100 MHz (Cortex-M3) / 100 MHz (C28x) and 75 MHz / 150 MHz. The F28M35H52C1RFPS datasheet specifies these as guaranteed operational limits under recommended conditions.

Does the F28M35H52C1RFPS support hardware-based interprocessor communication?

Yes, the F28M35H52C1RFPS includes a dedicated Interprocessor Communication (IPC) module with 32 handshaking channels, four IPC interrupt sources, and 2KB of dedicated message RAM (1KB per direction). This hardware block enables lock-free, atomic signaling and data transfer between the Cortex-M3 and C28x subsystems without software polling or shared-memory arbitration overhead - a key feature confirmed in Section 1.1 and Figure 3-1 of the SPRS742L datasheet.

What analog capabilities does the F28M35H52C1RFPS provide for motor control?

The F28M35H52C1RFPS integrates two independent 12-bit ADCs capable of 2.88 MSPS aggregate sampling, 20 total input channels, and four sample-and-hold circuits. It also includes six analog comparators, each with a dedicated 10-bit DAC for reference generation. These resources are explicitly documented in Sections 1.1 and 7.10 of SPRS742L and are used for simultaneous current sensing, DC-link voltage monitoring, and fast overcurrent protection in motor drive applications.

Is the F28M35H52C1RFPS pin-compatible with other devices in the F28M35x family?

Yes, the F28M35H52C1RFPS shares the same 144-pin HTQFP (RFP PowerPAD™) package and pinout with F28M35H52C, F28M35H52C-Q1, F28M35H22C, F28M35M52C, and F28M35M22C, as confirmed in Table 5-1 and Section 11.1 of SPRS742L. Pin assignments, signal multiplexing, and power/ground locations are identical across these variants, enabling drop-in replacement within the same temperature grade and feature subset.

What safety features are implemented in the F28M35H52C1RFPS for industrial applications?

The F28M35H52C1RFPS includes ECC on 512KB flash and selected RAM blocks, parity on non-ECC RAM, dual independent security zones (128-bit password each), NMI watchdogs for both CPU subsystems, critical register lock protection, and hardware fault trip zones mapped to 64 GPIOs. These mechanisms - detailed in Sections 1.1, 5, and 8.18 of SPRS742L - support IEC 61508 SIL-2 and UL 1998 certification efforts for industrial safety systems.