Texas Instruments TMS320F28027DAT

Overview

TMS320F28027DAT from Texas Instruments is a 32-bit C28x real-time microcontroller optimized for motor control and digital power applications, featuring a 60-MHz CPU, 32 KB on-chip Flash, 6 KB SARAM, 8 ePWM channels with 4 high-resolution outputs, 12-bit ADC (3 MSPS, 7 channels), and integrated comparators with DACs. It operates from a single 3.3-V supply in industrial temperature range (–40°C to 105°C) and targets inverter gate drive and closed-loop servo systems.

For engineers reviewing the TMS320F28027DAT datasheet, TMS320F28027DAT pinout, TMS320F28027DAT application, or TMS320F28027DAT equivalent, key selection criteria include PWM resolution for field-oriented control, ADC sampling rate for current loop bandwidth, GPIO count for sensor interface scalability, and Flash size for complex FOC/observer algorithm storage.

Technical Context

The TMS320F28027DAT implements the C28x CPU core with Harvard architecture, atomic instructions, and unified memory model-enabling deterministic real-time execution of motor control algorithms. Its peripheral set includes ePWM modules with dual-edge HRPWM capability, PIE-integrated interrupt handling, and ADC with dual sample-and-hold for simultaneous current sensing.

It integrates analog functions including two analog comparators with internal 10-bit references, routed directly to PWM trip zones for hardware-based fault protection. The on-chip voltage regulator enables single-rail 3.3-V operation, eliminating external sequencing requirements while supporting GPIO, analog I/O, and core logic from one supply.

Key Specifications

Pinout & Package

38-pin Thin Shrink Small-Outline Package (TSSOP), body size 12.5 mm × 6.2 mm, lead pitch 0.65 mm, surface-mount compatible.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28027DAT, the TMS320F28027PT offers expanded analog I/O and pin count in LQFP, while TMS320F28026DAT reduces Flash and removes HRPWM-making it unsuitable for advanced FOC implementations requiring sub-nanosecond timing precision.

Availability

TMS320F28027DAT is available at Aetrix Electronics and suitable for inverter & motor control, air conditioner outdoor units, micro inverter designs, and AC-DC power supplies requiring stable component supply across industrial production cycles.

Supply support for TMS320F28027DAT 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, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.

The TMS320F28027DAT belongs to TI's C2000™ real-time microcontroller portfolio, designed specifically for closed-loop control in motor drives, solar inverters, and digital power systems-emphasizing deterministic timing, analog integration, and code efficiency.

FAQ

What is the maximum operating frequency of the TMS320F28027DAT CPU core?

The TMS320F28027DAT features a C28x 32-bit CPU core running at 60 MHz, corresponding to a 16.67-ns instruction cycle time. This speed is factory-configured and supported across the full industrial temperature range (–40°C to 105°C). The device does not support dynamic frequency scaling; clock stability is maintained via internal oscillators or external crystal input on X1/X2 pins.

Does the TMS320F28027DAT include hardware-based security features?

Yes, the TMS320F28027DAT includes a Code Security Module with 128-bit encryption key and lock mechanism that protects on-chip Flash, SARAM, and OTP memory blocks. This prevents unauthorized read-out of firmware and inhibits reverse engineering of proprietary motor control algorithms stored in secure memory regions.

How many high-resolution PWM (HRPWM) channels does the TMS320F28027DAT support?

The TMS320F28027DAT supports four high-resolution PWM channels-ePWM1A, ePWM2A, ePWM3A, and ePWM4A-each capable of dual-edge control with sub-nanosecond resolution. These HRPWM outputs are implemented within the standard ePWM modules and do not require additional peripherals or external components.

Can the TMS320F28027DAT operate from a single 3.3-V supply without external regulators?

Yes, the TMS320F28027DAT integrates an on-chip voltage regulator (VREG) enabling true single-rail 3.3-V operation for core, I/O, and analog domains. No external power sequencing is required, and all supply pins (VDD, VDDIO, VDDA) are rated for 3.3 V ±10%, simplifying power delivery design in space-constrained motor control boards.

What analog input channels are available on the TMS320F28027DAT?

The TMS320F28027DAT provides seven 12-bit ADC input channels in Group A (ADCINA0–ADCINA6) and three in Group B (ADCINB2, ADCINB4, ADCINB6), totaling 10 usable analog inputs. Six of these-AIO2, AIO4, AIO6, AIO10, AIO12, AIO14-are shared with digital GPIO functionality and support analog-to-digital conversion in both groups.