Texas Instruments TMS5702134CZWTQQ1

Overview

TMS5702134CZWTQQ1 from Texas Instruments is a safety-certified 32-bit ARM Cortex-R4F microcontroller for automotive ASIL-D and IEC 61508 SIL-3 applications, featuring dual lockstep CPUs, 2MB flash with ECC, 256KB RAM with ECC, three DCAN controllers (up to 1 Mbps), and two 12-bit MibADCs (24-channel total). It operates at up to 180 MHz with 1.2 V core supply and supports real-time control in braking systems and electric power steering.

For engineers reviewing the TMS5702134CZWTQQ1 datasheet, TMS5702134CZWTQQ1 pinout, TMS5702134CZWTQQ1 application, or TMS5702134CZWTQQ1 equivalent, key selection criteria include ASIL-D compliance, integrated BIST and error signaling, N2HET timer coprocessor support, FMPLL clocking with slip detection, and ZWT package compatibility with 337-ball NFBGA footprint.

Technical Context

The TMS5702134CZWTQQ1 implements a dual-CPU lockstep architecture with hardware BIST for CPU and SRAM, ECC on flash and RAM, and parity protection across peripheral memories including MibADC buffers and DMA control RAM. Its safety monitoring includes voltage/clock supervision and an Error Signaling Module (ESM) that drives the dedicated nERROR pin upon fault detection.

It integrates two Next Generation High-End Timer (N2HET) modules - N2HET1 with 32 programmable channels and N2HET2 with 18 - each paired with a dedicated HTU and MPU for safe DMA-like transfers. The device uses a Frequency-Modulated PLL (FMPLL) with built-in slip detector and a separate non-modulating PLL for robust clock domain management in noisy automotive environments.

Key Specifications

Pinout & Package

The TMS5702134CZWTQQ1 is housed in a 337-ball NFBGA (ZWT) package with 0.8 mm ball pitch, designed for automotive PCB reliability and thermal management. Ball mapping follows TI's standardized ZWT pinout for the TMS570LS21x4 family.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS5702134CZWTQQ1, the TMS570LS3134ZWT offers greater flash capacity while maintaining full pin and functional compatibility, whereas the SPC574K72E5 requires PCB redesign and toolchain migration but provides integrated power management and alternative safety certification paths.

Availability

TMS5702134CZWTQQ1 is available at Aetrix Electronics and suitable for braking systems, electric power steering, and battery management systems requiring stable component supply across long-life automotive programs.

Supply support for TMS5702134CZWTQQ1 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 automotive ICs, with decades of experience in functional safety and automotive qualification.

The TMS570 Hercules™ family was designed specifically for ASIL-D and SIL-3 safety-critical applications, integrating hardware redundancy, memory protection, and diagnostic accelerators to reduce software safety certification effort.

FAQ

What safety certifications apply to the TMS5702134CZWTQQ1?

The TMS5702134CZWTQQ1 is qualified to AEC-Q100 Grade 1 and supports ISO 26262 ASIL-D and IEC 61508 SIL-3 system-level certification. Its dual lockstep CPU, ECC memory, BIST logic, and ESM module provide the hardware foundation required for safety case evidence. TI supplies safety manuals, FMEDA reports, and diagnostic software libraries specifically for TMS5702134CZWTQQ1 to accelerate customer certification.

Does the TMS5702134CZWTQQ1 support external memory expansion?

Yes, the TMS5702134CZWTQQ1 includes a 16-bit External Memory Interface (EMIF) supporting asynchronous SRAM, NOR flash, and SDRAM devices. This interface enables off-chip code execution, large data logging, or OTA update storage without consuming internal flash. Pin assignments for EMIF signals (EMIF_ADDR[21:0], EMIF_DATA[15:0], EMIF_nCS[4:2], etc.) are defined in the ZWT package ball map and require careful layout for signal integrity in automotive environments.

How does the N2HET module enhance real-time control in the TMS5702134CZWTQQ1?

The TMS5702134CZWTQQ1 integrates two N2HET modules - N2HET1 (32 channels) and N2HET2 (18 channels) - each with dedicated HTU and MPU. These timers execute timing sequences independently of the CPU using a microcoded instruction set, enabling precise PWM generation, input capture, and GPIO toggling with nanosecond resolution. This offloads deterministic timing tasks from the Cortex-R4F, preserving CPU bandwidth for higher-layer control algorithms in applications like EPS or braking.

Can the TMS5702134CZWTQQ1 operate with multiple CAN networks simultaneously?

Yes, the TMS5702134CZWTQQ1 features three independent DCAN controllers compliant with CAN 2.0B protocol, each supporting bit rates up to 1 Mbps. They operate on separate message RAMs and can be configured for distinct CAN IDs, filters, and acceptance masks. This allows concurrent communication on chassis, powertrain, and body networks - for example, receiving wheel speed data via DCAN1 while transmitting torque commands via DCAN2 and diagnostics via DCAN3 - all without software arbitration overhead.

What is the role of the FMPLL and slip detector in the TMS5702134CZWTQQ1 clock system?

The TMS5702134CZWTQQ1 uses a Frequency-Modulated PLL (FMPLL) to generate high-frequency clocks from a low-speed crystal or oscillator. Its integrated slip detector continuously monitors output frequency against expected values and triggers an ESM fault if deviation exceeds ±1%, preventing undetected clock failures. This hardware-level protection complements the separate non-modulating PLL and voltage/clock monitors to meet ASIL-D timing fault detection requirements without CPU polling.