Texas Instruments TMS5702135DZWTQQ1

Overview

TMS5702135DZWTQQ1 from Texas Instruments is an automotive-grade 32-bit RISC flash microcontroller with dual lockstep ARM Cortex-R4F CPUs, 2MB ECC-protected flash, 256KB ECC-protected RAM, and integrated safety features including BIST, voltage/clock monitoring, and error signaling. It delivers 298 DMIPS at 180 MHz and targets ASIL-D–compliant braking, steering, and battery management systems.

For engineers reviewing the TMS5702135DZWTQQ1 datasheet, TMS5702135DZWTQQ1 pinout, TMS5702135DZWTQQ1 application, or TMS5702135DZWTQQ1 equivalent, key selection criteria include functional safety certification (ISO 26262), dual-CPU lockstep execution, FlexRay/CAN/LIN interface support, N2HET timer resolution, and ZWT package thermal performance in extended temperature range (−40°C to 125°C).

Technical Context

The TMS5702135DZWTQQ1 implements a safety-critical architecture with two identical ARM Cortex-R4F cores executing identical instructions in lockstep, with continuous comparison logic detecting divergence. Its FMPLL provides system clock up to 180 MHz, while a separate nonmodulating PLL drives the FlexRay controller at 10 Mbps per channel.

Peripheral safety is enforced via dedicated MPUs for DMA, HTU, FTU, and N2HET modules; ECC on flash and RAM; parity protection on MibADC buffers, message RAM, and peripheral memories; and loopback-capable I/O for diagnostic coverage. The ESM monitors all fault sources and asserts the nERROR pin or triggers interrupts based on configurable severity levels.

Key Specifications

Pinout & Package

337-ball NFBGA (ZWT) package with 0.8 mm ball pitch, 16.0 mm × 16.0 mm body size, and thermal pad for enhanced heat dissipation in automotive applications operating from −40°C to 125°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar safety microcontroller applications.

Compared with TMS5702135DZWTQQ1, the TMS570LS3135ZWT offers greater flash headroom for layered safety software, while the SPC574K72E5 adds hardware-accelerated security functions-neither is pin-compatible, but both target overlapping ASIL-D automotive control applications requiring functional safety and real-time determinism.

Availability

TMS5702135DZWTQQ1 is available at Aetrix Electronics and suitable for braking systems, electric power steering, and battery management systems requiring stable component supply across long production lifecycles and automotive qualification standards.

Supply support for TMS5702135DZWTQQ1 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, and communications markets.

The TMS570 Hercules™ family is designed specifically for functional safety–critical automotive applications, with architecture and certification support targeting ISO 26262 ASIL-D compliance in real-time control systems.

FAQ

What safety certifications apply to the TMS5702135DZWTQQ1?

The TMS5702135DZWTQQ1 is qualified for automotive use per AEC-Q100 Grade 1 and supports ISO 26262 ASIL-D development workflows. Texas Instruments provides safety manuals, FMEDA reports, and diagnostic software libraries specifically for TMS5702135DZWTQQ1 to enable certified safety case development. No third-party certification body issues a standalone "ASIL-D certified" label-the device is a component used within a certified system.

Does the TMS5702135DZWTQQ1 support external memory expansion?

Yes, the TMS5702135DZWTQQ1 includes a 16-bit External Memory Interface (EMIF) supporting synchronous DRAM (SDRAM), asynchronous SRAM, and FPGA peripherals. The EMIF features dedicated address/data buses, chip-select lines, and control signals (nRAS, nCAS, nWE), with MPU protection ensuring only authorized masters access external memory regions.

How does the N2HET module enhance real-time control in the TMS5702135DZWTQQ1?

The TMS5702135DZWTQQ1 integrates two N2HET modules-N2HET1 with 32 channels and N2HET2 with 18 channels-that operate independently of the main CPU. Each supports programmable PWM, input capture, and GPIO with hardware angle generation, enabling precise motor control, sensor sampling, and actuator timing without CPU overhead or jitter.

What is the role of the FlexRay Transfer Unit (FTU) in the TMS5702135DZWTQQ1?

The FTU in the TMS5702135DZWTQQ1 autonomously transfers FlexRay frame data between the FlexRay controller's message RAM and main memory without CPU involvement. It operates under MPU protection, ensuring memory access isolation, and supports scatter-gather DMA-style transfers to reduce latency and improve determinism in time-triggered networks.

Can the TMS5702135DZWTQQ1 operate across the full automotive temperature range?

Yes, the TMS5702135DZWTQQ1 is rated for operation from −40°C to +125°C ambient temperature, validated per AEC-Q100 stress test conditions. Its thermal design-including ZWT package thermal pad, voltage/clock monitors, and junction temperature derating guidance-ensures reliable function in under-hood and transmission-control environments.