Texas Instruments TMS320LF2402APGAR

Overview

TMS320LF2402APGAR from Texas Instruments is a 32-bit fixed-point DSP controller optimized for digital motor control, featuring a TMS320C2xx CPU core, 8-channel 10-bit ADC with 500-ns minimum conversion time, single Event Manager (EVA) with 6 PWM outputs and 3 capture inputs, and 8 KB on-chip Flash memory. It operates at 40 MIPS with 25-ns instruction cycle time and supports 3.3-V low-power operation in industrial temperature range (−40°C to 85°C).

For engineers reviewing the TMS320LF2402APGAR datasheet, TMS320LF2402APGAR pinout, TMS320LF2402APGAR application, or TMS320LF2402APGAR equivalent, key selection criteria include its 64-pin QFP package, absence of CAN and SPI peripherals, dual-access RAM architecture, boot ROM support, and GPIO-configurable peripheral pins for embedded motion control systems.

Technical Context

The TMS320LF2402APGAR implements a static CMOS C2xx DSP core with instruction-set compatibility to TMS320F240/F241/F243/C242 devices and module-level compatibility with F240. Its Event Manager A integrates two 16-bit general-purpose timers, six PWM channels with programmable deadband, three capture units with input qualifier circuitry, and synchronized ADC triggering.

It uses a PLL-based clock generator supporting up to 40-MHz internal operation from external crystal or clock source, includes JTAG-compliant scan-based emulation per IEEE 1149.1 (boundary scan not supported), and features five external interrupts including PDPINTA for emergency PWM shutdown - all configured via shared GPIO pins with reset-default functions.

Key Specifications

Pinout & Package

64-pin QFP (PG) package with 0.8-mm lead pitch; requires separate analog (VCCA/VSSA) and digital (VDD/VSS) power domains and dedicated ADC reference pins (VREFHI/VREFLO). All GPIOs default to input mode after reset.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320LF2402APGAR, the LF2403APAG offers expanded memory and dual-EV capability for multi-axis systems, while the LC2402APAG trades Flash flexibility for lower unit cost and guaranteed firmware immutability - both retain identical 64-pin QFP packaging and core motor-control peripherals.

Availability

TMS320LF2402APGAR is available at Aetrix Electronics and suitable for brushless DC motor drives, HVAC blower controllers, stepper indexer modules, and uninterruptible power supply inverters requiring stable component supply across extended industrial lifecycles.

Supply support for TMS320LF2402APGAR 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 DSP innovation.

The TMS320C2000™ platform - including the TMS320LF2402APGAR - was designed specifically for real-time digital control of power electronics, motor drives, and energy conversion systems.

FAQ

What is the maximum operating frequency of the TMS320LF2402APGAR?

The TMS320LF2402APGAR operates at a maximum instruction rate of 40 MIPS with a 25-ns instruction cycle time, achieved using an internal PLL that multiplies an external 10-MHz crystal or clock input. Its core clock runs at 40 MHz, and all peripherals-including the ADC, PWM, and timers-are synchronized to this clock domain. The device does not support overclocking beyond this specification.

Does the TMS320LF2402APGAR include CAN or SPI interfaces?

No, the TMS320LF2402APGAR 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 excluded from LF2402A and LC2402A variants. Only SCI (asynchronous UART) is integrated across all 240xA devices.

How much Flash memory does the TMS320LF2402APGAR contain, and is it segmented?

The TMS320LF2402APGAR contains 8 K words × 16 bits of on-chip Flash memory, organized in four sectors (4K/12K/12K/4K layout is for larger variants; LF2402A uses only first two sectors totaling 8K). This Flash supports in-system programming via the boot ROM's SCI bootloader and includes password-based code-security to prevent unauthorized firmware extraction or modification.

What is the role of the PDPINTA pin on the TMS320LF2402APGAR?

The PDPINTA pin on the TMS320LF2402APGAR is a dedicated falling-edge-triggered power drive protection interrupt that immediately places all six EVA PWM outputs into high-impedance state upon detection of overcurrent, overvoltage, or thermal fault. Its direct hardware linkage to the PWM logic ensures sub-microsecond response - critical for protecting IGBTs or MOSFETs in motor drive half-bridges without CPU intervention.

Can the TMS320LF2402APGAR operate with a single 3.3-V supply, or are separate analog/digital rails required?

The TMS320LF2402APGAR requires two independent 3.3-V supplies: VDD/VSS for digital logic and VCCA/VSSA for the analog subsystem (ADC and reference circuitry). Although nominally same voltage, TI mandates physical separation of analog and digital power planes and recommends ferrite-bead filtering between them - failure to isolate VCCA/VSSA degrades ADC effective resolution below 10 bits due to digital switching noise coupling.