Texas Instruments TMS320LF2403APAGA

Overview

TMS320LF2403APAGA from Texas Instruments is a 32-bit fixed-point DSP controller optimized for digital motor control, featuring a TMS320C2xx CPU core, 25-ns instruction cycle (40 MHz), 16K-word on-chip Flash memory, dual-event manager (EVA only), and integrated 10-bit ADC with 8-channel analog input. It operates at 3.3 V and supports CAN 2.0B and SCI interfaces in a 64-pin TQFP package.

For engineers reviewing the TMS320LF2403APAGA datasheet, TMS320LF2403APAGA pinout, TMS320LF2403APAGA application, or TMS320LF2403APAGA equivalent, key selection criteria include PWM channel count (6), ADC conversion time (500 ns), Flash security feature, CAN interface presence, and 64-pin PAG package compatibility with space-constrained motor drive PCBs.

Technical Context

The TMS320LF2403APAGA implements a static CMOS-based C2xx DSP core with instruction-set compatibility to TMS320F240/F243 devices. Its Event Manager A provides two 16-bit general-purpose timers, six PWM outputs, three capture units, quadrature encoder interface, and programmable deadband logic for inverter gate-drive timing control.

The integrated 10-bit ADC supports autosequencing across eight inputs with twin 8-state sequencers triggered by EVA events, enabling synchronized sampling of current/voltage feedback in real-time motor control loops. The PLL-based clock module generates internal clocks up to 40 MHz from external crystal or oscillator input.

Key Specifications

Pinout & Package

64-pin TQFP (PAG) package with 0.5-mm pitch, 10 mm × 10 mm body size, and exposed thermal pad (non-electrical). Pin functions are multiplexed across GPIO, peripheral, and power domains; all power pins (VDD, VSS, VCCA, VSSA, VDDO, VSSO, VCCP) must be connected per datasheet layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320LF2406APZ, the TMS320LF2403APAGA offers smaller footprint and lower system cost but lacks dual EV support and SPI; compared with TMS320LC2403APAG, it retains field-upgradable Flash and CAN-critical for diagnostic-enabled motor drives requiring firmware updates and networked commissioning.

Availability

TMS320LF2403APAGA is available at Aetrix Electronics and suitable for brushless DC motor control, HVAC blower drives, stepper indexer modules, and UPS inverter systems requiring stable component supply, long-term lifecycle assurance, and automotive-grade temperature range compliance.

Supply support for TMS320LF2403APAGA 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 for industrial, automotive, and communications markets.

The TMS320LF240xA family was designed specifically for cost-sensitive, high-efficiency digital motor and motion control applications-integrating DSP performance with motor-specific peripherals like event managers and synchronized ADCs.

FAQ

What is the maximum operating frequency of the TMS320LF2403APAGA?

The TMS320LF2403APAGA operates at a maximum instruction cycle rate of 40 MHz, corresponding to a 25-ns instruction cycle time. This is achieved using an internal PLL that multiplies an external crystal or clock input (typically 4–20 MHz). The device maintains full functionality-including ADC sampling, PWM generation, and CAN messaging-at this rated frequency, as verified in the SPRS145L datasheet's electrical characteristics section.

Does the TMS320LF2403APAGA support SPI communication?

No, the TMS320LF2403APAGA does not support SPI communication. According to the TMS320x240xA Device Summary (Table 1, SPRS145L), SPI is available only on LF2407A, LF2406A, LC2404A, and LC2403A-but not on LF2403A. Pins SPICLK/IOPC4, SPISIMO/IOPC2, and SPISOMI/IOPC3 default to GPIO functionality on the TMS320LF2403APAGA.

How many PWM outputs does the TMS320LF2403APAGA provide?

The TMS320LF2403APAGA provides six PWM outputs via its single Event Manager A (EVA) module. These are PWM1 through PWM6, mapped to pins IOPA6, IOPA7, IOPB0–IOPB3 respectively. All six outputs support programmable deadband insertion, center/edge alignment, and emergency shutdown via the PDPINTA pin-enabling robust three-phase inverter control without external logic.

What is the ADC configuration of the TMS320LF2403APAGA?

The TMS320LF2403APAGA integrates a 10-bit analog-to-digital converter with eight multiplexed input channels (ADCIN00–ADCIN07), minimum conversion time of 500 ns, and twin 8-state autosequencers triggered by Event Manager A events. This configuration enables synchronized sampling of motor phase currents and DC-link voltage within a single PWM period, critical for real-time current-loop control in BLDC and induction motor drives.

Is the TMS320LF2403APAGA pin-compatible with other 240xA devices?

Yes, the TMS320LF2403APAGA is pin-compatible with the TMS320LC2403APAG and TMS320LC2402APAG in the 64-pin PAG package. However, it is not pin-compatible with 100-pin (PZ) or 144-pin (PGE) variants like LF2406A or LF2407A. Peripheral availability differs-for example, CAN is present on LF2403A but absent on LC2402A-so PCB design must verify signal mapping against the specific device's pin function table.