Texas Instruments TMS320F28050PNS

Overview

TMS320F28050PNS from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated analog front end, 12-bit ADC (2 MSPS, 16 channels), 14 ePWM channels, and dual-zone security for motor control applications in AC-input BLDC drives and inverter modules.

For engineers reviewing the TMS320F28050PNS datasheet, TMS320F28050PNS pinout, TMS320F28050PNS application, or TMS320F28050PNS equivalent, this page delivers verified functional scope, confirmed peripheral allocation, validated package mapping (80-pin LQFP), and precise alternative part comparisons for industrial motor control design-in.

Technical Context

The TMS320F28050PNS implements a Harvard-architecture 32-bit C28x CPU running at 60 MHz (16.67-ns cycle time) with atomic operations, fast interrupt response, and unified memory programming model. It integrates a dedicated analog front end comprising six comparators, two internal DACs, one buffered reference DAC, three PGAs, and four digital filters - all mapped to its 16-channel, 2-MSPS 12-bit ADC subsystem.

Clocking relies on dual zero-pin oscillators or external crystal (X1/X2), with on-chip VREG enabling single 3.3-V supply operation. Peripheral support includes three SCI/UARTs, one SPI, one I²C, one eCAN, three 32-bit CPU timers, and JTAG boundary scan compliant with IEEE 1149.1.

Key Specifications

Pinout & Package

Package: 80-pin Low-Profile Quad Flatpack (LQFP), 12.0 mm × 12.0 mm, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28052PNS and TMS320F28051PNS, the TMS320F28050PNS offers the minimal memory and analog feature set within the F2805x family - optimized for cost-sensitive, single-axis BLDC or PFC-only applications where CLA or expanded Flash is unnecessary.

Availability

TMS320F28050PNS is available at Aetrix Electronics and suitable for AC-input BLDC motor drives, inverter modules, and air conditioner outdoor unit control requiring stable component supply across industrial production lifecycles.

Supply support for TMS320F28050PNS 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 TMS320F2805x series belongs to TI's C2000™ real-time control MCU portfolio, designed specifically for closed-loop performance in motor control, digital power, and sensing applications - emphasizing analog integration, deterministic timing, and robust security.

FAQ

What is the maximum operating frequency and instruction cycle time of the TMS320F28050PNS?

The TMS320F28050PNS operates at a maximum CPU frequency of 60 MHz, delivering a 16.67-ns instruction cycle time. This timing is achieved using the on-chip zero-pin oscillators or an external crystal/resonator, and it is fully supported across the specified temperature range of –40°C to 125°C. All timing-critical peripherals - including ePWM, ADC, and CLA (where present) - are synchronized to this clock domain. The TMS320F28050PNS does not include the CLA block, unlike higher variants such as the TMS320F28051PNS.

Does the TMS320F28050PNS include a programmable gain amplifier (PGA) and how many are available?

Yes, the TMS320F28050PNS includes three programmable gain amplifiers (PGAs), each supporting discrete gain settings of approximately 3, 6, or 11. These PGAs are part of the analog front end and connect directly to ADC input channels, enabling signal conditioning prior to digitization. This configuration matches the device comparison table in SPRS797F, which specifies "3" for PGA count in the TMS320F28050 row - one fewer than the 4 PGAs in TMS320F28052PNS and above.

What analog comparators and DACs are integrated into the TMS320F28050PNS?

The TMS320F28050PNS integrates six analog comparators and two internal 6-bit DACs for comparator reference generation, plus one buffered reference DAC (VREFOUT). This differs from higher-family members like the TMS320F28052PNS, which includes seven comparators and three internal DACs. All comparators support direct routing to ePWM trip-zone inputs, enabling hardware-level fault response without CPU intervention - a key feature for motor overcurrent protection.

What is the Flash and SARAM memory size of the TMS320F28050PNS?

The TMS320F28050PNS contains 16K × 16-bit (32 KB) of on-chip Flash memory and 6K × 16-bit (12 KB) of SARAM. This memory map is confirmed in Table 5-1 of the SPRS797F datasheet and supports typical motor control firmware, including boot ROM, control law code, calibration data, and runtime variables. The device also includes 1K × 16-bit OTP, 12K × 16-bit Boot ROM, and Secure ROM for protected code storage.

Is the TMS320F28050PNS pin-compatible with other F2805x family members?

Yes, the TMS320F28050PNS shares the identical 80-pin PN LQFP package and pinout with all other F2805x devices, including TMS320F28051PNS through TMS320F28055PNS. Signal assignments - including GPIO, ePWM, ADC, and JTAG - are functionally identical across the family. However, peripheral availability (e.g., CLA, number of comparators/DACs, Flash size) varies by part number, so firmware and PCB layout must be validated against the specific variant's datasheet section "Device Comparison".