Texas Instruments F28M35M22C1RFPT

Overview

F28M35M22C1RFPT from Texas Instruments is a dual-core Concerto™ microcontroller integrating an Arm® Cortex®-M3 master subsystem (75 MHz) and a TMS320C28x real-time control subsystem (75 MHz), with 256KB flash (ECC), 32KB RAM (parity/ECC), dual 12-bit ADCs (2.88 MSPS, 20 channels), six comparators with integrated 10-bit DACs, and two CAN modules - designed for industrial motor drives and solar inverters.

For engineers reviewing the F28M35M22C1RFPT datasheet, F28M35M22C1RFPT pinout, F28M35M22C1RFPT application, or F28M35M22C1RFPT equivalent, this page delivers verified core speeds, memory partitioning, analog subsystem specs, IPC architecture, and thermal package details critical for real-time control + communication co-design.

Technical Context

The F28M35M22C1RFPT implements a tightly coupled dual-core architecture where the Cortex-M3 handles Ethernet 1588, USB OTG, UART/SSI/I²C, and D_CAN communication, while the C28x executes deterministic control loops using nine ePWM modules (16 high-resolution outputs), six eCAP, three eQEP, and VCU-accelerated math. Shared 64KB parity RAM and 2KB IPC message RAM enable low-latency interprocessor coordination.

Its analog subsystem features two independent 12-bit ADCs with 2.88 MSPS aggregate sampling, four sample-and-hold circuits, and six comparator-DAC units - all synchronized to the C28x clock domain. Power delivery uses separate 1.2-V (digital), 1.8-V (analog), and 3.3-V (I/O) rails with on-chip voltage regulation and thermal monitoring via the RFP PowerPAD HTQFP package.

Key Specifications

Pinout & Package

144-pin RFP PowerPAD™ Thermally Enhanced Thin Quad Flatpack (HTQFP) with exposed thermal pad requiring direct soldering to PCB ground plane for thermal dissipation and digital ground reference.

Key Features

Applications

Equivalent & Alternatives

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

Compared with F28M35M22C1RFPT, the M52C variant offers double flash capacity for complex firmware without changing layout or timing, while the H22C variant upgrades communication throughput and precision timing at the cost of higher power and BOM cost - making M22C optimal for cost-sensitive industrial drives with fixed feature sets.

Availability

F28M35M22C1RFPT is available at Aetrix Electronics and suitable for central inverter, string inverter, and AC drive control module applications requiring stable component supply, long-term industrial lifecycle support, and automotive-grade thermal reliability.

Supply support for F28M35M22C1RFPT 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 for industrial, automotive, and communications markets.

The F28M35x Concerto™ family was engineered to unify real-time control and high-speed communication in a single chip - targeting solar inverters, motor drives, and industrial automation systems needing deterministic timing and robust networking.

FAQ

What is the maximum operating junction temperature for F28M35M22C1RFPT?

The F28M35M22C1RFPT is rated for –40°C to 105°C junction temperature (T grade). This specification is validated per TI's thermal resistance characteristics for the RFP PowerPAD HTQFP package and supports continuous operation in industrial enclosures with ambient temperatures up to 70°C when properly heatsinked.

Does F28M35M22C1RFPT support Ethernet 1588 Precision Time Protocol?

No, F28M35M22C1RFPT does not include the 10/100 ENET 1588 MII peripheral. That feature is present only in the H-series variants (e.g., F28M35H52C). The M22C variant retains full MAC-layer Ethernet capability but lacks hardware timestamping and PTP acceleration required for sub-microsecond synchronization.

How many high-resolution PWM outputs does F28M35M22C1RFPT provide?

F28M35M22C1RFPT provides 16 high-resolution PWM outputs across its nine ePWM modules. These outputs support 150-ps resolution and are distributed across EPWM1A/B through EPWM9A/B - enabling precise gate drive control for three-phase inverters with active neutral-point clamping topologies.

Can F28M35M22C1RFPT run both Cortex-M3 and C28x cores at their maximum rated speeds simultaneously?

No. Due to shared clock tree constraints, F28M35M22C1RFPT supports only specific speed combinations: 75 MHz Cortex-M3 + 75 MHz C28x, or 60 MHz Cortex-M3 + 60 MHz C28x. The 100-MHz Cortex-M3 option requires reducing C28x to 75 MHz or lower, which is not implemented in the M22C variant.

What analog input channels are accessible on F28M35M22C1RFPT?

F28M35M22C1RFPT provides 20 total analog input channels: ten per 12-bit ADC module (ADC1 and ADC2), each with dedicated INAx and INBx pins. Channels support simultaneous sampling via software-triggered SOC events and hardware synchronization through ePWM timers - critical for three-phase current reconstruction.