Texas Instruments TMS5703137CZWTQQ1

Overview

TMS5703137CZWTQQ1 from Texas Instruments is an automotive-grade 32-bit RISC flash microcontroller with dual lockstep ARM Cortex-R4F CPUs, 3 MB ECC-protected flash, 256 KB ECC RAM, and integrated safety features including BIST, voltage/clock monitoring, and error signaling for ASIL-D systems. It delivers 298 DMIPS at 180 MHz and supports real-time control in braking systems, electric power steering, and battery management.

For engineers reviewing the TMS5703137CZWTQQ1 datasheet, TMS5703137CZWTQQ1 pinout, TMS5703137CZWTQQ1 application, or TMS5703137CZWTQQ1 equivalent, key selection criteria include ASIL-D compliance, dual-CPU lockstep operation, 3 MB flash with ECC, 10/100 Mbps Ethernet MAC, FlexRay dual-channel support, and N2HET timer co-processors for deterministic timing in safety-critical automotive subsystems.

Technical Context

The TMS5703137CZWTQQ1 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 dedicated Error Signaling Module (ESM) with external ERROR pin, built-in self-test (BIST) for CPU and SRAM, and parity protection across peripheral memories including 8 KB FlexRay message RAM and 64 mailbox registers.

Timing and communication are managed via two Next Generation High-End Timer (N2HET) modules - N2HET1 with 32 programmable channels and N2HET2 with 18 channels - each backed by dedicated HTU DMA engines and MPU-protected memory. The device integrates three DCAN controllers compliant with CAN 2.0B (up to 1 Mbps), one IEEE 802.3-compliant EMAC supporting MII/RMII/MDIO, and a dual-channel FlexRay controller with autonomous FTU transfers.

Key Specifications

Pinout & Package

The TMS5703137CZWTQQ1 is housed in a 337-ball NFBGA (ZWT) package with 0.8 mm ball pitch and 16.0 mm × 16.0 mm body size. Ball mapping supports full peripheral access including dual N2HET modules, EMAC, FlexRay, DCAN, and high-density GPIO routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS5703137CZWTQQ1, the TMS570LS3135ZWT omits Ethernet and FlexRay-critical for modern ADAS diagnostics and time-triggered networking-while the SPC574SADK1AKLQ1 trades ARM Cortex-R4F compatibility and N2HET determinism for Power Architecture tooling and CAN FD readiness, requiring full software re-architecture.

Availability

TMS5703137CZWTQQ1 is available at Aetrix Electronics and suitable for automotive braking systems, electric power steering, and battery management systems requiring stable component supply, long-term lifecycle assurance, and ASIL-D qualification documentation.

Supply support for TMS5703137CZWTQQ1 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 automotive qualification experience.

The TMS570 Hercules™ family was designed specifically for functional safety applications up to ASIL-D, emphasizing lockstep CPU architectures, memory ECC, and comprehensive self-test capabilities for automotive safety-critical control units.

FAQ

What safety certifications does the TMS5703137CZWTQQ1 support?

The TMS5703137CZWTQQ1 is qualified to ISO 26262 ASIL-D at the hardware level and supports full toolchain certification for ASIL-D software development. It includes dual-lockstep CPUs, ECC on all major memory blocks, BIST for CPU and RAM, and ESM-driven error reporting - all documented in TI's Functional Safety Manual for the TMS570LS3137. The TMS5703137CZWTQQ1 meets AEC-Q100 Grade 1 requirements (-40°C to +125°C) and includes diagnostic coverage reports for safety analysis.

Does the TMS5703137CZWTQQ1 include an Ethernet MAC, and what interfaces does it support?

Yes, the TMS5703137CZWTQQ1 integrates a fully featured 10/100 Mbps Ethernet Media Access Controller (EMAC) compliant with IEEE 802.3. It supports MII, RMII, and MDIO interfaces for connection to external PHYs, enabling use in automotive diagnostics, OTA firmware updates, and vehicle-to-infrastructure communication. The EMAC is accessible via dedicated pins in the ZWT package and operates with full DMA support and integrated CRC checking - all confirmed in the TMS5703137CZWTQQ1 technical documentation.

How many ADC channels does the TMS5703137CZWTQQ1 support, and how are they allocated?

The TMS5703137CZWTQQ1 integrates two 12-bit multibuffered ADC modules: ADC1 with 24 dedicated input channels and ADC2 with 16 channels shared with ADC1. Both modules feature 64-word parity-protected result buffers and support grouped sequential conversions triggered by software, timers, or external events. This configuration enables simultaneous sampling of motor currents, battery voltages, and temperature sensors in safety-critical applications like EPS and BMS - directly specified in the TMS5703137CZWTQQ1 datasheet.

What is the role of the N2HET modules in the TMS5703137CZWTQQ1, and how many channels do they provide?

The TMS5703137CZWTQQ1 includes two Next Generation High-End Timer (N2HET) modules: N2HET1 with 32 programmable channels and N2HET2 with 18 channels. These are dedicated hardware coprocessors that offload precise timing tasks - such as PWM generation, input capture, and complex waveform synthesis - from the main CPU. Each N2HET has its own instruction RAM with parity protection and is supported by a dedicated HTU for DMA transfers, ensuring deterministic real-time response in applications like valve control and motor commutation - as detailed in the TMS5703137CZWTQQ1 TRM.

Is the TMS5703137CZWTQQ1 pin-compatible with other devices in the TMS570LS3137 family?

Yes, the TMS5703137CZWTQQ1 shares the same ZWT (337-ball NFBGA) package footprint and pinout with the TMS570LS3137ZWT, differing only in qualification level (automotive Q1 vs. standard) and screening. All signal assignments, power domains, and peripheral mappings match identically - verified in TI's "Terminal Configuration and Functions" section for the ZWT package. This allows drop-in replacement in existing designs targeting extended temperature and AEC-Q100 compliance without PCB revision.