TMS320F28335 belongs to TI's C2000 Delfino line, the family that added a hardware floating-point unit to the established C28x real-time core. The C28x is not a general-purpose applications processor; it is a control CPU tuned for the inner loops of power and motion systems, where an interrupt has to be taken, an ADC result read, a control law computed and a PWM duty updated within microseconds, cycle after cycle. Adding the single-precision FPU lets the designer write those control laws in floating-point C rather than hand-scaled fixed-point, cutting development time and numerical-scaling bugs without giving up the deterministic timing the loop needs.

Around that 150 MHz core sits the memory and peripheral mix that defines the part. 512 KB of on-chip flash holds the application and the math tables; 68 KB of SARAM gives fast working space; a 6-channel DMA moves ADC and McBSP data without CPU intervention. The control peripherals are the reason engineers reach for a C2000: 18 ePWM channels (six with high-resolution HRPWM for sub-nanosecond edge placement), 6 capture (eCAP) and 2 quadrature-encoder (eQEP) units, and a 16-channel 12-bit ADC that converts in 80 ns. Together they close a digital power or motor loop entirely on chip.

Communications and system glue are equally complete: three SCI (UART), one SPI, two McBSP, one I2C and two eCAN modules cover field buses and host links, while an external interface (XINTF) extends memory for data-logging or display work. The device runs a 1.9 V core and 3.3 V I/O with 88 individually muxable GPIO, and code-security and a boot ROM with multiple boot modes round out a controller designed to drop into a high-reliability industrial or automotive control board.

Note: Values are taken from the Texas Instruments TMS320F28335 datasheet (SPRS439). Confirm every parameter against the latest official documentation before committing a design.

TMS320F28335 in the PGFA order option is supplied in a 176-pin PGF/PTP LQFP (low-profile quad flat pack) measuring 24 mm x 24 mm with a 0.5 mm lead pitch and 1.6 mm maximum height. The 176 gull-wing leads on four sides carry the 88 GPIO, the ADC inputs, the external interface bus and the supplies; the wide body and fine pitch reflect the large peripheral count. The "A" in the orderable code denotes the -40 to +85 °C temperature grade. Package dimensions and the pin-1 orientation are shown below.

📄 Download the official TI TMS320F28335 Datasheet (PDF)

The 176 pins group into supplies, the GPIO/peripheral matrix, the analog front end and the external interface. The key signal groups are:

• VDD / VSS: 1.9 V core supply and ground; multiple pins for low-impedance distribution.
• VDDIO / VDD3VFL: 3.3 V I/O supply and the 3.3 V flash supply.
• VDDA / VSSA / VREFs: Analog supply, ground and ADC reference pins for the 12-bit converter.
• GPIO0-GPIO87: 88 multiplexed general-purpose I/O that map to ePWM, eCAP, eQEP, SCI, SPI, McBSP, I2C and eCAN functions.
• ADCINA0-7 / ADCINB0-7: The 16 analog inputs to the 12-bit ADC.
• X1 / X2 / XCLKIN: Crystal oscillator and external clock inputs for the on-chip PLL.
• XRS: Reset input; TRST/TCK/TMS/TDI/TDO form the JTAG debug port.
• XINTF bus (XA, XD, XWE, XRD, XZCS): Address, data and control lines of the external interface for off-chip memory.
• TZ / EPWM / ECAP / EQEP: Trip-zone, PWM, capture and quadrature signals brought out through the GPIO mux for the control loop.

The parts below are references within TI's C2000 family. They are not drop-in replacements; verify memory size, FPU presence, package and peripheral count before substituting.

Selection Tips: Choose TMS320F28335 when a single-core floating-point control loop needs 512 KB flash and a full ePWM/ADC set in a 176-LQFP. Step down to F28334/F28332 to save memory cost, to F28069 Piccolo for a smaller lower-cost design, or up to the dual-core F2837xD when one C28x core can no longer carry the control and communications load.

Texas Instruments Incorporated, headquartered in Dallas, Texas, USA, is one of the world's largest analog and embedded-processing semiconductor companies. The TMS320F28335 is part of TI's C2000 real-time MCU portfolio, the Delfino series that brought hardware floating-point to the long-running C28x control-CPU line widely used in power electronics and motion control.

The C2000 line is backed by a deep real-time-control ecosystem: the C2000Ware driver and library package, controlSUITE reference designs, DigitalPower and motor-control software development kits, and Code Composer Studio. That support, together with long-term supply and broad temperature options including automotive Q grades, is why C2000 controllers remain a default choice for digital-power and drive designs that must run unattended for years.