Texas Instruments TMS320F28027DAS

Overview

TMS320F28027DAS from Texas Instruments is a 32-bit C28x real-time microcontroller optimized for motor control and digital power applications, operating at 60 MHz (16.67-ns cycle time), featuring 32 KB on-chip Flash, 6 KB SARAM, 8 KB Boot ROM, and integrated 12-bit ADC with 7 channels and 3 MSPS sampling rate.

For engineers reviewing the TMS320F28027DAS datasheet, TMS320F28027DAS pinout, TMS320F28027DAS application, or TMS320F28027DAS equivalent, key selection considerations include its 38-pin TSSOP package, single 3.3-V supply operation, ePWM/HRPWM peripheral set, code-security module, and temperature rating of –40°C to 125°C (S-grade).

Technical Context

The TMS320F28027DAS implements a Harvard-architecture C28x CPU core with atomic instruction support and unified memory model, enabling deterministic real-time control loops. It integrates dual-edge high-resolution PWM (HRPWM) on four ePWM modules, analog comparators with internal 10-bit references, and a 12-bit ADC with dual sample-and-hold supporting ratio-metric VREFHI/VREFLO referencing.

Its clock system includes two zero-pin internal oscillators, on-chip crystal oscillator support (X1/X2), external clock input (XCLKIN), and missing-clock detection. Power management features an internal voltage regulator enabling single-rail 3.3-V operation with no sequencing requirement, plus POR/BOR circuitry and watchdog timer.

Key Specifications

Pinout & Package

Package: 38-pin Thin Shrink Small-Outline Package (TSSOP), body size 12.5 mm × 6.2 mm, lead pitch 0.65 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28027PT and TMS320F28026DAS, the TMS320F28027DAS delivers optimal balance of compact packaging, full HRPWM capability, and secure 32 KB Flash - making it the preferred choice for thermally constrained, high-efficiency motor and power conversion designs requiring long-term code maintainability.

Availability

TMS320F28027DAS is available at Aetrix Electronics and suitable for air conditioner outdoor units, micro inverters, and AC drive power stage modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TMS320F28027DAS 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 consumer markets.

The TMS320F28027DAS belongs to TI's C2000™ real-time microcontroller product line, designed specifically for closed-loop control in motor drives, digital power supplies, and renewable energy systems where deterministic timing, analog integration, and code security are critical.

FAQ

What is the maximum operating frequency of the TMS320F28027DAS?

The TMS320F28027DAS operates at a maximum CPU frequency of 60 MHz, corresponding to a 16.67-ns instruction cycle time. This speed is supported across its full operating temperature range of –40°C to 125°C (S-grade). The device achieves this performance using its optimized C28x core with Harvard bus architecture and zero-wait-state on-chip memory, enabling deterministic real-time execution for demanding control applications such as servo drives and resonant converters.

Does the TMS320F28027DAS support hardware-based security features?

Yes, the TMS320F28027DAS includes a dedicated code-security module with 128-bit encryption key and lock mechanism that protects on-chip Flash, SARAM, and OTP memory blocks from unauthorized read access or firmware reverse engineering. This feature is implemented in hardware and activated during programming - once locked, memory contents cannot be extracted via JTAG or boot ROM interfaces, providing robust IP protection for proprietary motor control or power conversion algorithms stored in TMS320F28027DAS firmware.

What analog peripherals are integrated into the TMS320F28027DAS?

The TMS320F28027DAS integrates a 12-bit analog-to-digital converter (ADC) with 7 input channels, dual sample-and-hold, and ratio-metric reference support (VREFHI/VREFLO); two analog comparators (COMP1A/B and COMP2A/B) with internal 10-bit DAC references; and an on-chip temperature sensor. These peripherals are directly routable to ePWM trip-zone logic for hardware fault response, eliminating the need for external comparators or ADC interface components in most real-time control implementations using the TMS320F28027DAS.

Can the TMS320F28027DAS operate from a single 3.3-V supply?

Yes, the TMS320F28027DAS is designed for single-rail operation from a nominal 3.3-V supply. Its integrated voltage regulator generates the internal 1.8-V core voltage, removing the need for external LDOs or complex power sequencing. The device also includes built-in power-on reset (POR) and brown-out reset (BOR) circuitry, further simplifying system-level power design. This architecture makes the TMS320F28027DAS especially suitable for space-constrained applications where minimizing external components is critical - such as compact motor control modules and micro inverters.

What is the pin-compatible alternative to the TMS320F28027DAS in the same package?

The TMS320F28026DAS is the direct pin-compatible alternative in the same 38-pin DA TSSOP package and S-grade temperature range. It shares identical pinout, power requirements, and peripheral mapping but offers reduced memory (16 KB Flash, 5 KB SARAM) and lacks high-resolution PWM (HRPWM) capability. While not a drop-in replacement for HRPWM-dependent designs, the TMS320F28026DAS serves as a cost-optimized option for less demanding applications where full TMS320F28027DAS feature set is unnecessary.