Texas Instruments SM320F28335PTPS

Overview

SM320F28335PTPS from Texas Instruments is a radiation-tolerant, high-temperature digital signal controller (DSC) featuring a 150-MHz C28x CPU, 512 KB on-chip Flash, 68 KB RAM, and integrated control peripherals including six ePWM modules, two eQEPs, six eCAPs, and a 12-bit 16-channel ADC. It operates from –55°C to 125°C ambient and targets motor control, power conversion, and avionics systems requiring deterministic real-time response.

For engineers reviewing the SM320F28335PTPS datasheet, SM320F28335PTPS pinout, SM320F28335PTPS application, or SM320F28335PTPS equivalent, key selection criteria include extended temperature support, radiation-hardened qualification, dual CAN interfaces, high-resolution PWM capability, and compatibility with TI's C2000™ real-time control ecosystem.

Technical Context

The SM320F28335PTPS implements a Harvard-architecture C28x CPU core with 32-bit fixed-point arithmetic, supported by a dedicated memory bus and peripheral bus. Its real-time JTAG debug interface enables non-intrusive emulation without halting execution.

It integrates an oscillator and PLL block supporting 1–20 MHz external crystal or clock input, configurable for up to 150 MHz SYSCLKOUT. The device includes a 16-bit external interface (XINTF) with programmable wait states and supports boot from Flash, OTP, or external memory via GPIO-mapped modes.

Key Specifications

Pinout & Package

SM320F28335PTPS is housed in a 176-pin Low-Profile Quad Flat Package (PTP), thermally enhanced for high-reliability operation across extreme temperature gradients. Pin assignments are defined per Table 2-6 (Signal Descriptions PTP) of SPRS682E.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital signal controller applications.

Compared with TMS320F28335PTP and SM320F28377DPTP, the SM320F28335PTPS uniquely combines flight-qualified temperature range, radiation tolerance, and full C2000™ peripheral compatibility - making it the sole option for legacy-compatible, safety-critical DSC deployments in harsh environments.

Availability

SM320F28335PTPS is available at Aetrix Electronics and suitable for motor control systems, avionics power management units, and downhole drilling instrumentation requiring stable component supply across extended lifecycle programs.

Supply support for SM320F28335PTPS 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 digital signal processing technologies, with decades of heritage in high-reliability aerospace and defense components.

The SM320F28335PTPS belongs to TI's C2000™ real-time microcontroller product line, engineered specifically for precision control of power electronics, motion systems, and industrial automation under demanding environmental conditions.

FAQ

What is the maximum operating temperature specification for SM320F28335PTPS?

The SM320F28335PTPS is rated for continuous operation from –55°C to +125°C ambient temperature and is fully characterized and screened per MIL-PRF-38535 Class V requirements. This includes derating curves for wirebond life and operational lifetime at elevated temperatures, as documented in Figure 6-2 of SPRS682E. The SM320F28335PTPS maintains full functional specification across this range without throttling or feature disablement.

Does SM320F28335PTPS support JTAG debugging in high-temperature environments?

Yes, the SM320F28335PTPS supports real-time JTAG emulation per IEEE 1149.1, with full debug functionality-including breakpoints, watchpoints, and memory inspection-validated across its full –55°C to +125°C operating range. The JTAG interface remains electrically compliant and timing-accurate under thermal stress, enabling in-system validation without thermal chamber interruption.

How many independent PWM outputs does SM320F28335PTPS provide, and what is their resolution?

The SM320F28335PTPS integrates six enhanced PWM (ePWM) modules, each capable of generating two complementary PWM outputs with programmable dead-band. Each ePWM supports High-Resolution PWM (HRPWM) extension delivering 150-ps effective resolution, enabling sub-nanosecond timing control essential for SiC and GaN gate drivers in high-frequency power converters.

Is SM320F28335PTPS pin-compatible with the commercial TMS320F28335PTP variant?

Yes, the SM320F28335PTPS shares identical pinout, package dimensions (176-pin PTP LQFP), and electrical signaling with the TMS320F28335PTP. All GPIO, peripheral, power, and ground pin assignments match exactly per Table 2-6 of SPRS682E, allowing direct substitution in existing PCB layouts when upgrading to radiation-tolerant, high-temperature operation.

What ADC configuration options are available on SM320F28335PTPS?

The SM320F28335PTPS features a 12-bit, 16-channel ADC with selectable sampling modes: sequential (single-channel) and simultaneous (dual-channel). It supports both internal 3.3-V reference and external reference inputs, with programmable sample-and-hold window widths and calibration registers accessible via ADCCTL1/2 and ADCREFSEL. Full timing and calibration procedures are specified in Section 4.7 of SPRS682E.