Texas Instruments F28388SZWTSR

Overview

TMS320F28388SZWTSR from Texas Instruments is a dual-CPU real-time microcontroller with integrated Arm Cortex-M4 Connectivity Manager, 200 MHz C28x DSP cores, IEEE 754 double-precision FPU, and 125 MHz CM core. It delivers 512KB flash per C28x CPU, 128KB global RAM, 4× 16-bit/12-bit ADCs (1.1 MSPS), 32-channel ePWM, EtherCAT Slave Controller, CAN FD, and USB 2.0 - deployed in industrial servo drives and solar string inverters.

For engineers reviewing the TMS320F28388SZWTSR datasheet, TMS320F28388SZWTSR pinout, TMS320F28388SZWTSR application, or TMS320F28388SZWTSR equivalent, key selection criteria include dual-core deterministic control latency, CM-C28x IPC bandwidth, CLB configurability for position manager logic, functional safety certification (ASIL B/SIL 2), and nFBGA-337 thermal performance in high-power-density motor control designs.

Technical Context

The TMS320F28388SZWTSR implements two independent 200 MHz C28x CPUs with IEEE 754 double-precision FPU, TMU, VCRC, and Fast Integer Division - each with dedicated 512KB ECC-protected flash and 44KB local RAM. A separate 125 MHz Arm Cortex-M4 Connectivity Manager runs autonomous protocol stacks (Ethernet 1588, EtherCAT, USB 2.0, CAN FD) using its own 512KB ECC flash and 96KB protected RAM.

Inter-processor communication uses hardware IPC with MSGRAM0/MSGRAM1, while CLB tiles augment peripheral timing logic for encoder interface and PWM synchronization. The analog subsystem integrates four ADCs with hardware post-processing, eight windowed comparators, and three 12-bit DACs - all tightly coupled to ePWM and eCAP modules for closed-loop power stage control.

Key Specifications

Pinout & Package

Package: 337-ball New Fine Pitch Ball Grid Array (nFBGA), 16 mm × 16 mm, lead-free/green, rated for –40°C to 125°C junction temperature.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28388SZWTSR, the TMS320F28388DZWT offers identical real-time control capability but relaxed thermal qualification, while the TMS320F28386SZWTSR sacrifices dual-core throughput and CLB flexibility to meet tighter cost targets - making the F28388SZWTSR optimal for safety-critical, multi-axis, or FPGA-augmented systems.

Availability

TMS320F28388SZWTSR is available at Aetrix Electronics and suitable for industrial servo drives, solar string inverters, on-board EV chargers, and three-phase UPS systems requiring stable component supply across extended product lifecycles.

Supply support for TMS320F28388SZWTSR 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and digital signal processing technologies.

The TMS320F28388SZWTSR belongs to TI's C2000™ real-time MCU family, engineered specifically for high-efficiency power electronics - including SiC/GaN-based motor drives, renewable energy inverters, and digital power supplies demanding ultra-low latency and deterministic execution.

FAQ

What is the operating temperature range for the TMS320F28388SZWTSR?

The TMS320F28388SZWTSR is specified for –40°C to 125°C junction temperature, validated under continuous operation with proper PCB thermal design and airflow. This S-grade rating ensures reliability in high-power-density applications such as servo drives and onboard chargers where localized heating exceeds ambient limits. The device includes on-chip temperature sensors and DCC circuitry to monitor thermal margins in real time.

Does the TMS320F28388SZWTSR support pin-compatible migration from earlier C2000 devices?

No, the TMS320F28388SZWTSR uses a 337-ball nFBGA package with unique pin mapping and power sequencing requirements not shared with prior C2000 generations. Migration from F2837x or F28004x families requires full PCB redesign due to differences in ball pitch, power domain partitioning, and peripheral pin multiplexing. TI provides migration guides but no drop-in replacement path exists for the TMS320F28388SZWTSR.

How does the Connectivity Manager (CM) communicate with the C28x CPUs in the TMS320F28388SZWTSR?

The TMS320F28388SZWTSR uses hardware Inter-Processor Communication (IPC) with four dedicated message RAMs (MSGRAM0–MSGRAM3) and mailbox-style interrupts to coordinate between the Arm Cortex-M4 CM and dual C28x CPUs. Each MSGRAM provides 2 KB of shared memory with atomic read/write access, enabling lock-free data exchange at up to 200 MB/s bandwidth - sufficient for real-time sensor fusion and protocol-to-control data forwarding without CPU polling overhead.

Can the Configurable Logic Block (CLB) in the TMS320F28388SZWTSR replace an external FPGA?

Yes - the TMS320F28388SZWTSR's 8-tile CLB implements combinational logic, sequential state machines, and custom PWM timing with direct integration into ePWM and GPIO paths. It replaces small FPGAs in applications like resolver-to-digital conversion, advanced dead-time insertion, and position manager logic - eliminating external components while maintaining deterministic timing and reducing board area. CLB configuration is done via C2000Ware APIs and verified in hardware simulation.

Is the TMS320F28388SZWTSR qualified for automotive applications?

No - the TMS320F28388SZWTSR carries the 'S' suffix denoting industrial temperature grade (–40°C to 125°C junction) and lacks AEC-Q100 qualification. For automotive use, TI offers the pin-compatible TMS320F28388SQZWT (Q1 grade), which undergoes additional stress testing and includes automotive-specific documentation for ISO 26262 system integration. The TMS320F28388SZWTSR is intended for industrial, energy, and commercial equipment only.