Texas Instruments TMS320LF2402APGS

Overview

TMS320LF2402APGS from Texas Instruments is a 32-bit fixed-point DSP controller optimized for digital motor control, featuring a 40-MIPS C2xx CPU core, 8-channel 10-bit ADC with 500-ns minimum conversion time, single Event Manager (EVA) with 6 PWM outputs and 3 capture units, and 3.3-V Flash-based memory architecture with 8K words of on-chip Flash and 512 words of SARAM. It operates in industrial temperature range (−40°C to 85°C) and targets brushless DC and stepper motor drive systems.

For engineers reviewing the TMS320LF2402APGS datasheet, TMS320LF2402APGS pinout, TMS320LF2402APGS application, or TMS320LF2402APGS equivalent, key selection criteria include its 64-pin QFP (PG) package, absence of CAN and SPI peripherals, dual-access RAM configuration, boot ROM support, and compatibility with TI's Code Composer Studio™ development ecosystem.

Technical Context

The TMS320LF2402APGS implements the TMS320C2xx DSP CPU core with static CMOS technology enabling 25-ns instruction cycle time at 40 MHz. Its single Event Manager (EVA) integrates two 16-bit general-purpose timers, six PWM channels with programmable deadband, three capture units with input qualifier circuitry, and synchronized A-to-D conversion triggering.

It features a PLL-based clock generator, JTAG-compliant scan-based emulation per IEEE 1149.1, and five external interrupts including PDPINTA for emergency PWM shutdown. Power management includes three power-down modes and independent peripheral power gating.

Key Specifications

Pinout & Package

Package: 64-pin QFP (PG), RoHS-compliant, body size 14.0 mm × 14.0 mm × 2.35 mm, lead pitch 0.8 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320LF2402APGS, the LF2403APAG offers expanded analog sensing headroom while maintaining identical control architecture, whereas the LC2402APAG trades reprogrammability and security for unit-cost reduction in mature, volume OEM programs.

Availability

TMS320LF2402APGS is available at Aetrix Electronics and suitable for brushless DC motor drives, stepper motion controllers, and industrial power converter designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TMS320LF2402APGS 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 connectivity technologies, with decades of leadership in DSP and motor control solutions.

The TMS320LF240xA family was engineered specifically for cost-sensitive, high-reliability digital motor control applications-integrating event managers, precision ADCs, and Flash-based programmability into a single chip to replace multi-component MCU+peripheral designs.

FAQ

What is the maximum ADC sampling rate achievable with the TMS320LF2402APGS?

The TMS320LF2402APGS achieves a minimum 500-ns conversion time per 10-bit sample, enabling up to 2 MSPS aggregate throughput when using autosequencing across all 8 channels. In practice, with EVA timer-triggered conversions and minimal overhead, sustained sampling rates of 1.2–1.5 MSPS are attainable for closed-loop motor current control in real-world implementations of the TMS320LF2402APGS.

Does the TMS320LF2402APGS support CAN or SPI communication interfaces?

No, the TMS320LF2402APGS does not include CAN or SPI peripherals. Per the official SPRS145L datasheet, CAN is available only on LF2407A/LF2406A/LF2403A, and SPI is present on LF2407A/LF2406A/LF2403A/LC2404A/LC2403A-but explicitly omitted from LF2402A and LC2402A variants. The TMS320LF2402APGS provides only SCI (asynchronous serial) for host communication.

What is the function of the BOOT_EN/XF pin on the TMS320LF2402APGS?

The BOOT_EN/XF pin on the TMS320LF2402APGS is an active-low input that enables boot ROM execution on device reset. When asserted low, it directs the TMS320LF2402APGS to begin execution from the internal 256-word boot ROM containing the SCI/SPI bootloader-essential for in-circuit Flash programming. It is unavailable on ROM-based LC240xA devices and functions as XF (external flag) in user code after boot.

How many PWM outputs does the TMS320LF2402APGS provide, and what are their capabilities?

The TMS320LF2402APGS provides six dedicated PWM outputs (PWM1–PWM6) through its single Event Manager A (EVA). These support center-aligned or edge-aligned modes, programmable deadband insertion (0–15 × TCLK), and forced high-impedance shutdown via PDPINTA. All six outputs are individually configurable for motor phase control, gate driver signaling, or general-purpose timing in the TMS320LF2402APGS.

Is the TMS320LF2402APGS pin-compatible with other devices in the LF240xA family?

The TMS320LF2402APGS uses a 64-pin QFP (PG) package, which shares footprint and pinout compatibility only with the TMS320LC2402APAG (64-pin TQFP PAG) and TMS320LF2403APAG (64-pin TQFP PAG)-but not with the 100-pin or 144-pin variants. Pin functions match across PG/PAG packages for shared signals (e.g., PWM1–PWM6, ADCIN00–ADCIN07), though LC2402A lacks BOOT_EN and has NC on VCCP.