Texas Instruments TMS320LF2403APAGS

Overview

TMS320LF2403APAGS from Texas Instruments is a 32-bit fixed-point DSP controller optimized for digital motor control, featuring a 40-MIPS C2xx CPU core, 16K-word on-chip Flash memory, single-event-manager (EVA) module with 6 PWM outputs and 3 capture inputs, and integrated 10-bit ADC with 8-channel analog input and 500-ns minimum conversion time - deployed in brushless DC motor drives and industrial servo amplifiers.

For engineers reviewing the TMS320LF2403APAGS datasheet, TMS320LF2403APAGS pinout, TMS320LF2403APAGS application, or TMS320LF2403APAGS equivalent, key selection criteria include its 64-pin TQFP (PAG) package, CAN 2.0B interface support, boot ROM-enabled in-circuit programming, and dual-power-supply architecture (VDD/VDDO = 3.3 V, VCCP = 5 V) for isolated I/O drive capability.

Technical Context

The TMS320LF2403APAGS implements a static CMOS-based TMS320C2xx DSP core with 25-ns instruction cycle time at 40 MHz, supporting code compatibility with TMS320F243/F241/C242 while adding enhanced peripheral integration. Its event manager A (EVA) provides hardware-synchronized PWM generation, programmable deadband insertion, and quadrature encoder pulse (QEP) input decoding for real-time position feedback.

On-chip peripherals include a twin-autosequencing 10-bit ADC with external trigger capability from EVA, a full-duplex SCI for host communication, a 16-bit SPI interface, and a Controller Area Network (CAN) 2.0B module - all sharing multiplexed GPIO pins with configurable pull-up and input qualification to suppress noise-induced false triggers.

Key Specifications

Pinout & Package

64-pin Low-Profile Quad Flat Package (TQFP, PAG suffix), 10 mm × 10 mm body, 0.5 mm pitch, exposed thermal pad (non-electrical). Pin functions validated per SPRS145L Rev. September 2007, Table 2 and PAG package diagrams (pages 9, 11–13).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320LF2403APAGS, the LF2406APZ enables multi-axis coordination but increases PCB area and thermal management complexity, while the LC2403APAG reduces unit cost and eliminates flash wear concerns at the expense of field update capability.

Availability

TMS320LF2403APAGS is available at Aetrix Electronics and suitable for brushless DC motor drives, industrial servo amplifiers, solar inverters, and uninterruptible power supplies requiring stable component supply across extended product lifecycles.

Supply support for TMS320LF2403APAGS 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 over 50 years of innovation in industrial and automotive control ICs.

The TMS320C2000™ platform - including the TMS320LF2403APAGS - was designed specifically for real-time digital power and motor control, integrating precision analog front-ends, deterministic PWM subsystems, and industry-standard communications into a single chip.

FAQ

What is the maximum operating frequency and instruction throughput of the TMS320LF2403APAGS?

The TMS320LF2403APAGS operates at a maximum instruction cycle time of 25 ns, delivering 40 million instructions per second (MIPS) at 40 MHz. This throughput is sustained across all on-chip peripherals, including the event manager and ADC, enabling deterministic execution of complex motor control algorithms within tight timing windows.

Does the TMS320LF2403APAGS support in-system programming, and what interfaces enable it?

Yes, the TMS320LF2403APAGS supports in-system programming via its on-chip 256-word boot ROM, activated by asserting BOOT_EN/XF during reset. Programming is performed through the SCI (UART) interface using TI's standard bootloader protocol - no external programmer is required for field firmware updates.

How many PWM outputs does the TMS320LF2403APAGS provide, and are they independently configurable?

The TMS320LF2403APAGS provides six PWM outputs (PWM1–PWM6) via its single Event Manager A (EVA) module. Each channel supports independent center- or edge-aligned mode, programmable deadband (0–15.5 µs resolution), and synchronous ADC triggering - enabling full 3-phase inverter control with shoot-through protection.

What analog input capability does the TMS320LF2403APAGS offer, and how is it synchronized with PWM?

The TMS320LF2403APAGS integrates a 10-bit ADC with eight multiplexed analog inputs (ADCIN00–ADCIN07) and a minimum conversion time of 500 ns. Conversion is triggered automatically by EVA timer events (e.g., PWM center-aligned zero-crossing), ensuring precise current sampling aligned to inverter switching states.

Is the TMS320LF2403APAGS pin-compatible with other devices in the TMS320x240xA family?

Yes, the TMS320LF2403APAGS shares the same 64-pin TQFP (PAG) footprint and pin mapping with TMS320LC2403APAG and TMS320LC2402APAG. However, CAN and SPI signals are not present on LC2402A, and boot ROM functionality is exclusive to Flash variants - functional compatibility requires verification against specific peripheral usage.