Texas Instruments XF28M35H52C1RFPT

Overview

XF28M35H52C1RFPT 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, dual 12-bit ADCs (2.88 MSPS total), six comparators with integrated DACs, and 10/100 ENET 1588 MII - deployed in industrial AC-DC power supplies and servo drive control modules.

For engineers reviewing the XF28M35H52C1RFPT datasheet, XF28M35H52C1RFPT pinout, XF28M35H52C1RFPT application, or XF28M35H52C1RFPT equivalent, key selection criteria include dual-core clock coordination (100 MHz M3 / 150 MHz C28x), HTQFP-144 PowerPAD thermal packaging, IPC-based interprocessor communication, and AEC-Q100–qualified variants for automotive-grade reliability validation.

Technical Context

The XF28M35H52C1RFPT implements a tightly coupled dual-subsystem architecture: the Cortex-M3 handles high-level communication (USB OTG + PHY, Ethernet 1588, five UARTs, two CAN, four SSIs, two I²Cs) while the C28x core executes deterministic real-time control (nine ePWM modules with 16 HRPWM outputs, six eCAP, three eQEP, VCU-accelerated math). Both subsystems share 64KB parity RAM and 2KB IPC message RAM with 32-channel handshake support.

Its analog subsystem features two independent 12-bit ADCs (10 channels each, 2.88 MSPS aggregate), four sample-and-hold circuits, and six comparators each paired with a 10-bit DAC - all synchronized via shared clocking resources and accessible by either CPU through dedicated analog interface buses. Voltage domains are segregated: 1.2-V digital, 1.8-V analog, and 3.3-V I/O.

Key Specifications

Pinout & Package

XF28M35H52C1RFPT uses a 144-pin HTQFP (RFP PowerPAD™) package with exposed thermal pad soldered to PCB ground plane for optimal thermal dissipation and digital grounding. Pin assignments follow TI's standardized RFP layout with dedicated VDDA/VSSA pins per ADC module and isolated analog/digital power domains.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XF28M35H52C1RFPT, the F28M35H52C-Q1 adds automotive qualification without altering electrical behavior, while the F28M35H22C trades C28x speed and memory for lower cost - both retain identical pinout, peripheral sets, and software compatibility.

Availability

XF28M35H52C1RFPT is available at Aetrix Electronics and suitable for industrial servo drives, solar string inverters, and three-phase UPS systems requiring stable component supply across multi-year production cycles.

Supply support for XF28M35H52C1RFPT 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 Concerto™ family - including XF28M35H52C1RFPT - was designed to unify high-bandwidth communication and deterministic real-time control on a single chip for power electronics, motor control, and energy infrastructure applications.

FAQ

What is the maximum operating frequency of each core in XF28M35H52C1RFPT?

The XF28M35H52C1RFPT features an Arm Cortex-M3 core rated at up to 100 MHz and a TMS320C28x core rated at up to 150 MHz. These frequencies are achievable simultaneously only when the clock divider settings maintain integer ratios between subsystem clocks - confirmed in Table 5-2 of the SPRS742L datasheet. The XF28M35H52C1RFPT supports multiple valid combinations, including 100 MHz M3 / 100 MHz C28x and 75 MHz M3 / 150 MHz C28x.

Does XF28M35H52C1RFPT support IEEE 1588 Precision Time Protocol?

Yes, XF28M35H52C1RFPT integrates a 10/100 ENET MII interface with full IEEE 1588-2008 hardware timestamping capability. The EMAC peripheral includes dedicated registers for ingress/egress timestamp capture, enabling sub-100-ns time synchronization in industrial automation and distributed UPS systems - a feature explicitly documented in Section 7.11 of the datasheet.

How many hardware PWM outputs does XF28M35H52C1RFPT provide, and what is their resolution?

XF28M35H52C1RFPT provides 18 ePWM outputs across nine modules, with 16 of them supporting high-resolution PWM (HRPWM) mode offering 150-ps step resolution. This capability is implemented in the C28x subsystem and is validated in the device's electrical characteristics table (Section 7.6) and peripheral reference guide - enabling precise gate driving for SiC and GaN power stages.

What analog peripherals are integrated into XF28M35H52C1RFPT?

XF28M35H52C1RFPT integrates two independent 12-bit analog-to-digital converters (ADCs), each with 10 input channels and 2.88 MSPS aggregate sampling rate; four sample-and-hold circuits; and six analog comparators, each with a dedicated 10-bit DAC. All analog resources are electrically isolated with separate VDDA/VSSA pins and documented in Sections 7.10 and 8.5 of the SPRS742L datasheet.

Is XF28M35H52C1RFPT pin-compatible with other F28M35x devices?

Yes, XF28M35H52C1RFPT is pin-compatible with all members of the F28M35x family offered in the 144-pin HTQFP (RFP) package, including F28M35H52C-Q1, F28M35H22C, and F28M35M52C. Mechanical compatibility is confirmed in Table 11-1 of the datasheet, and signal multiplexing follows identical pin mapping - enabling hardware reuse across performance tiers.