TMS320LF6APZS - 16-Bit 40MHz DSP MCU | Texas Instruments
MPN: TMS320LF2406APZS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $19.9 | $19.90 |
| 10 | $17.95 | $179.50 |
| 100 | $15.5 | $1,550.00 |
| 500 | $12.95 | $6,475.00 |
| 1,000 | $10.85 | $10,850.00 |
TMS320LF2406APZS Overview
A digital signal processor (DSP) is a specialized microprocessor whose architecture is optimized for numeric-intensive algorithms such as the multiply-accumulate (MAC) operations that dominate motor-control, audio, and power-conversion math. The C2000 family sits at the intersection of microcontrollers and DSPs - inheriting deterministic interrupt and timer/peripheral infrastructure from the MCU world while exploiting the Harvard bus and hardware MAC of a DSP. Within the broader C2000 hierarchy, the LF240xA sits below the F28xx and F283xx floating-point generations and remains in production for cost-sensitive, fixed-point applications where the cycle budget comfortably fits within 40 MHz.
Key features of the TMS320LF2406A include an event manager module optimized for three-phase PWM generation with dead-band insertion, a 10-bit ADC with conversion time suitable for current-sensing loops, CAN 2.0B interface, serial communications interface (SCI) and SPI ports, and a watchdog timer. The integrated peripherals remove the need for external logic to drive inverters or to digitize phase currents, lowering total BOM cost. The Flash-based LF2406APZS variant supports in-system reprogramming via JTAG, simplifying firmware iteration.
Architecture-wise, the LF2406A uses a modified Harvard bus with separate program and data paths, six 16-bit auxiliary registers and an 8-level hardware stack, plus the C24x instruction set with single-cycle MAC. Power management includes 3.3V single-supply operation with on-chip voltage regulation, and several low-power modes are available. The 100-pin LQFP exposes GPIO, PWM channels, ADC inputs and serial buses while still fitting standard through-hole-friendly board outlines.
Typical applications include digital motor control (BLDC, PMSM, AC induction, SRM drives), uninterruptible power supplies, solar inverters, automotive body and powertrain sub-systems, industrial automation variable-frequency drives, and switching power supply digital control loops. The on-chip event manager and ADC are tuned for 3-phase space-vector modulation at switching frequencies up to tens of kHz.
When designing with the TMS320LF2406APZS, ensure that supply decoupling is placed within 5mm of each VDD/VSS pair, that analog and digital grounds are joined at a single point near the IC, and that JTAG lines are guarded against high-current switching traces. Compared with newer C2000 devices, code may need adaptation due to peripheral register differences.
This page synthesizes distributor pricing, same- and cross-brand drop-in alternatives, lifecycle context, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for TMS320LF2406APZS — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TMS320LF2406APZS (same form factor and footprint) — differing in Communication Interfaces, Package, Program Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TMS320LF2406APZAR
✅ Drop-In📋 Reference alternative (not in catalog)
TMS320LF2402APZS
✅ Drop-In📋 Reference alternative (not in catalog)
TMS320LF2403APZS
✅ Drop-In📋 Reference alternative (not in catalog)
TMS320LF2404APZS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TMS320LF2406APZS Maximum Ratings & Electrical Characteristics
| Manufacturer | Texas Instruments |
| Series | C2000 C24x |
| Core | C2xx DSP / 16-bit fixed-point |
| Clock Frequency (Max) | 40 MHz |
| Performance | 40 MIPS |
| Program Memory | 64 KB Flash (32K x 16) |
| Data Memory / RAM | 5 KB |
| Package | 100-pin LQFP (PZS), 14x14 mm |
| Mounting Type | Surface Mount |
| Supply Voltage | 3.3 V |
| ADC | On-chip 10-bit ADC |
| Communication Interfaces | CAN 2.0B, SCI (UART), SPI |
| PWM / Event Manager | Integrated EV module for 3-phase PWM with dead-band |
TMS320LF2406APZS Pin Configuration
| Pin 1 | ADCINB0 — ADC input channel B0 |
| Pin 14 | VSS — Ground |
| Pin 32 | VDD — Digital supply 3.3V |
| Pin 55 | XIN/XOUT — Crystal oscillator pins |
| Pin 76 | TCLKINA — Timer clock input A |
| Pin 99 | PWM1 — PWM output channel 1 |
| Pin 100 | VSS — Ground |
Typical Applications
TMS320LF2406APZS is suitable for 7 applications: Three-Phase AC Induction Motor Drive, Brushless DC (BLDC) / PMSM Servo Drive, Uninterruptible Power Supply (UPS) / Inverter, Digital Switching Power Supply Control, Automotive Body Electronics Control, Industrial PLC Motion Module / Servo Controller, Solar Photovoltaic Inverter / MPPT Controller.
Three-Phase AC Induction Motor Drive
The TMS320LF2406APZS drives three-phase induction motors in variable-frequency drives by generating space-vector PWM with the integrated Event Manager at switching frequencies of 4-20 kHz. The 40 MHz core sustains current-control loops at 10-20 kHz, while the on-chip 10-bit ADC samples phase currents synchronously to the PWM reload event. The C24x core executes single-cycle MAC operations for Park/Clarke transforms within microseconds, leaving MIPS headroom for the CAN stack and supervisory state machine. The 64 KB Flash holds control firmware plus calibration tables, and CAN 2.0B enables integration with industrial fieldbus systems.
Recommended
Brushless DC (BLDC) / PMSM Servo Drive
For servo-position control of BLDC and PMSM motors, the LF2406APZS executes field-oriented control (FOC) and trapezoidal commutation in a single chip, using the Event Manager to generate complementary PWM with programmable dead-band to prevent shoot-through. The integrated QEP (quadrature encoder pulse) interface decodes shaft-position sensors directly, closing the position loop without external counters. The on-chip ADC samples DC-bus current and back-EMF, while CAN/SCI ports expose drive parameters for supervisory controllers. The 100-LQFP package gives ample GPIO and PWM channels for multi-axis expansion.
Recommended
Uninterruptible Power Supply (UPS) / Inverter
In a UPS or off-grid inverter, the TMS320LF2406APZS implements the digital control loop for a DC-AC inverter: ADC sensing of bus voltage and output current, Event Manager generating SPWM or SVPWM, and an SCI link for remote monitoring. The 5 KB RAM supports a state machine plus soft-start ramps and MPPT logic for solar variants, while 64 KB Flash accommodates the firmware and tables. The 16-bit C24x core handles RMS calculation for metering within a single cycle. CAN connectivity supports paralleling in three-phase UPS modules.
Recommended
Digital Switching Power Supply Control
Digitally controlled SMPS designs use the LF2406APZS as the primary controller, generating PWM at tens of kHz, closing voltage and current mode control loops, and adapting to load transients in firmware. The 40 MHz core executes 1-2 poles/zeros of compensation per PWM cycle with budget remaining for input-voltage feed-forward and soft-start. The CAN/SCI interface exposes telemetry and accepts firmware updates, and the on-chip ADC samples sensed currents and the regulated output with synchronous sampling to the switching frequency.
Recommended
Automotive Body Electronics Control
Automotive body and powertrain sub-systems (electronic power steering, body controllers, brush motors for HVAC flaps, lighting controllers) leverage the LF2406APZS for its on-chip CAN 2.0B, SCI, and robust PWM peripherals. The 16-bit core handles LIN-to-CAN gateway logic, while the EV module drives multiple brushed-DC loads at variable duty. The 100-LQFP footprint is suitable for under-dash ECUs; operating-temperature grade varies by suffix. For new designs, consider TMS320F28379SPTPS (C2000 family with floating-point).
Recommended
Industrial PLC Motion Module / Servo Controller
Used as a drop-in DSP co-processor or as the main controller in industrial PLC motion modules, the TMS320LF2406APZS handles trajectory planning, position-loop control and host-side communication. The hardware MAC per cycle enables cubic-interpolation trajectory profiles that simpler MCUs cannot match at 40 MHz. Through CAN and SCI it exchanges set-points with the host PLC, while the EV module drives the local power stage. The 100-LQFP footprint drops onto legacy motion-control boards designed for this device, preserving layout reuse.
Recommended
Solar Photovoltaic Inverter / MPPT Controller
In string inverters and MPPT charge controllers, the LF2406APZS implements perturb-and-observe or incremental-conductance MPPT, switching the boost converter's PWM duty every cycle to track panel maximum power. The on-chip ADC samples PV voltage and current synchronously, while the EV module drives the boost or interleaved-FULL-bridge converter with dead-band protection. The C24x core monitors grid sync (via SCI to a separate grid-tie IC) and performs safety turn-off sequences. The 100-LQFP is well-suited for outdoor inverter enclosures.
Recommended
Recommended Products Summary
Engineering reference data for TMS320LF2406APZS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TMS320LF2406APZAR | TMS320LF2402APZS | TMS320LF2403APZS | TMS320LF2404APZS |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 100-LQFP (PZS, 14x14) | 100-LQFP (PZA, 14x14) - same | 100-LQFP (PZ, 14x14) - same | 100-LQFP (PZ, 14x14) - same | 100-LQFP (PZ, 14x14) - same |
| Core | C2xx DSP 16-bit | C2xx DSP 16-bit | C2xx DSP 16-bit | C2xx DSP 16-bit | C2xx DSP 16-bit |
| Clock Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Program Flash | 64 KB | 64 KB | 32 KB [verify] | 32 KB [verify] | 32 KB [verify] |
| CAN 2.0B | Yes | Yes | Yes | Yes | Yes |
| Carrier / Packaging | Tray | Reel (large) | Tray | Tray | Tray |
Key Differentiators
- Carrier / packaging flexibility (vs TMS320LF2406APZAR)
- Highest Flash density in the LF240xA family (vs TMS320LF2402APZS / TMS320LF2403APZS)
- Mature C24x ecosystem at low unit cost (vs TMS320F28379SPTPS (newer C2000))
Design Notes
The TMS320LF2406APZS requires a well-regulated 3.3V supply. Place a 10 uF bulk tantalum or ceramic capacitor and a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pair to suppress switching-induced voltage spikes. The integrated voltage regulator simplifies the analog supply rail, but high-current loads (driven by GPIOs) should be isolated from the MCU ground with a ferrite bead to prevent ground-bounce corruption of the on-chip ADC readings.
On a 100-pin LQFP layout, route the analog ADC inputs and digital control traces on separate PCB layers or areas joined at a single ground point near the IC. Keep high-current switching traces (gate drivers, relay coils) at least 10 mm away from the analog inputs to avoid conducted EMI. Add a guard ring around the ADC input pins connected to quiet ground to reduce pickup, and ensure the crystal load capacitors are placed within 2 mm of the XIN/XOUT pins per the LF2406A datasheet layout guidance.
The C24x MAC unit performs single-cycle multiply-accumulate and is sensitive to memory-wait states. To sustain 40 MIPS, place code and data on-chip (in Flash and the 5 KB RAM) wherever possible; external memory accesses introduce wait states. Enable Flash pipelining if the toolchain does not do so by default, and use the Harvard-bus dual-access feature to allow simultaneous instruction fetches and data reads in interrupt-dense control loops.
Avoid relying on the internal ADC's absolute accuracy for production-grade metering - its 10-bit resolution and uncalibrated channels leave 1-2 LSB drift across temperature. Use an external 12-/16-bit ADC or apply per-channel two-point calibration in firmware. Also, watch for JTAG lock-up when the watchdog timer expires during Flash programming - drive the watchdog reset input before initiating JTAG communications.
Compliance Information
RoHS / REACH / lead-free / halogen-free status not confirmed in the verified data; verify via the manufacturer datasheet or the latest TI product declaration. AEC-Q100 not qualified as of the official LF2406A datasheet.
