Texas Instruments TMS320LF2403APAG4

Overview

TMS320LF2403APAG4 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 channels and 3 capture inputs, and integrated 10-bit ADC with 8 multiplexed analog inputs - deployed in brushless DC and stepper motor drives requiring real-time PWM timing and synchronized analog acquisition.

For engineers reviewing the TMS320LF2403APAG4 datasheet, TMS320LF2403APAG4 pinout, TMS320LF2403APAG4 application, or TMS320LF2403APAG4 equivalent, key selection criteria include its 64-pin TQFP package, CAN 2.0B interface support, 3.3-V operation, boot ROM-enabled in-circuit programming, and event-manager–driven deadband generation for IGBT gate drive safety.

Technical Context

The TMS320LF2403APAG4 implements a static CMOS-based TMS320C2xx DSP core with 25-ns instruction cycle time at 40 MHz, supporting code compatibility with TMS320F240/F241/F243/C242 families. Its EVA module provides two 16-bit general-purpose timers, six PWM outputs with programmable deadband, three capture units with input qualifier, and quadrature encoder interface logic.

It integrates a 10-bit ADC with 500-ns minimum conversion time, twin 8-state autosequencers triggered by EVA events, and dual communication interfaces: SCI (asynchronous) and SPI (synchronous). The device includes PLL-based clock generation, JTAG-compliant scan-based emulation (IEEE 1149.1), and five external interrupts including PDPINTA for emergency PWM shutdown.

Key Specifications

Pinout & Package

64-pin TQFP (PAG) package with exposed thermal pad; 3.3-V supply (VDD/VDDO), analog supply (VCCA/VSSA), and dedicated ADC reference pins (VREFHI/VREFLO) require separate low-noise routing per TI design guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320LF2406APZ, the TMS320LF2403APAG4 offers lower system cost and smaller footprint for single-motor applications; versus TMS320LC2403APAG, it retains field-programmability and secure firmware updates essential for development and iterative deployment.

Availability

TMS320LF2403APAG4 is available at Aetrix Electronics and suitable for brushless DC motor drives, stepper motion controllers, solar charge inverters, and industrial VFD modules requiring stable component supply across extended temperature ranges (−40°C to 85°C).

Supply support for TMS320LF2403APAG4 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 systems.

The TMS320C2000™ platform - including the TMS320LF2403APAG4 - was designed specifically for real-time digital power and motor control, integrating high-speed DSP computation with motor-specific peripherals like event managers and synchronized ADCs.

FAQ

What is the maximum operating frequency and instruction cycle time of the TMS320LF2403APAG4?

The TMS320LF2403APAG4 operates at a maximum CPU clock frequency of 40 MHz, delivering 40 million instructions per second (MIPS) with a 25-ns instruction cycle time. This performance level enables sub-microsecond response in motor control loops, and the device achieves this using high-performance static CMOS technology with 3.3-V core and I/O supply.

Does the TMS320LF2403APAG4 support CAN communication, and what version is implemented?

Yes, the TMS320LF2403APAG4 integrates a Controller Area Network (CAN) module compliant with ISO 11898-1 and CAN 2.0B protocol specifications. It supports both standard (11-bit) and extended (29-bit) identifier frames, enabling robust communication in distributed motor control networks - confirmed in the SPRS145L datasheet section "Controller Area Network (CAN) Module".

How many PWM outputs does the TMS320LF2403APAG4 provide, and are they configurable for deadband insertion?

The TMS320LF2403APAG4 provides six PWM outputs via its single Event Manager A (EVA) module. All six channels support programmable deadband generation - adjustable in 12.5-ns steps up to 15.5 µs - to prevent shoot-through faults in half-bridge power stages. This feature is hardware-implemented and requires no CPU overhead.

What is the ADC configuration of the TMS320LF2403APAG4, and how is it synchronized with PWM events?

The TMS320LF2403APAG4 features a 10-bit analog-to-digital converter with eight multiplexed input channels (ADCIN00–ADCIN07) and a minimum conversion time of 500 ns. It includes twin 8-state autosequencers that can be triggered directly by EVA events (e.g., PWM zero-crossing or period match), enabling precise synchronous sampling without CPU polling or interrupt latency.

Is the TMS320LF2403APAG4 pin-compatible with other devices in the LF240xA family, and which packages share the same footprint?

Yes, the TMS320LF2403APAG4 uses the 64-pin TQFP (PAG) package and is pin-compatible with TMS320LC2403APAG and TMS320LC2402APAG. All share identical mechanical dimensions, thermal pad layout, and pin assignments for power, ground, ADC, and EVA peripherals - allowing direct substitution in ROM-based or Flash-based designs where firmware and feature set align.