Texas Instruments F28M35H22C1RFPT

Overview

F28M35H22C1RFPT 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 (75 MHz), with 256KB flash (ECC), 32KB RAM (ECC/parity), dual 12-bit ADCs (2.88 MSPS, 20 channels), six comparators with integrated DACs, and 10/100 ENET 1588 MII. It targets high-precision industrial motor drives and solar inverters requiring synchronized communication and deterministic control.

For engineers reviewing the F28M35H22C1RFPT datasheet, F28M35H22C1RFPT pinout, F28M35H22C1RFPT application, or F28M35H22C1RFPT equivalent, key selection criteria include dual-core clock coordination (Cortex-M3 @ 100 MHz / C28x @ 75 MHz), shared 64KB parity RAM, HTQFP-144 PowerPAD thermal packaging, and AEC-Q100 qualification for automotive-grade reliability in harsh environments.

Technical Context

The F28M35H22C1RFPT implements tightly coupled interprocessor communication (IPC) via 32 handshaking channels and 4KB message RAM, enabling deterministic data exchange between Cortex-M3 and C28x subsystems without bus contention. Its analog subsystem integrates two independent 12-bit ADCs with four sample-and-hold circuits and six comparator-DAC units for closed-loop feedback in real-time control loops.

Hardware security includes dual security zones (128-bit password per zone) for the Cortex-M3 subsystem and one zone for the C28x subsystem, alongside ECC on flash and parity on RAM. Clocking supports dynamic PLL ratio changes and redundant clock sources for fail-safe operation in safety-critical applications.

Key Specifications

Pinout & Package

144-pin RFP PowerPAD™ Thermally Enhanced Thin Quad Flatpack (HTQFP), 20.0 mm × 20.0 mm body size, with exposed thermal pad soldered to PCB ground plane for optimal heat dissipation and digital grounding.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core microcontroller applications.

Compared with F28M35H52C1RFPT, the F28M35H22C1RFPT trades flash capacity and C28x speed for lower cost and thermal footprint, while F28M35M22C1RFPT further reduces feature set to meet entry-level price targets-making F28M35H22C1RFPT the optimal balance for mid-tier industrial inverters and drives.

Availability

F28M35H22C1RFPT is available at Aetrix Electronics and suitable for AC drive control modules, servo drive control modules, string inverters, and three-phase UPS systems requiring stable component supply, long-term industrial lifecycle support, and AEC-Q100-compliant reliability.

Supply support for F28M35H22C1RFPT 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 specializing in analog and embedded processing technologies, with leadership in industrial, automotive, and power electronics markets.

The F28M35x Concerto™ family was designed to unify communication and real-time control on a single chip, targeting solar inverters, industrial motor drives, and grid infrastructure where deterministic timing and protocol stack offload are critical.

FAQ

What is the maximum operating frequency of each core in the F28M35H22C1RFPT?

The F28M35H22C1RFPT features an Arm Cortex-M3 core rated at up to 100 MHz and a TMS320C28x core rated at up to 75 MHz. These frequencies are achievable simultaneously per Table 5-2 in SPRS742L, with the C28x core limited to 75 MHz when the Cortex-M3 runs at 100 MHz to maintain integer clock division ratios. The F28M35H22C1RFPT datasheet confirms this speed combination is fully supported and validated.

Does the F28M35H22C1RFPT include hardware security features for firmware protection?

Yes, the F28M35H22C1RFPT includes dual security zones for the Cortex-M3 subsystem (128-bit password per zone) and one security zone for the C28x subsystem. It also implements Error Correction Code (ECC) on 256KB of flash memory and parity protection on RAM blocks. These features are documented in Section 1 Features and Section 8.18 (Code Security Module) of the SPRS742L datasheet.

How many analog-to-digital converter channels does the F28M35H22C1RFPT support, and what is their sampling rate?

The F28M35H22C1RFPT integrates two independent 12-bit ADC modules, each supporting up to 10 input channels for a total of 20 channels. Each ADC achieves up to 2.88 MSPS aggregate sampling rate with 347 ns conversion time, as specified in Table 5-1 and Section 7.10 of the SPRS742L datasheet. Both ADCs operate concurrently with separate reference and sample-and-hold circuits.

What communication interfaces are available on the F28M35H22C1RFPT for industrial networking?

The F28M35H22C1RFPT provides 10/100 ENET 1588 MII, two Controller Area Network (CAN) modules, five UARTs, four SSI/SPI interfaces, and two I²C ports. It also includes USB OTG with integrated PHY. These interfaces are explicitly listed in the "Features" section and confirmed in the functional block diagram (Figure 3-1) of the SPRS742L datasheet for the F28M35H22C variant.

Is the F28M35H22C1RFPT pin-compatible with other devices in the F28M35x family?

Yes, the F28M35H22C1RFPT uses the same 144-pin HTQFP (RFP PowerPAD™) package as F28M35H52C1RFPT, F28M35M22C1RFPT, and other RFP variants in the family, as confirmed in the "Device Information" table and Section 11.1 of SPRS742L. Pin assignments and thermal pad layout are identical, enabling drop-in replacement within the same package group when peripheral requirements align.