Texas Instruments TMS5702135CPGEQQ1

Overview

TMS5702135CPGEQQ1 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, parity-protected peripherals, and error signaling for ASIL-D systems. It targets brake control, electric power steering, and battery management in harsh environments.

For engineers reviewing the TMS5702135CPGEQQ1 datasheet, TMS5702135CPGEQQ1 pinout, TMS5702135CPGEQQ1 application, or TMS5702135CPGEQQ1 equivalent, key selection criteria include functional safety certification (ISO 26262), dual-CPU lockstep execution, FlexRay/CAN/LIN interface support, N2HET timer resolution, and PGE package compatibility with 144-pin LQFP footprint.

Technical Context

The TMS5702135CPGEQQ1 implements a dual-core lockstep architecture where both Cortex-R4F CPUs execute identical instructions and compare results in real time to detect transient faults. Its safety subsystem includes built-in self-test (BIST) for CPU and SRAM, ECC on flash and RAM, parity protection on peripheral memories, and dedicated Error Signaling Module (ESM) with external ERROR pin assertion.

It integrates two Next Generation High-End Timer (N2HET) modules-N2HET1 with 32 programmable channels and N2HET2 with 18 channels-each supported by a dedicated High-End Transfer Unit (HTU) and Memory Protection Unit (MPU). The device also features two 12-bit multibuffered ADCs (24 total channels), three DCAN controllers compliant with CAN 2.0B, and a dual-channel FlexRay controller with FTU-assisted data transfers.

Key Specifications

Pinout & Package

Package: LQFP-144 (PGE), 20.0 mm × 20.0 mm, 0.5 mm pitch, green RoHS-compliant. Pinout validated per TI SPNS164C Section 4.1 (PGE QFP Package Pinout).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS5702135CPGEQQ1, TMS570LS3135PGE offers +1MB flash for enhanced firmware flexibility within identical safety architecture and footprint, while SPC574S40E1 provides comparable ASIL-D capability with different core architecture and interface emphasis-making it suitable for CAN FD–focused designs rather than FlexRay-dependent systems.

Availability

TMS5702135CPGEQQ1 is available at Aetrix Electronics and suitable for braking systems, electric power steering, and battery management systems requiring stable component supply, long-term automotive lifecycle support, and ASIL-D functional safety compliance.

Supply support for TMS5702135CPGEQQ1 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, specializing in analog, embedded processing, and digital signal processing technologies for automotive, industrial, and communications markets.

The TMS570 Hercules™ family was designed specifically for ASIL-D and SIL-3 safety-critical applications, integrating hardware redundancy, memory protection, and real-time diagnostics to eliminate single points of failure in automotive control units.

FAQ

What safety certifications apply to the TMS5702135CPGEQQ1?

The TMS5702135CPGEQQ1 is qualified for automotive applications per AEC-Q100 Grade 1 and supports ISO 26262 ASIL-D development workflows. Its dual-CPU lockstep, ECC memory, BIST, and ESM are architected to meet FMEDA requirements for random hardware failure metrics. TI provides safety manuals, FIT rate data, and diagnostic coverage reports specifically for TMS5702135CPGEQQ1 to support certification evidence generation.

Does the TMS5702135CPGEQQ1 support FlexRay communication out of the box?

Yes, the TMS5702135CPGEQQ1 includes a dual-channel FlexRay controller compliant with FlexRay v2.1, capable of 10 Mbps per channel. It requires external bus drivers and proper termination but needs no external transceivers for basic PHY layer operation. The integrated FlexRay Transfer Unit (FTU) enables autonomous message transfers between FlexRay buffers and main memory without CPU intervention, ensuring deterministic timing for TMS5702135CPGEQQ1-based brake-by-wire systems.

How does the N2HET module enhance real-time performance in the TMS5702135CPGEQQ1?

The TMS5702135CPGEQQ1 integrates two N2HET modules-N2HET1 (32 channels) and N2HET2 (18 channels)-that operate independently of the main CPU. Each executes a reduced instruction set for precise PWM generation, input capture, and GPIO sequencing with sub-microsecond resolution. This offloads timing-critical tasks from the Cortex-R4F cores, reducing jitter and CPU load while maintaining deterministic behavior essential for motor control and sensor synchronization in TMS5702135CPGEQQ1 applications.

What is the role of the Error Signaling Module (ESM) in the TMS5702135CPGEQQ1?

The Error Signaling Module (ESM) in the TMS5702135CPGEQQ1 continuously monitors all internal safety-critical resources-including CPU lockstep mismatches, memory ECC double-bit errors, clock/voltage monitor faults, and peripheral parity failures. Upon detecting any fault, ESM can assert the dedicated nERROR pin low and/or generate an interrupt. This hardware-enforced response ensures immediate fail-safe action without relying on software polling, making it foundational to TMS5702135CPGEQQ1's ASIL-D compliance.

Can the TMS5702135CPGEQQ1 interface with external SDRAM or FPGA devices?

Yes, the TMS5702135CPGEQQ1 includes a 16-bit External Memory Interface (EMIF) supporting synchronous DRAM (SDRAM), asynchronous SRAM/ROM, and FPGA peripherals. It provides address/data buses, control signals (nRAS, nCAS, nWE), and clock outputs compatible with standard JEDEC SDRAM timing. This allows expansion of program memory, data buffers, or custom logic-enabling complex control algorithms and data logging in TMS5702135CPGEQQ1-based systems without compromising real-time performance.